Schneider Electric MicroLogic User Manual

MicroLogic™ 5 and 6 Electronic Trip

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Units—User Guide

Unidades de disparo electrónico MicroLogic™ 5 y 6—Guía de usuario

MC

Déclencheurs électroniques MicroLogic

5

et 6—Guide de l’utilisateur

Instruction Bulletin / Boletín de instrucciones / Directives d’utilisation

48940-312-01 Rev. 05, 01/2020

Retain for future use. / Conservar para uso futuro. / À conserver pour usage ultérieur.

™

MicroLogic™ 5 and 6 Electronic Trip Units—

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User Guide

for PowerPact™ H-, J-, and L-Frame Circuit Breakers Instruction Bulletin

48940-312-01 Rev. 05, 01/2020

Retain for future use.

ENGLISH

™

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide —

DANGER

WARNING

CAUTION

NOTICE

Hazard Categories and Special Symbols

ENGLISH

Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service or maintain it. The following special messages may appear throughout this bulletin or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.

The addition of either symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed.

ANSI

IEC

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, can result in death or serious injury.

CAUTION indicates a hazardous situation which, if not avoided, can result in minor or moderate injury.

NOTICE is used to address practices not related to physical injury. The safety alert symbol is not used with this signal word.

Please Note

FCC Notice

2-EN

NOTE: Provides additional information to clarify or simplify a procedure.

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. This Class A digital apparatus complies with Canadian ICES-003.

Table of Contents MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table of Contents

SECTION 1:GENERAL INFORMATION ........................................................................................................ 7

Introduction ...................................................................................................... 7

In Rating ........................................................................................................... 8

Control Power .................................................................................................. 9

Backlighting ...................................................................................................... 9

Trip Unit Installation ......................................................................................... 9

Trip Unit Sealing ............................................................................................ 10

MicroLogic Trip Unit Layout ........................................................................... 11

Trip Unit Face .......................................................................................... 11

Navigation Principles ..................................................................................... 13

Lock/Unlock the Settings ......................................................................... 13

Trip Unit Modes ....................................................................................... 13

Mode Selection ........................................................................................ 14

Readout Mode ............................................................................................... 14

ENGLISH

Energy Meter Readout (MicroLogic E) ........................................................... 19

Protection Function Readout ................................................................... 22

Neutral Status Readout Mode ................................................................. 22

Setting Mode .................................................................................................. 23

Setting Using a Dial ................................................................................. 23

Setting Using the Keypad ........................................................................ 23

Presetting a Protection Function .............................................................. 27

Setting a Protection Function ................................................................... 28

SECTION 2:ELECTRICAL DISTRIBUTION PROTECTION .................................................................. 29

Protection Functions ...................................................................................... 29

Setting the Protection .............................................................................. 29

Reflex Tripping ......................................................................................... 29

Selective Coordination ................................................................................... 30

Mission Critical Circuit Breakers .................................................................... 30

Long-Time Protection ..................................................................................... 31

Setting the Long-Time Protection ............................................................ 31

Ir Pickup Setting Values ........................................................................... 31

tr Time Delay Setting Values ................................................................... 32

Thermal Image ......................................................................................... 32

Conductor Heat Rise and Tripping Curves .............................................. 33

Thermal Memory ...................................................................................... 33

Short-Time Protection .................................................................................... 33

Setting the Short-Time Protection ............................................................ 34

Isd Pickup Setting Values ........................................................................ 34

tsd Time Delay Setting Values ................................................................. 34

I2t ON/OFF .............................................................................................. 34

Instantaneous Protection ............................................................................... 35

Setting the Instantaneous Protection ....................................................... 35

3-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Table of Contents

Ii Pickup Setting Values ........................................................................... 36

ENGLISH

Ground-Fault Protection ................................................................................. 36

Setting the Ground-Fault Protection ........................................................ 36

Ig Pickup Setting Values .......................................................................... 37

tg Time Delay Setting Values ................................................................... 37

I2t ON/OFF Function ............................................................................... 37

Ground-Fault Protection Test ................................................................... 37

Neutral Protection .......................................................................................... 38

Operation ................................................................................................. 38

Setting the Neutral Protection .................................................................. 39

Neutral Protection Setting Value .............................................................. 39

Selection of the ENCT Option .................................................................. 39

Zone Selective Interlocking (ZSI) ................................................................... 41

Example of ZSI Operation ....................................................................... 41

ZSI Wiring ................................................................................................ 41

ZSI Connection ........................................................................................ 42

Testing the ZSI ........................................................................................ 43

SECTION 3:METERING FUNCTION .......................................................................................................... 44

Real-Time Measurements .............................................................................. 44

Instantaneous Values .............................................................................. 44

Measuring the Neutral Current ................................................................. 44

Measuring the Phase-to-Neutral Voltages ............................................... 44

Calculating the Average Current and Average Voltage ........................... 45

Measuring the Current and Voltage Phase Unbalances .......................... 45

Maximum/Minimum Values ...................................................................... 46

Resetting Maximum/Minimum Values ...................................................... 46

Calculating Demand Values (MicroLogic E) .................................................. 47

Demand Value Models ............................................................................ 47

Metering Window ..................................................................................... 47

Fixed Metering Window .......................................................................... 47

Sliding Metering Window ......................................................................... 48

Synchronized Metering Window .............................................................. 48

Quadratic Demand Value (Thermal Image) ............................................. 48

Arithmetic Demand Value ........................................................................ 48

Peak Demand Value ................................................................................ 48

Resetting Peak Demand Values .............................................................. 49

Power Metering (MicroLogic E) ...................................................................... 49

Principle of Power Metering ..................................................................... 49

Calculation Based on Neutral Conductor ................................................. 50

Distributed Neutral ................................................................................... 50

Power Sign and Operating Quadrant ....................................................... 51

Power Supply ........................................................................................... 51

Power Calculation Algorithm .................................................................... 51

Energy Metering (MicroLogic E) .................................................................... 53

Principle of Energy Calculation ................................................................ 53

Partial Energy Meters .............................................................................. 53

Energy Meters ......................................................................................... 54

Selecting Energy Calculation ................................................................... 54

Resetting Energy Meters ......................................................................... 54

4-EN

Harmonic Currents ......................................................................................... 55

Table of Contents MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Origin and Effects of Harmonics .............................................................. 55

Definition of a Harmonic .......................................................................... 55

RMS Currents and Voltages .................................................................... 56

Acceptable Harmonic Levels ................................................................... 56

Metering Energy Quality Indicators (MicroLogic E) ........................................ 58

Current THD ............................................................................................ 58

Voltage THD ............................................................................................ 59

Distortion Power D ................................................................................... 59

Power Factor PF and Cos φ Measurement (MicroLogic E) ........................... 60

Power Factor PF ...................................................................................... 60

Cos φ ....................................................................................................... 60

Power Factor PF and Cos φ When

Harmonic Currents are Present ............................................................... 60

Sign for the Power Factor PF and Cos φ ................................................. 61

Managing the Power Factor PF and Cos φ:

Minimum and Maximum Values ......................................................................62

Monitoring the Cos φ and Power Factor PF Indicators ............................ 62

Selecting the Sign Convention for the

Cos φ and Power Factor PF .................................................................... 63

Measurements ............................................................................................... 63

Accuracy .................................................................................................. 63

Real-Time Measurements .............................................................................. 64

SECTION 4:ALARMS .......................................................................................................... 68

Alarms Associated with Measurements ......................................................... 68

Alarm Setup ............................................................................................. 68

Alarm Priority Level .................................................................................. 68

Alarm Activation Conditions ..................................................................... 69

Overvalue Condition ................................................................................ 69

Undervalue Condition .............................................................................. 69

Equality Condition .................................................................................... 70

Management of Time Delays (Overvalue or Undervalue Conditions) ..... 70

ENGLISH

Alarms on a Trip, Failure, and Maintenance Event ........................................ 71

Alarm Setup ............................................................................................. 71

Alarm Priority Level .................................................................................. 71

Tables of Alarms ............................................................................................ 72

Operation of SDx Module Outputs Assigned to Alarms ................................. 75

SDx Module Output Operating Modes ..................................................... 75

Acknowledgment of Latching Mode ......................................................... 76

SECTION 5:REMOTE SETTING UTILITY (RSU) SOFTWARE ............................................................ 78

Function Setting ............................................................................................. 78

Using the RSU Software .......................................................................... 78

User Profiles ............................................................................................ 79

Offline Mode ............................................................................................ 79

Online Mode ............................................................................................ 79

Software Configuration Tabs ................................................................... 80

Saving and Printing .................................................................................. 81

Protection Functions ...................................................................................... 81

Setting the Protection Functions .............................................................. 81

5-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Table of Contents

Presetting the Protection Functions by a Dial .......................................... 81

ENGLISH

Metering Setup ............................................................................................... 82

Alarm Setup ................................................................................................... 84

Setting the SDx Module Output Functions ..................................................... 85

SECTION 6:MICROLOGIC TRIP UNIT INDICATORS ............................................................................ 87

LED Indication ................................................................................................ 87

Local Indicator ......................................................................................... 87

Operation of the Ready LED .................................................................... 87

Operation of Pre-Alarm and Alarm LEDs

(Electrical Distribution Protection) ............................................................ 88

Indication on the MicroLogic Display ............................................................. 88

Stacking Screens ..................................................................................... 88

Indication Screens Cause and Response ...................................................... 89

Values According to IEC Convention ....................................................... 91

Setting the Cos φ Alarms According to IEEE Convention ....................... 92

Setting the SDx Outputs .......................................................................... 93

Acknowledging the Out1 Screen ............................................................. 93

SECTION 7:THE COMMUNICATION NETWORK .................................................................................... 94

Circuit Breaker Communication ..................................................................... 94

Remote Readout of the Circuit Breaker Status ........................................ 94

Remote Readout of the Measurements ................................................... 94

Remote Readout of the Operating Assistance Information ...................... 94

Circuit Breaker Remote Control ............................................................... 95

History and Time-Stamped Information ......................................................... 95

History ...................................................................................................... 95

Time-Stamped Information ...................................................................... 95

Maintenance Indicators .................................................................................. 95

BSCM Counters ....................................................................................... 95

MicroLogic Trip Unit Counters ................................................................. 95

6-EN

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

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Section 1— General Information

Introduction

MicroLogic 5 and 6 electronic trip units provide:

• Adjustable tripping functions on electronic trip circuit breakers

• Protection for the electrical distribution system or specific applications

• Metering of instantaneous and demand values

• Kilowatt-hour metering

• Operating information (such as peak demand values, customized alarms, or operation counters)

• Communication

ENGLISH

MicroLogic 5.2 A trip unit

Front faces of MicroLogic trip unit

The product name specifies the protection provided by the trip unit.

MicroLogic 6.2 A-W

Type of Protection

0—Molded case switch (L-frame circuit breaker only) 1—Magnetic only motor circuit protection (L-frame circuit breaker only) 2—Standard motor circuit protection 3—Standard UL protection (LI or LSI), no display 5—Selective protection (LSI), with display 6—Selective protection plus ground-fault protection for equipment (LSIG), with display

Frame Size

2—150/250 A 3—400/600 A

Type of Measurement

A—Provides protection plus ammeter measurements E—Provides protection plus energy measurements S—Provides LSI protection with fixed long time delay and fixed short time delay W—Mission Critical (Selective)

7-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

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MicroLogic trip units can be configured to communicate with other devices. For

ENGLISH

information on the UTA Tester and Modbus™ Interface Module (IFM), see the product catalog and the circuit breaker user guide.

Modbus™ Interface Module (IFM)

UTA Tester

Front Display Module (FDM121)

PowerPact™ H-frame circuit breaker equipped with a MicroLogic trip unit, BSCM, and NSX Cord

For complete information on available circuit breaker models, frame sizes, interrupting ratings, and trip units, see the product catalog.

This manual describes operation of the MicroLogic 5 and 6 trip units.

In Rating

For additional information see the following user guides available on the Schneider Electric™ website:

• Bulletin 48940-310-01: MicroLogic™ 1, 2, and 3 Electronic Trip Units—User

Guide.

• Bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker —User Guide

• Bulletin DOCA0037EN: FDM128—Display For 8 LV Devices—User Guide

To access the website go to:

http://www.schneider-electric.com

For application assistance, please call 1-888-778-2733.

The trip unit In value (A) is visible on the front face of the circuit breaker when the trip unit is installed. The trip unit In rating (in amperes) is the trip unit maximum value.

A

For MCP versions, the Full Load Amp (FLA) range is displayed

Example:

250 A trip unit

• Sensor rating I

8-EN

= 250 A

n

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Control Power

The current through the circuit breaker provides power to operate the MicroLogic trip unit, maintaining protection if the trip unit is not externally powered.

Backlighting

An optional external 24 Vdc power supply for the MicroLogic trip unit is available for:

• Modifying the setting values when the circuit breaker is open

• Displaying measurements when the circuit breaker is closed but current through the circuit breaker is low (15–50 A depending on the rating

• Continuing to display the reason for the trip and the breaking current when the circuit breaker is open

Without the optional external 24 Vdc power supply, the MicroLogic trip unit only functions when the circuit breaker is closed. When the circuit breaker is open or the current through the circuit breaker is low, the MicroLogic trip unit has no power and the display switches off.

The external 24 Vdc power supply is available to the trip unit when it is connected to another module in the ULP system (Modbus Interface Module (IFM), Front Display Module (FDM121), or UTA Tester).

When the MicroLogic trip unit is not connected to a ULP module, it can be connected directly to an external 24 Vdc power supply using the optional 24 Vdc supply terminal block.

When the MicroLogic trip unit is powered by an external 24 Vdc power supply, the trip unit display has white backlighting that is:

ENGLISH

Trip Unit Installation

• Low intensity continuously

• High intensity for 1 minute after pressing one of the keypad buttons

The display backlighting is:

• Deactivated if the temperature exceeds 149°F (65°C)

• Reactivated once the temperature drops back below 140°F (60°C)

On trip units powered by the pocket tester, the display unit is not backlit.

The trip unit is designed for ease of field installation and replacement (for circuit breakers which offer this capability):

• No connections to make

• Installable with a standard Torx T25 driver

• A mechanical cap ensures trip unit compatibility

• Torque limiting screws ensure secure mounting

9-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

ENGLISH

For installation information, see the instruction bulletin shipped with the FieldInstallable Trip Unit (FITU).

NOTE: After installation, the screw heads are accessible so the trip unit can be removed if necessary.

Trip Unit Sealing

The transparent cover on MicroLogic trip units is sealable.

• A sealed cover prevents modification of the protection settings.

• A sealed cover prevents access to the test port.

• The protection settings and measurements can still be read on the keypad.

10-EN

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

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5.2 A

MicroLogic Trip Unit Layout

Trip Unit Face

Use the display screen and keypad on the trip unit to set the trip unit options and check system measurements. See “Navigation Principles” on page 13 for more information.

ENGLISH

A

B

C

D

E

A. Indication LEDs: • shows the trip unit operational state

• vary in meaning depending on the trip unit type.

1. Ready LED (green): Blinks slowly when the electronic trip unit is ready to provide protection.

2. Overload pre-alarm LED (orange): Lights when the load exceeds 90% of the I

3. Overload alarm LED (red): Lights when the load exceeds 105% of the I

1

2

3

B. Test Port

Use the test port for:

— connecting a pocket tester for local testing of the MicroLogic trip unit — connecting the UTA tester for testing, setting the MicroLogic trip unit, and

for installation diagnostics.

C. Dials and Microswitch

A. Indication LEDs B. Test port C. Dials for presetting protection

functions and microswitch for locking

protection setting D. LCD display E. Navigation keypad

setting.

r

setting.

r

A

B

A. Pickup (Ir) preset dial (distribution trip unit only)

Sets the maximum continuous current level of the circuit breaker. If current exceeds this value, circuit breaker trips after the preset time delay.

B. Instantaneous (I

) preset dial (distribution trip unit only)

i

Sets the instantaneous trip pickup value setting for the phases and for the neutral (trip unit with ENCT option and neutral protection active).

C. Microswitch to lock/unlock the protection settings

C

The trip unit face has two dials for presetting protection functions and a microswitch for locking/unlocking the protection settings. For distribution trip units, the dials are for setting long-time and instantaneous protection.

Long-time protection:

• protects equipment against overloads

• is standard on distribution trip units

• uses true rms measurement

Instantaneous protection:

• protects equipment against fault currents

• is standard on distribution trip units

11-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

OK

• has pickup value setting for the phases and for the neutral (trip unit with ENCT

ENGLISH

option and neutral protection active)

• uses true rms measurement

Trip units are shipped with the long-time pickup switch set at the maximum setting and all other trip unit switches set at their lowest settings. All advanced protection settings are turned “off.”

D. LCD display

1. Five pictograms: Metering, Readout, Protection, Setting, Lock. How pictograms are combined defines the mode

2. Up arrow points to protection function currently being set

3. List of protection functions according to the MicroLogic trip unit type

4. Value of the measured quantity

5. Unit of the measured quantity

6. Navigation arrows

7. Down arrow(s) point to the selected phase(s), neutral, or the ground

8. Phases (1/A, 2/B, 3/C), neutral (N) and ground

An LCD display provides information necessary to use the trip unit. The list of protection functions varies according to the MicroLogic trip unit type.

On MicroLogic trip units powered by an external 24 Vdc power supply, the trip unit display has white backlighting that is:

• low intensity continuously

• high intensity for 1 minute after pressing any of the keys on the keypad

• deactivated if the temperature exceeds 149°F (65°C)

• reactivated once the temperature drops back below 140°F (60°C)

NOTE: On trip units powered by the pocket tester, the display unit is not backlit.

E. Navigation keypad Use the 5-button keypad for navigation.

Button Description

Mode

Mode: Selecting the mode

Scroll: Scrolling navigation

Back: Navigation back (metering) or - (setting the protection functions)

Forward: Navigation forward (metering) or + (setting the protection functions)

OK: Confirmation

Screensaver The screensaver displays the instantaneous current passing through the most

heavily loaded phase (Instantaneous measurement readout mode).

The MicroLogic display automatically reverts to a screensaver:

12-EN

• In padlock locked mode, 20 seconds after the last action on the keypad

• In padlock unlocked mode, 5 minutes after the last action on the keypad or dials

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Navigation Principles

Lock/Unlock the Settings

Table 1 – Protection Settings

Display Description

Padlock locked. The protection settings are locked.

Padlock unlocked. The protection settings are unlocked.

The protection settings are locked when the transparent cover is closed and sealed to prevent access to the adjustment dials and the locking/unlocking microswitch.

A pictogram on the display indicates whether the protection settings are locked:

To unlock the protection settings:

1. Open the transparent cover

2. Press the lock/unlock microswitch or turn either adjustment dial

To lock the protection settings, press the lock/unlock microswitch again.

The protection settings also lock automatically five minutes after pressing a button on the keypad or turning one of the dials on the MicroLogic trip unit.

ENGLISH

Trip Unit Modes

Information displays on the MicroLogic trip unit are based on its mode. The modes available depend on:

• Whether the settings are locked

• The trip unit version

A combination of pictograms define the mode:

Metering

Readout

Protection

Setting

Lock

13-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Table 2 – Possible Modes

ENGLISH

Pictograms Mode Accessible

• Instantaneous measurement readout

or

• Kilowatt hour meter readout and reset

Mode Selection

Readout Mode

Max Reset? OK

or

Max Reset? OK

Select mode by successive presses on the button:

Peak demand readout and reset

Protection function readout

Protection function setting

Neutral status readout

Neutral status setting

Mode

• The modes scroll cyclically.

• Press the lock/unlock microswitch to switch between readout mode and setting mode.

NOTE: When the Readout icon is visible, protection settings cannot be altered.

Press the button successively to scroll through the metering screens.

Mode

Scrolling is cyclical.

14-EN

Use the , and navigation buttons to select the metering screen for each of the phases:

The down indication arrow indicates the phase relating to the measurement value displayed.

N 1/A 2/B 3/

Indicating arrows on two phases indicates that phase-to-phase value is being measured:

N 1/A 2/B 3/

Indicating arrows on three phases indicates total power is being measured:

N 1/A 2/B 3/

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Figure 1 – Readout Screen

Up arrow indicates function being measured.

Ir tr Isd tsd Ii (x

A

200

N 1/A 2/B 3/

Possible to press

button

the

Possible to press

button

the

ENGLISH

Use to select measurement readout mode

Use to select phase screen is measuring

Down arrow indicates phase being measured.

Use to select measurement to display

Table 3 – Metering Screens

Trip Unit Mode Order Screen Description Unit Arrows

MicroLogic A (Ammeter)

or

Max Reset? OK

or

Max Reset? OK

Readout as instantaneous rms value of the:

1

• Three phase currents I

2 • Ground-fault current (MicroLogic 6) % I 3 • Neutral current IN (with ENCT option) A

Readout and resetting of the:

4

• Maximum I

currents

• Maximum ground-fault current

5

6

(MicroLogic 6 trip unit)

• Maximum I

(with ENCT option)

i max

max for the neutral current

N

, IB, and IC A

A

for the three phase

The down arrow indicates the conductor (phase, neutral, or ground) corresponding to the value shown.

g

N 1/A 2/B 3/

The down arrow indicates the conductor

A

(phase, neutral, or ground) corresponding to the value shown.

% I

g

N 1/A 2/B 3/

A

Continued on next page

15-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Table 3 – Metering Screens (continued)

ENGLISH

Trip Unit Mode Order Screen Description Unit Arrows

MicroLogic E (Energy)

or

Max Reset? OK

or

Max Reset? OK

Readout as instantaneous rms value of the:

1

• Three phase currents A, B, and C A

• Ground-fault current (MicroLogic 6 trip

2

unit)

3 • Neutral current IN (with ENCT option) A

Readout as instantaneous rms value of the:

• Phase-to-phase voltages V

4

VCA

• Phase-to-neutral voltages V

, VBC, and

AB

, VBN,

AN

and VCN (with ENVT option)

5 Readout of the total active power P

Readout of the total apparent power S

6

the three phase conductors.

7 Readout of the total reactive power Q

Readout and resetting of the active energy

8

meter E

Readout and resetting of the apparent

9

energy meter E

Readout and resetting of the reactive

10

energy meter E

p

s

q

kW

tot

in

tot

kvar

tot

The down arrow indicates the conductor (phase, neutral, or ground) corresponding to the value shown.

% I

g

N 1/A 2/B 3/

The down arrow indicates the conductor (phase, neutral, or ground) corresponding

V

to the value shown.

N 1/A 2/B 3/

kVA

kWh,

MWh kVAh, MVAh kvarh, Mvarh

or

Max Reset? OK

or

Max Reset? OK

11 Readout of the phase rotation —

Readout and resetting of the:

12

• Maximum I

• Maximum ground-fault current

13

14

(MicroLogic 6 trip unit)

• Maximum I

(with ENCT option)

for the 3 phase currents

i max

for the neutral current

N max

% I

Readout and resetting of the:

• Maximum V

15

• Maximum V

phase voltages

for the three phase-to-

ij max

for the three phase-

iN max

to-neutral voltages (with ENVT option)

Readout and resetting of the maximum

16

P

of the active power

max

Readout and resetting of the maximum

17

S

of the apparent power kVA

max

Readout and resetting of the maximum

18

of the reactive power kvar

Q

max

kW

kVA

kvar

A

The down arrow indicates the conductor (phase, neutral, or ground) corresponding to the value shown.

g

N 1/A 2/B 3/

A

The down arrows indicate the phases between which the maximum V

V

N was measured.

N 1/A 2/B 3/

The down arrows indicate the three phase conductors.

N 1/A 2/B 3/

Continued on next page

L-L or L-

max

16-EN

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 3 – Metering Screens (continued)

Trip Unit Mode Order Screen Description Unit Arrows

MicroLogic 5 LSI: Protection Function Readout Screens

I

—Long-time protection pickup value for

r

1

the phases

)—Long-time protection pickup value

I

r(IN

for the neutral (trip unit with ENCT option

2

and neutral protection active)

—Long-time protection time delay value

t

r

4

5

6

)

(at 6 I

r

—Short-time protection pickup value for

I

sd

the phases

) —Short-time protection pickup value

I

sd(IN

for the neutral (trip unit with ENCT option and neutral protection active)

—Short-time protection time delay value

t

sd

The time delay is for the I2t inverse time curve protection:

7

• ON: I

• OFF: I

I setting for the phases and for the neutral

8

(trip unit with ENCT option and neutral

2

t function active

2

t function not active

—Instantaneous protection pickup value

i

protection active).

Neutral status (with ENCT option):

9

• N—Neutral protection active

• noN—Neutral protection not active

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrow indicates the neutral.

N 1/A 2/B 3/

The up arrow indicates the t

s

Ir tr Isd tsd Ii (x In)

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrow indicates the neutral.

N 1/A 2/B 3/

The up arrow indicates the t

s

Ir tr Isd tsd Ii (x In)

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

— —

Continued on next page

function.

r

function.

r

function.

r

function.

sd

function.

sd

function.

sd

function.

i

ENGLISH

17-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Table 3 – Metering Screens (continued)

ENGLISH

Trip Unit Mode Order Screen Description Unit Arrows

function.

r

function.

r

function.

r

sd

function.

g

MicroLogic 6 LSIG: Protection Function Readout Screens

I

—Long-time protection pickup value for

r

1

the phases

I

)—Long-time protection pickup value

r(IN

2

for the neutral (trip unit with ENCT option and neutral protection active)

t

—Long-time protection time delay value

r

4

5

6

)

(at 6 I

r

I

—Short-time protection pickup value for

sd

the phases

)—Short-time protection pickup value

I

sd(IN

for the neutral (trip unit with ENCT option and neutral protection active)

—Short-time protection time delay value

t

sd

The time delay is for the I curve protection:

7

• ON: I

• OFF: I

I setting for the phases and for the neutral

8

(trip unit with ENCT option and neutral

2

t function active

2

t function not active

—Instantaneous protection pickup value

i

2

t inverse time

protection active).

9 I

—Ground-fault protection pickup value A A

g

The up arrow indicates the I

Ir tr Isd tsd Ii Ig tg

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the I

Ir tr Isd tsd Ii Ig tg

A

The down arrow indicates the neutral.

N 1/A 2/B 3/

The up arrow indicates the t

s

Ir tr Isd tsd Ii Ig tg

The up arrow indicates the I

Ir tr Isd tsd Ii Ig tg

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the I

Ir tr Isd tsd Ii Ig tg

A

The down arrow indicates the neutral.

N 1/A 2/B 3/

The up arrow indicates the t

s

Ir tr Isd tsd Ii Ig tg

The up arrow indicates the Ii function.

Ir tr Isd tsd Ii Ig tg

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the I

Ir tr Isd tsd Ii Ig tg

The down arrows indicate the three phases.

function.

18-EN

N 1/A 2/B 3/

t

—Ground-fault protection time delay

g

value The time delay is for the I

10

curve protection:

• ON: I

• OFF: I

2

t function active

2

t function not active

2

t inverse time

The up arrow indicates the t

s

Ir tr Isd tsd Ii Ig tg

function.

g

Neutral status (with ENCT option):

11

• N—Neutral protection active

• noN —Neutral protection not active

— —

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Energy Meter Readout (MicroLogic E)

Energy meters change measurement unit automatically:

• For active energy, E

, displayed in kWh from 0 to 9999 kWh then in MWh

p

• For reactive energy, Eq, displayed in kvarh from 0 to 9999 kvarh then in Mvarh

• For apparent energy, E

, displayed in kVAh from 0 to 9999 kVAh then in MVAh

s

When energies are in MWh, Mkvarh, or MVAh, the values display on four digits. The MicroLogic trip unit incorporates the option of full energy meter readout.

NOTE: The energy meter can be reset with the padlock locked or unlocked. Table 4 shows the padlock locked.

Table 4 – Example of Full Energy Readout (MicroLogic E)

Step Readout Value Action Using Display

Reading Full Energy Values

Ir tr Isd tsd Ii (x In)

1

2

Current in most heavily loaded phase

Energy with Reset option showing

Select the readout and reset the energy meter mode (main screen displayed).

Select the E The value displayed is 11.3 MWh (in the

example), which corresponds to 10 MWh +1300 kWh (approximately).

active energy meter.

p

Mode

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

Reset? OK

229

11.3

ENGLISH

A

MWh

3

4

Specific energy measurement

Energy normal display

Specify the measurement. The value displayed is 1130 kW. (In the example

the full energy meter value is 11300 kWh)

Return to the energy meter normal display. The display reverts automatically after 5

minutes.

Ir tr Isd tsd Ii (x In)

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In

Reset? OK

N 1/A 2/B 3/

1130

11.3

Continued on next page

kWh

19-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Mode

Table 4 – Example of Full Energy Readout (MicroLogic E) (continued)

ENGLISH

Resetting Full Energy Readout

Ir tr Isd tsd Ii (x In)

Current in most

1

heavily loaded phase

Energy with

2

Reset option showing

3 Reset option lit

4 OK

Select the measurement readout and reset energy meter mode (main screen displayed).

Select the energy meter to reset.

Enter the reset. The OK pictogram blinks.

Confirm the reset. The confirmation OK displays for 2 seconds.

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

OK

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

229

1458

A

kWh

OK

Resetting Peak Demand Values

1 Main screen

Peak demand

2

with Reset option showing

3 Reset option lit

4 OK

Select the Readout and reset peak demand value mode

Select the peak demand to reset.

Enter the reset. The OK pictogram blinks.

Confirm the reset. The confirmation OK display for 2 seconds.

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

OK

Max Reset?

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

Max Reset?

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

243

435

A

V

OK

20-EN

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

OK

Table 5 – Example of Ground-Fault Protection Readout (MicroLogic 6)

Step Readout Value Action Using Display

Reading Measurement Values

Current in most

1

heavily loaded phase

2 Ground-fault current

Select the Instantaneous measurement readout mode (the display is the most heavily loaded phase, in this example Phase B).

Read the value of current in Phase B.

Select the ground-fault current measurement screen (the value is a % of the I

Ground-Fault Protection Test (MicroLogic 6)

setting).

g

Mode

Ir tr Isd tsd Ii Ig tg

N 1/A 2/B 3/

Ir tr Isd tsd Ii Ig tg

OK

N 1/A 2/B 3/

A

229

%

17

ENGLISH

Current in most

1

heavily loaded phase

Peak demand with

2

Reset option showing

3 Reset option lit

4 OK

Access the ground-fault protection test function by pressing OK.

The tESt pictogram appears and the OK pictogram blinks.

Prompt the ground-fault protection test by pressing OK.

The circuit breaker trips. The ground-fault protection trip screen is displayed.

Acknowledge the ground-fault trip screen by pressing OK.

The Reset OK pictogram blinks.

Confirm by pressing OK again The confirmation OK displays for 2 seconds.

Mode

Ir tr Isd tsd Ii Ig tg

OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii Ig tg

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii Ig tg

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii Ig tg

N 1/A 2/B 3/

tESt

triP

OK

21-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Mode

Protection Function Readout

ENGLISH

Select a protection function using the mode key. This selection is only possible in Readout mode (when the padlock is locked).

• Scrolling is cyclical.

• The up arrow indicates the selected protection function. (For the neutral protection functions, the down arrow which points to N replaces the up arrow.)

Example: I

Ir tr Isd tsd Ii (x In)

pickup selected

r

Table 6 – Example of Protection Function Readout

Readout

Step

1

2

3

Value

Long-time protection I pickup setting value in amperes.

Long-time protection t time delay setting value in seconds.

The short-time protection I pickup setting value in amperes.

Action Using Display

Select the Protection function readout mode

r

(main screen displayed). The long-time protection I

in amperes.

r

Select the long-time protection tr time delay.

sd

Select the short-time protection I

pickup setting value

r

pickup

sd

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

110

A

s

8.0

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

A

715

N 1/A 2/B 3/

Neutral Status Readout Mode

NOTE: The Neutral status readout mode is dedicated to this function. Navigation is

therefore limited to the Mode key.

Table 7 – Example of Neutral Status Readout

Readout

Step

1

22-EN

Value

Neutral status is displayed

Action Using Display

Select the Neutral status readout mode. The neutral status value is displayed:

• N—Neutral protection active (with ENCT

option declared)

• noN—Neutral protection not active (without

ENCT option or with ENCT option not declared)

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

noN

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

CAUTION

Setting Mode

Setting Using a Dial

Figure 2 – Protection

Switches

150

175

125

100

A

80

70

3

B

2

1.5

Ir (A)

4

Ii (x In)

200

5.2 A

225

250

5

6

8 10

12

Micrologic

HAZARD OF NO PROTECTION OR NUISANCE TRIPPING

Modifying the protection functions must be done only by qualified electrical personnel.

Failure to follow these instructions can result in injury or equipment damage.

The protection function settings can be set:

• By a dial and fine-tuned on the keypad for the main protection functions

• On the keypad for all protection functions

The up arrow on the display indicates the protection function currently being set.

Use a dial to set (or preset) the Ir (A) and Ii (B) pickups.

Turning a dial results simultaneously in:

• Selection of the screen for the protection function assigned to the dial

• Unlocking (if necessary) the padlock (the navigation interface is in protection function setting mode)

• Setting the protection function assigned to the dial to the value indicated on the dial and on-screen.

ENGLISH

Setting Using the Keypad

Use the keypad to fine-tune the protection function.

• The setting value cannot exceed that indicated by the dial.

• All the protection function settings are accessible on the keypad.

Press the button successively to scroll through the protection function

Mode

screens. Scrolling is cyclical.

Navigate through the protection function settings with the , and navigation buttons.

• Use the button to select the function to set:

— The up arrow indicates the selected function — The down arrow indicates phase. Multiple down arrows indicate all phases

set to the same value (except for the neutral protection setting)

— Scrolling is cyclical

• Set the protection functions on the keypad with the and buttons.

23-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Figure 3 – Protection Function Screen

ENGLISH

Up arrow indicates selected function.

Ir tr Isd tsd Ii (x

200

N 1/A 2/B 3/

A

Possible to press

button

the

Possible to press

button

the

Confirmation of Setting

Use to select protection function screen

Use to select function to set

Down arrow indicates phase.

Use to select measurement to display

The value of a protection function set on the keypad must be:

1. Entered by pressing the OK key once (the OK pictogram blinks on the display)

2. Then confirmed by pressing the OK key again (the text OK displays for 2 seconds)

NOTE: Setting using a dial does not require any enter/confirm action.

24-EN

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 8 – List of Protection Function Setting Screens

Trip Unit Mode Screen Description Unit Arrows

I

—Long-time protection pickup setting for the

r

phases Preset by a dial

—Long-time protection time delay setting (at 6 Ir) s

t

r

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the t

Ir tr Isd tsd Ii (x In)

function.

r

function.

r

ENGLISH

MicroLogic 5 LSI

—Short-time protection pickup setting for the

I

sd

phases Preset by a dial

—Short-time protection time delay setting

t

sd

Activation of the I2t inverse time curve short-time protection:

2

• ON: I

• OFF: I

I

N

t function active

2

t function not active

—Protection pickup setting for the neutral (trip unit with ENCT option and neutral protection active)

—Instantaneous protection pickup value setting

I

i

for the phases and for the neutral (trip unit with ENCT option and neutral protection active).

Activation of neutral status (trip unit with ENCT option):

• N: Neutral protection active

• noN: Neutral protection not active

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the t

s

Ir tr Isd tsd Ii (x In)

The down arrow indicates the neutral.

A

N 1/A 2/B 3/

The up arrow indicates the I

Ir tr Isd tsd Ii (x In)

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

— —

Continued on next page

function.

sd

function.

sd

function.

i

25-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Table 8 – List of Protection Function Setting Screens (continued)

ENGLISH

Trip Unit Mode Screen Description Unit Arrows

The up arrow indicates the I

—Long-time protection pickup setting for the

I

r

phases Preset by a dial

t—Long-time protection time delay setting s

Ir tr Isd tsd Ii Ig tg

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the t

Ir tr Isd tsd Ii Ig tg

function.

r

function.

r

MicroLogic 6 LSIG:

I

—Short-time protection pickup setting for the

sd

phases

—Short-time protection time delay setting

t

sd

The time delay is for the I

2

t inverse time curve

protection:

2

• ON: I

• OFF: I

I

N

t function active

2

t function not active

—Protection pickup setting for the neutral (trip unit with ENCT option and neutral protection active)

—Instantaneous protection pickup setting for the

I

i

phases and for the neutral (trip unit with ENCT option and neutral protection active).

I—Ground-fault protection pickup setting Preset by a dial

The up arrow indicates the I

Ir tr Isd tsd Ii Ig tg

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the t

s

Ir tr Isd tsd Ii Ig tg

The down arrow indicates the neutral.

A

N 1/A 2/B 3/

The up arrow indicates the I

Ir tr Isd tsd Ii Ig tg

A

The down arrows indicate the three phases.

N 1/A 2/B 3/

The up arrow indicates the Ig function.

Ir tr Isd tsd Ii Ig tg

A

The down arrows indicate the three phases.

function.

sd

function.

sd

function.

i

26-EN

N 1/A 2/B 3/

t

—Ground-fault protection time delay setting

g

The time delay is for the I2t inverse time curve protection:

2

• ON: I

• OFF: I

t function active

2

t function not active

The up arrow indicates the t

s

Ir tr Isd tsd Ii Ig tg

function.

g

Activation of neutral status (trip unit with ENCT option):

• N—Neutral protection active

• noN—Neutral protection not active

— —

Section 1—General Information MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Presetting a Protection Function

Table 9 illustrates presetting and setting the long-time protection Ir pickup on a MicroLogic trip unit 5.2 rated 250 A:

Press the button to scroll through the metering screens.

Mode

Press the , and navigation buttons to select the metering screen for each of the phases:

Table 9 – Example of Presetting a Protection Function Using a Dial

Step Action Using Display

Set the Ir dial to the maximum value (the padlock unlocks

1

2

4

automatically). The down arrows indicate all 3 phases (the setting is identical

on each phase).

Turn the I Presetting is complete:

• If the pickup setting value is correct (in this case, 175 A), exit

• If the pickup setting value is not suitable, fine-tune it on the

Set the exact value required for I (in increments of 1 A).

dial to the setting above the value required.

r

the setting procedure (no enter keystroke is required).

keypad.

on the keypad

r

16

17

14

10

14

10

Ir (A)

16

Ir (A)

25

17

25

20 22

12

11

12

11

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

OK

ENGLISH

A

250

A

175

A

170

Ir tr Isd tsd Ii (x In)

5

6

Enter the reset. The OK pictogram blinks.

Confirm the reset. The confirmation OK displays for 2 seconds.

OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

170

A

OK

27-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 1—General Information

Mode

Setting a Protection Function

ENGLISH

Table 10 illustrates setting the long-time protection tr time delay on a MicroLogic

5.2 trip unit:

Press the button to scroll through the screens.

Mode

Press the , and navigation buttons to select the screen for each of the phases:

Table 10 – Example of Setting a Protection Function Using the Keypad

Step Action Using Display

Ir tr Isd tsd Ii Ig tg

1

2 Select the protection function setting mode.

3 Select the t

If the locked pictogram is displayed, unlock the protection settings.

function: the up arrow moves under tr.

r

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

A

229

A

170

s

0.5

4 Set the t

5 Enter the setting (the OK pictogram blinks).

6

Confirm the setting. The confirmation OK displays for 2 seconds.

value required on the keypad.

r

Ir tr Isd tsd Ii (x In)

s

OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii (x In)

N 1/A 2/B 3/

8.0

s

8.0

OK

28-EN

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

1

5

4

3

2

7

6

10

9

8

In=400A

Section 2— Electrical Distribution Protection

MicroLogic 5 and 6 trip units provide protection against overcurrents and groundfault currents for commercial or industrial applications.

When choosing the protection characteristics to use, take account of:

• Overcurrents (overloads and short-circuits) and potential ground-fault currents

• Conductors than need protection

• The presence of harmonic currents

• Coordination between the devices

• Mission Critical trip units with enhanced selectivity have a “W” in the trip unit number (for example, 3.2W or 3.2S-W)

Protection Functions

Functions are reviewed in detail on the following pages.

Table 11 – Protective Functions Trip Curve

Protective Functions Trip Curve No Function Description

1 I

n

2 I

r

3 t

r

4 I

sd

5 t

sd 2

6 I

t ON/OFF Short-time protection I2t curve in ON or OFF position A A

7 I

i

8 I

g

9 t

g

2

10 I

t ON/OFF

Sensor rating N N Long-time protection pickup A A Long-time protection time delay A A Short-time protection pickup A A Short-time protection time delay A A

Instantaneous protection pickup A A Ground-fault protection pickup — A Ground-fault protection time delay — A Ground-fault protection I2t curve in ON or OFF

position

ENGLISH

MicroLogic Trip Unit

5 6

— A

A = Adjustable N = Not Adjustable — = Not Available

Setting the Protection

Reflex Tripping

To set the protection functions:

• On the MicroLogic trip unit, use the preset dials (depending on the protection function and the MicroLogic type) and the keypad.

• With the communication option, use the RSU software under the Basic protection tab.

For more information about using the RSU software to set the protection function, see “Setting the Protection Functions” on page 81.

In addition to the devices integrated in the MicroLogic trip units, the PowerPact™ Lframe circuit breakers have reflex protection. This system breaks very high fault currents by mechanically tripping the device with a “piston” actuated directly by the pressure produced in the circuit breaker from a short circuit. This piston operates the opening mechanism, resulting in ultra-fast circuit breaker tripping.

29-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 2—Electrical Distribution Protection

Selective Coordination

ENGLISH

Figure 4 – Coordination Trip Curves

Q

2

1

Q

1

Q

2

Selective coordination between the upstream and downstream devices is essential to optimize continuity of service. The large number of options for setting the protection functions on MicroLogic 5 and 6 trip units improves the natural coordination between circuit breakers.

Schneider Electric provides trip curves for each circuit breaker and tables showing UL Listed series-rated circuit breakers. Trip curves can be found on our website:

http://www.schneider-electric.us

In the search box, type “PowerPact H, J, L”. Click on “PowerPact H/J/L Frame Molded Case Circuit Breakers”, then click on the “Documents and Downloads” tab. The user guides and trip curves are found within this tab.

For assistance, please call 1-888-778-2733.

Mission Critical Circuit Breakers

The PowerPact J- and L-Frame Mission Critical circuit breakers deliver high levels of selective coordination with the QO™ family of miniature circuit breakers and the ED, EG, and EJ circuit breakers in a flexible design that can be easily configured for a variety of applications. These circuit breaker can be equipped with 5.2A-W,

5.2E-W, 6.2A-W, 5.3A-W, 6.3A-2, and 6.3E-2 MicroLogic trip units.

The mission critical trip units have the same settings and trip curves as the standard trip units as described in this document.

For more information see catalog 0611CT1001 PowerPact H-, J-, and L-Frame Circuit Breakers on the Schneider Electric website.

30-EN

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Tripping curve:

In

I

r

t

r

In=250A

t

r

I

r

6 I

r

Long-Time Protection

Figure 5 – Long-Time Protection Curve

In = Trip unit setting range: Minimum setting/maximum setting - trip unit

rating

I

n

Ir = Long-time protection pickup

= Long-time protection time delay

t

r

Long-time protection on MicroLogic 5 and 6 trip units protect electrical distribution applications against overload currents. It is identical for MicroLogic 5 and 6 trip units.

2

Long-time protection is I

t IDMT (Inverse Definite Minimum Time):

ENGLISH

• It incorporates the thermal image function.

• It is set with the I

Setting the Long-Time Protection

Set the Ir pickup:

• Using the MicroLogic trip unit I tune the value

• With the communication option, preset using the I unit and fine-tune the setting using the RSU software

Set the time delay t

• Using the keypad on the MicroLogic trip unit

• With the communication option, set using the RSU software

Ir Pickup Setting Values

The long-time protection tripping range is 1.05–1.20 Ir.

The default Ir pickup setting value is the maximum dial position In.

Use the keypad to fine-tune the setting, in increments of 1 A:

• The setting range maximum is the preset value of the dial.

• The range minimum is the minimum preset value (for the 400 A rating, the setting range minimum is 125 A).

Example:

A MicroLogic 5.2 trip unit rated I

• The minimum preset value is 70 A

• The keypad fine-tuning range is 70–150 A

pickup and the tr trip time delay.

r

dial to preset the value and the keypad to fine-

r

:

r

= 250 A is preset using the dial at 150 A:

n

dial on the MicroLogic trip

r

31-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 2—Electrical Distribution Protection

2

5

3

2

5

A

B

11

4

The setting value displayed is the value of the trip time delay for a current of 6 Ir.

ENGLISH

Table 12 – Preset Values of I

(A)

r

In Rating

60 A 15 A 20 A 25 A 30 A 35 A 40 A 45 A 50 A 60 A 100 A 35 A 40 A 45 A 50 A 60 A 70 A 80 A 90 A 100 A 150 A 50 A 60 A 70 A 80 A 90 A 100 A 110 A 125 A 150 A 250 A 70 A 80 A 100 A 125 A 150 A 175 A 200 A 225 A 250 A 400 A 125 A 150 A 175 A 200 A 225 A 250 A 300 A 350 A 400 A 600 A 200 A 225 A 250 A 300 A 350 A 400 A 450A 500 A 600 A

tr Time Delay Setting Values

The default tr time delay setting value is 0.5 (minimum value) that is, 0.5 seconds at 6 I

Table 13 shows the value of the trip time delay (in seconds) according to the current in the load for the setting values displayed on-screen.

The accuracy range is -20%/+0%.

Table 13 – Preset Values of tr (seconds)

Current in the Load

1.5 t 6 t

7.2 t

Preset Values of I

Depending on the Trip Unit In Rating and the Dial

r

Position

.

r

Setting Value

0.5 1 2 4 8 16

t

Trip Time Delay

r

15 s 25 s 50 s 100 s 200 s 400 s

0.5 s 1 s 2 s 4 s 8 s 16 s

0.35 s 0.7 s 1.4 s 2.8 s 5.5 s 11 s

Thermal Image

The trip unit uses the calculation of a thermal image to evaluate the conductor heat rise and precisely monitor the thermal state of the conductors.

Example:

Comparison of the heat rise calculation without thermal image (diagram A) and with thermal image (diagram B):

• Trip unit without thermal image: On each current pulse, the trip unit only considers the thermal effect on the pulse under consideration. No tripping occurs despite the build-up in conductor heat rise.

• Trip unit with thermal image: The trip unit adds the thermal effect of successive current pulses. Tripping occurs based on the actual thermal state of the conductor.

Figure 6 – Conductor Heat Rise Diagrams

32-EN

Diagram A

Diagram B

1. Instantaneous current (cyclical) in the load

2. Conductor temperature

3. Current calculated without thermal image (diagram A)

4. Current calculated with thermal image (diagram B)

5. Long-time protection pickup: I

r

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

I

r

t

sd

I

sd

t

sd

I

sd

Conductor Heat Rise and Tripping Curves

Figure 7 – Heat Rise Curve

A. Heat rise curve for an equilibrium temperature B. Trip curve or the limit temperature

1. Low intensity current zone

2. Low overcurrent zone

Use the analysis of the equation of heat rise in a conductor, through which a current I runs, to determine the nature of physical phenomena:

ENGLISH

Thermal Memory

Short-Time Protection

• For low- or medium-intensity currents (I < I

), the conductor equilibrium

r

temperature (for an infinite time) only depends on the current quadratic demand value, see “Quadratic Demand Value (Thermal Image)” on page 48. The limit temperature corresponds to a limit current (I

pickup for trip unit long-

r

time protection).

• For low overcurrents (I

< I < Isd), the conductor temperature only depends on

r

the I2t energy provided by the current. The limit temperature is an I2t IDMT curve.

• For high overcurrents (I > I

), the phenomenon is identical if the I2t ON

sd

function of the short-time protection has been configured, see “I2t ON/OFF Function” on page 37.

MicroLogic 5 and 6 trip units incorporate the thermal memory function which ensures that the conductors are cooled even after tripping. Cooling lasts for 20 minutes before or after tripping.

Figure 8 – Short-Time Protection Tripping Curve

Ir = Long-time protection pickup

= Short-time protection pickup

I

sd

= Short-time protection time delay

t

sd

I2t = Inverse time curve function (ON or OFF)

Short-time protection on MicroLogic 5 and 6 trip units protects all types of electrical distribution applications against short-circuit currents.

33-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 2—Electrical Distribution Protection

It is identical for MicroLogic 5 and 6 trip units.

ENGLISH

Short-time protection is definite time:

• It incorporates the possibility of an I

• It is set using the I

pickup and the tsd trip time delay

sd

2

t inverse time curve function

Setting the Short-Time Protection

Set the Isd pickup:

• Using the keypad on the MicroLogic trip unit.

• With the communication option, set using the RSU software.

Set the t

• Using the keypad on the MicroLogic trip unit.

• With the communication option, set using the RSU software.

The t

Isd Pickup Setting Values

The Isd pickup setting value is in multiples of Ir.

The default Isd pickup setting value is 1.5 Ir (minimum dial value).

Table 14 shows the setting values (preset by a dial) and setting ranges (set on the keypad) of the I

Table 14 – Preset Values of I

Type of Setting Value or Setting Range (x Ir)

Preset by a dial (MicroLogic 5)

Setting range on the keypad Increment: 0.5 I

1

The accuracy range is +/- 10%.

2

For MicroLogic 6 trip units, the setting range value on the keypad is: 1.5–10 Ir.

tsd Time Delay Setting Values

time delay:

sd

time delay setting includes activation/deactivation of the I2t option.

sd

pickup.

sd

(A)

sd

1

1.5 2 3 4 5 6 8 10 12

1

r

1.5 1.5–2 1.5–3 1.5–4 1.5–5 1.5–6 1.5–8 1.5–10 1.5–12

I2t ON/OFF

34-EN

Table 15 indicates the setting values for the tsd time delay with the I2t OFF/ON option in seconds (s) and the associated hold and breaking times in milliseconds (ms).

The default t

time delay setting value is 0 seconds with I2t OFF.

sd

Table 15 – Preset Values of tsd

Function Setting Value

tsd with I2t OFF 0 0.1 s 0.2 s 0.3 s 0.4 s t

with I2t ON — 0.1 s 0.2 s 0.3 s 0.4 s

sd

Hold Time 20 ms 80 ms 140 ms 230 ms 350 ms Maximum Breaking Time 80 ms 140 ms 200 ms 320 ms 500 ms

Use the I2t inverse time curve function to improve circuit breaker coordination. Use it when a protection device using inverse time only is installed downstream, for example a fuse protection device.

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

I2t OFF I

2

t ON

t(s)

RK5-200 A

L-Frame Circuit Breaker MicroLogic 5.3 A - 600 A

I (A)

t(s)

RK5-200 A

I (A)

L-Frame Circuit Breaker MicroLogic 5.3 A - 600 A

The curves illustrate an example of selective coordination between a PowerPact™ L-frame circuit breaker upstream, and a RK5-200 A fuse downstream.

2

Use the I

t ON function on the short-time protection to provide coordination.

Figure 9 – Example of Coordination

Instantaneous Protection

Figure 10 – Instantaneous Protection Curve

ENGLISH

Setting the Instantaneous Protection

I

In=250A

n

In = Trip unit setting range: Maximum setting = trip unit In rating

= Instantaneous protection pickup

I

i

I

i

I

i

Instantaneous protection on MicroLogic 5 and 6 trip units protects all types of electrical distribution applications against very high short-circuit currents.

It is identical for MicroLogic 5 and 6 trip units.

Instantaneous protection is definite time, set as I

pickup and without a time delay.

i

Set the Ii pickup:

• Using the MicroLogic trip unit Ii dial to preset the value and the keypad to finetune the value

• With the communication option, preset using the I unit and fine-tune setting using the RSU software

dial on the MicroLogic trip

i

35-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 2—Electrical Distribution Protection

In

t

g

I

g

2

I t

70/250A

I

g

t

g

Ii Pickup Setting Values

ENGLISH

The Ii pickup setting value is in multiples of In.

The default Ii pickup setting value is 1.5 In (minimum value).

Table 16 shows the setting ranges and increments according to the MicroLogic trip

rating.

unit I

n

• The accuracy range is +/- 10%.

• The hold time is 10 milliseconds.

• The maximum breaking time is 50 milliseconds.

Table 16 – Preset Values of I

In Rating Setting Range Increment

60, 100 A and 150 A 1.5–15 I 250 A and 400 A 1.5–12 I 600 A 1.5–11 I

i

n

0.5 I

n

Ground-Fault Protection

Figure 11 – Ground-Fault Protection Tripping Curve

Ground-fault protection on MicroLogic 6 trip units protects all types of electrical distribution applications against ground-fault currents.

For more details on ground-fault currents, see the bulletin shipped with the circuit breaker

Ground-fault protection is definite time:

• It includes the possibility of an I

• Set as Ig pickup and as tg trip time delay.

Setting the Ground-Fault Protection

Set the Ig pickup:

In = Trip unit setting range: Minimum setting/maximum setting = trip unit In rating Ig = Ground-fault protection pickup

= Ground-fault protection time delay

t

g

2

t = Ground-fault protection I2t curve in ON or OFF position

I

2

t inverse time curve function

• Using the keypad on the MicroLogic trip unit.

• With the communication option, set using the RSU software.

36-EN

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Set the tg time delay:

• Using the keypad on the MicroLogic trip unit.

• With the communication option, set using the RSU software.

time delay setting incorporates activation/deactivation of the I2t option.

The t

g

Ig Pickup Setting Values

The Ig pickup setting value is in multiples of In.

ENGLISH

The default I

• 0.30 In for trip units rated 60 A

• 0.20 I

Table 17 specifies the setting ranges. The increment is 0.05 In.

Table 17 – I

In = Ig Pickup Setting Values (x In)

60 A 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 100–600 A 0.2 2.5 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1

1

tg Time Delay Setting Values

The tg time delay setting value is in seconds. The hold and breaking times are in milliseconds.

The default t

Table 18 shows t hold and breaking times.

Table 18 – Preset Values of t

Function Setting Value

pickup setting value is the same as the minimum value read on the dial:

g

for trip units rated > 60 A

n

Pickup Setting Values

g

The accuracy range is +/- 10%.

time delay setting value is 0 s with I2t OFF.

g

setting values with the I2t OFF/ON option and the associated

g

1

g

tg with I2t OFF 0 s 0.1 s 0.2 s 0.3 s 0.4 s

with I2t ON — 0.1 s 0.2 s 0.3 s 0.4 s

t

g

Hold time 20 ms 80 ms 140 ms 230 ms 350 ms

Maximum breaking time 80 ms 140 ms 200 ms 320 ms 500 ms

I2t ON/OFF Function

Operation of the I2t ON/OFF ground-fault protection is similar to that of the shorttime I2t function (see “Short-Time Protection” on page 33).

Ground-Fault Protection Test

Perform the ground-fault protection test on the keypad of the MicroLogic trip unit (see “Ground-Fault Protection Test (MicroLogic 6)” on page 21). Use this test to check the trip unit’s electronic tripping function.

37-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 2—Electrical Distribution Protection

Neutral Protection

ENGLISH

Table 19 – Possible Neutral Protection Types

Circuit Breaker Possible Types Neutral Protection

Circuit breaker 3P, 3D None

3P, 3D None

Circuit breaker with ENCT option

P: Pole; D: Trip unit; N: Neutral protection

3P, 3D + N/2 Half neutral 3P, 3D + N Full neutral 3P, 3D + OSN Oversized neutral

Neutral protection on MicroLogic 5 and 6 trip units protects all types of electrical distribution applications against overload and short-circuit currents.

It is available on trip units with ENCT option

It is identical for MicroLogic 5 and 6 trip units.

Normally, the phase protection protects the neutral conductor (if it is distributed and identical to the phases in size, that is, full neutral).

The neutral must have specific protection if:

• It is reduced in size compared to the phases

• Nonlinear loads generating third order harmonics (or multiples thereof) are installed

Operation

It may be necessary to switch off the neutral for operational reasons (multiple source diagram) or safety reasons (working with power off).

To summarize, the neutral conductor can be:

• Non-distributed

• Distributed, not switched off, and not protected

• Distributed, not switched off but protected (circuit breaker with ENCT option)

Figure 12 – Neutral Protection Tripping Curve

I

In=250A

n

In = Trip unit setting range: The maximum

I

r

setting corresponds to the trip unit I

I

i

Ir = long-time protection pickup

= Neutral protection time delay

I

i

rating

n

38-EN

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Neutral protection has the same characteristics as phase protection:

• Its pickup is in proportion with the long-time I

• It has the same trip time delay values as the long-time Ir and short-time Isd protections.

• Its instantaneous protection is identical.

Setting the Neutral Protection

Set the trip unit Neutral status and the IN pickup:

• Using the keypad on the MicroLogic trip unit

• With the communication option, set using the RSU software

Neutral Protection Setting Value

MicroLogic 5 and 6 trip units incorporate the OSN (Oversized Neutral) function, which manages protection of the neutral conductor when third-order harmonic currents (and multiples thereof) are present (see “Harmonic Currents” on page 55).

Table 20 shows, according to the value of the I the neutral long-time protection and neutral short-time protection pickups:

Table 20 – Values of Neutral Protection Settings0tc

N / Ir Function Long-Time Pickup Value Ir(IN) Short-Time Pickup Value Isd(IN)

OFF N/A N/A

0.5 1 Ir Isd OSN with ENCT 1.6 x I

and short-time I

r

/ Ir function, the setting values of

N

I

/ 2 I

r

protection pickups.

sd

/ 2

sd

1.6 x Isd

ENGLISH

The setting values are identical for the phases, the neutral long-time, and shorttime protection time delays.

Table 21 shows the setting values of the neutral protection pickups (set to OSN) according to the phase protection pickup I

Table 21 – Setting Values of the Neutral Protection Pickups

I

/ IN Values Long-Time Pickup Value Ir(IN) Short-Time Pickup Value Isd(IN)

r

Ir / IN < 0.63 1.6 x Ir 1.6 x Isd

0.63 < Ir / In < 1 I

Selection of the ENCT Option

Table 22 – The ENCT Option

In Rating Neutral Protection Limited to In OSN Protection > In

1

For the 600 A rating, the OSN function is limited to In (= 600 A).

The ENCT option is an external neutral CT for a trip unit.

setting:

r

N

60 A LV429521 LV429521 100 A LV429521 LV429521 150 A LV430563 LV430563 250 A LV430563 LV432575 400 A LV432575 LV432575 600 A LV432575 No

1

IN x I

/ I

sd

r

39-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 2—Electrical Distribution Protection

Table 22 indicates the reference for the ENCT option installed according to the In

ENGLISH

rating of the MicroLogic trip unit or the need for OSN protection:

Installing the ENCT option

1. Connect the neutral conductor to the ENCT option primary (terminals H1, H2).

2. Remove (if existing) the jumper between terminals T1 and T2 of the MicroLogic trip unit.

3. Connect the ENCT option secondary (terminals T1, T2) to terminals T1 and T2 of the MicroLogic trip unit.

4. Declare the ENCT option when setting the protection functions for the MicroLogic trip unit.

NOTE: If the ENCT option is declared before its installation, the MicroLogic trip unit develops a fault (ENCT screen). Either install the ENCT option or to connect a jumper between terminals T1 and T2 on the MicroLogic trip unit. Clear the ENCT screen by pressing the OK key two times (enter and confirm).

40-EN

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

ZSI 1

ZSI 2

t

sd

Q

1

t

sd

Q

1

Q

2

Q

2

Z1 Z2 Z3 Z4

Z5

Z1 Z2

Z3

Z4

Z5

Z1

Z2

Z3 Z4 Z5

3Q2Q1Q

Zone Selective Interlocking (ZSI)

Use zone selective interlocking (ZSI) to reduce the electrodynamic stress on equipment when using selective coordination.

Example of ZSI Operation

ZSI improves coordination by being selective about the position of the fault. A signal wire links the installed circuit breaker trip units and manages the trip time delay for upstream circuit breakers according to the fault position.

ZSI optimizes the availability of energy and reduce electrodynamic stress on the equipment. It is applicable to both short-time and ground-fault protection.

Figure 13 – ZSI Example

The trip units on circuit breakers Q1 and Q2 have the same time delay settings as with selective coordination.

• If a fault occurs downstream of downstream circuit breaker Q2 (Figure 13, ZSI

1), the trip units on circuit breakers Q1 and Q2 detect the fault simultaneously. The trip unit on circuit breaker Q2 sends a restraint signal to the trip unit on circuit breaker Q1, which remains set on its time delay t

. Circuit breaker Q2

sd

trips and clears the fault (instantaneously if circuit breaker Q2 is not delayed). The other users downstream of circuit breaker Q1 still have power, the energy availability is optimized.

• If a fault occurs downstream of circuit breaker Q1 (Figure 13, ZSI 2), the trip unit on circuit breaker Q1 does not receive a signal from the trip unit on circuit breaker Q2. Time delay t

is therefore inhibited. Circuit breaker Q1 trips and

sd

clears the fault on the equipment instantaneously. The electrodynamic stress created by the short-circuit current on the equipment is reduced to the minimum.

ENGLISH

ZSI Wiring

The MicroLogic 5 and 6 trip units support ZSI. The signal wire is connected to the trip unit as shown Figure 14.

Figure 14 – ZSI Wiring

Q1 Upstream circuit breaker Q2 Circuit breaker being wired Q3 Downstream circuit breaker

41-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 2—Electrical Distribution Protection

Z1 Z2

Z3 Z4

Z5

Z1 Z2

Z3

Z4

Z5

Q1

Q2

Z1 ZSI-OUT source

ENGLISH

Z2 ZSI-OUT Z3 ZSI-IN source Z4 ZSI-IN ST short-time protection Z5 ZSI-IN GF ground-fault protection (MicroLogic 6)

The short-time and ground-fault protection time delay settings (MicroLogic 6) for trip units using ZSI must comply with the rules relating to selective coordination.

ZSI Connection

Connection Wire Characteristics:

• Impedance: <16 Ω per 300 m

• Maximum length: 300 m

• Type of cable: Shielded twisted (Belden 8441 or equivalent)

• Permissible conductor cross-section: 0.4–2.5 mm2

• Interconnection limit on inputs Z3, Z4, and Z5 (to downstream devices): 15 devices

• Interconnection limit on outputs Z1 and Z2 (to upstream devices) 5 devices

The figures show the options for connecting devices together:

Figure 15 – Connection Diagrams

Ground-fault and short-time protection (MicroLogic 6)

Q1

Z1 Z2

Short-time protection

Z1 Z2

Ground-fault protection (MicroLogic 6)

NOTE: When ZSI is not used downstream, short circuit inputs Z3, Z4, and Z5. Failure to comply with this principle inhibits setting the short-time and ground-fault protection time delays.

Q1

Z3 Z4

Z5

Z3

Z4

Z5

Q2

Z1 Z2

Q2

Z3 Z4

Z5

Z3 Z4

Z5

Connect output Z2 of the trip unit on the downstream circuit breaker Q2 to inputs Z4 and Z5 of the trip unit on the upstream circuit breaker Q1.

• Connect output Z2 of the trip unit on the

downstream circuit breaker Q2 to input Z4 of the trip unit on the upstream circuit breaker Q1.

• Short circuit inputs Z3 and Z5.

• Connect output Z2 of the trip unit on the

downstream circuit breaker Q2 to input Z5 of the trip unit on the upstream circuit breaker Q1.

• Short circuit inputs Z4 and Z3.

Multi-Source Distribution If a number of circuit breakers are installed upstream (as with multi-source

distribution), the same multi-source principles apply. Connect a downstream circuit breaker to all the circuit breakers installed directly upstream:

• Connect all the commons (outputs Z1/inputs Z2) to one another.

• Connect output Z2 simultaneously to any or all inputs Z3, Z4, or Z5 on all of the circuit breaker trip units installed upstream.

NOTE: Management of this configuration does not require any additional relays to ensure ZSI is controlled according to the sources in service.

42-EN

Section 2—Electrical Distribution Protection MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Z1 Z2

Z3

Z4

Z5

MasterPact NT/NW PowerPact P/R

PowerPact H/J/L

S434212

Z1 Z2

Z3

Z4/Z5

RC Filter When using ZSI to connect PowerPact™ H-, J- or L-frame circuit breakers with

MasterPact™ NT/NW or PowerPact P/R circuit breakers, add a ZSI Module (part number S434212) to the circuit by the MasterPact NT/NW or PowerPact P/R circuit breaker.

Figure 16 – ZSI Module S434212

Testing the ZSI

Test connection and operation of ZSI using the UTA and the LTU software available at schneider-electric.com.

ENGLISH

43-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

Section 3— Metering Function

ENGLISH

Real-Time Measurements

Instantaneous Values

MicroLogic A (ammeter) and E (energy) trip units:

• Measure instantaneous current for each phase and the neutral current (if present), in real time as an rms value

• Measure ground-fault current (MicroLogic 6), in real time as an rms value

• Calculate the average phase current in real time

• Determine the maximum and minimum values for these electrical quantities

MicroLogic E trip units:

• Measure the instantaneous phase-to-phase and phase-to-neutral voltage (if present), in real time as an rms value

• Calculate the associated electrical quantities from the rms values of the currents and voltages:

— Average phase-to-phase voltage and phase-to-neutral voltage (if present) — Current unbalances — Phase-to-phase voltage unbalances and phase-to-neutral voltage

unbalances (if present) — Powers (see “Power Metering (MicroLogic E)” on page 49) — Quality indicators: frequency, THD(I), and THD(V) (see “Metering Energy

Quality Indicators (MicroLogic E)” on page 58 and “Power Factor PF and

Cos φ Measurement (MicroLogic E)” on page 60)

• Display operating indicators: quadrants, phase rotation, and type of load

• Determine the maximum and minimum values for these electrical quantities

• Increment in real time three energy meters (active, reactive, apparent) using the total power real-time values (see page 49)

The sampling method utilizes the values of the harmonic currents and voltages up to the 15th order. The sampling period is 512 microseconds.

The values of the electrical quantities, whether measured or calculated in real time, update once a second.

Measuring the Neutral Current

MicroLogic trip units with the ENCT option measure the neutral current:

Measure the neutral current by adding a special external neutral current transformer on the neutral conductor (for transformer information, see the PowerPact™ H-, J-, and L-Frame Circuit Breaker Catalog).

Measure the neutral current in the same way as the phase currents.

Measuring the Phase-to-Neutral Voltages

MicroLogic trip units with the ENVT option measure the phase-to-neutral voltages

, VBN, and VCN.

V

AN

44-EN

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

IA- I

avg

IB - I

avg

IC - I

avg

< 0 > 0 < 0

IA IB IC I

avg

To measure phase-to-neutral voltages, it is necessary to:

• Connect the wire from the ENVT option to the neutral conductor

• Declare the ENVT option (configured using the RSU software)

Measure the phase-to-neutral voltages in the same way as the phase-to-phase voltages.

Calculating the Average Current and Average Voltage

MicroLogic trip units calculate the:

• Average current I

IAIBI

+ + 

--------------------------------

I

=

avg

3

, the arithmetic mean of the three phase currents:

avg

C

• Average voltages:

— Phase-to-phase V

, the arithmetic mean of the three phase-to-phase

avg

voltages:

VABV

+ + 

--------------------------------------------------

=

V

avg

— Phase-to-neutral V

BCVCA

3

, the arithmetic mean of the three phase-to-neutral

avg

voltages (MicroLogic trip unit equipped with the ENVT option):

VANV

+ + 

---------------------------------------------------

=

V

avg

BNVCN

3

Measuring the Current and Voltage Phase Unbalances

MicroLogic trip units calculate the current unbalance for each phase (three values). The current unbalance is a percentage of the average current:

IAIBI

+ + 

I

avg

--------------------------------

=

C

3

ENGLISH

I

–

kIavg

unbalance (%)

I

k

--------------------

I

avg

100 where k = A, B, C=

MicroLogic trip units calculate the:

• Phase-to-phase voltage unbalance for each phase (three values)

• Phase-to-neutral (if present) voltage unbalance for each phase (three values)

The voltage unbalance is a percentage of the average value of the electrical quantity (V

Vjk unbalance (%)

avg

):

V

–

jkVavg

--------------------------

V

avg

100 where jk = AB, BC, CA=

45-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

VAB - V

avg

VBC - V

avg

VCA- V

avg

> 0 < 0 < 0

V

AB

VBC VCA V

avg

ENGLISH

NOTE: The unbalance values are signed (relative values as a percentage). The

maximum/minimum unbalance values are absolute values as a percentage.

Maximum/Minimum Values

The MicroLogic A and E trip units determine in real time the maximum (max) and minimum (max) value reached by designated electrical quantities for the current period.

The MicroLogic A (ammeter) trip unit determines in real time:

• The maximum (max) and minimum (min) value of the current for each phase reached for the current period.

• The maximum value (MAXmax) of all phase currents and the minimum value (MINmin) of all phase currents.

The MicroLogic E (energy) trip unit determines in real time the maximum (max) and minimum (min) value reached by the following electrical quantities for the current period.

• Current: Phase and neutral currents, average currents, and current unbalances

• Voltage: Phase-to-phase and phase-to-neutral voltages, average voltages, and voltage unbalances

• Power: Total power and power for each phase (active, reactive, apparent, and distortion)

• Total harmonic distortion: The total harmonic distortion THD for both current and voltage

• Frequency

• The maximum value (MAXmax) of all phase currents and the minimum value (MINmin) of all phase currents.

The current period for a group starts at the last reset of one the maximum values in the group.

Resetting Maximum/Minimum Values

Reset the maximum and minimum values for a group using the communication option or on the Front Display Module (FDM121) (see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker—User Guide).

Reset the maximum and minimum values in a group on the keypad using the menu (see “Resetting Peak Demand Values” on page 20) for the following groups:

46-EN

• Currents

• Voltages

• Powers

Only the maximum values are displayed, but both the maximum and minimum values are reset.

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

5...60 mn

5–60 mn

Calculating Demand Values (MicroLogic E)

The MicroLogic E trip unit calculates:

• The demand values of the phase and neutral currents

• The demand values of the total (active, reactive, and apparent) powers

Each maximum demand value (peak) is stored in memory.

The demand values update according to the type of window.

The demand value of a quantity can be called the:

• Average/mean value

• Demand

• Demand value (over an interval)

Example:

Current demand or current demand value

Power demand or power demand value.

NOTE: Do not confuse the demand value with the mean (which is an instantaneous value).

Example:

ENGLISH

Demand Value Models

Metering Window

Fixed Metering Window

Mean current (or average current) I

= (IA + IB + IC)/3.

avg

The demand value of a quantity over a defined interval (metering window) is calculated according to two different models:

• Arithmetic demand value for the powers

• Quadratic demand value (thermal image) for the currents

The specified time interval T is chosen according to three types of metering window:

• Fixed window

• Sliding window

• Synchronized window

The duration of the fixed metering window can be set from 5 to 60 minutes in increments of 1 minute.

By default, the duration of the fixed metering window is 15 minutes.

At the end of each fixed metering window:

• The demand value over the metering window is calculated and updated.

• Calculation of a new demand value is initialized on a new metering window.

47-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

60 s

5...60 mn

5–60 mn

60 s

Sliding Metering Window

ENGLISH

Set the duration of the sliding metering window from 5 to 60 minutes in increments of 1 minute.

By default, the duration of the sliding metering window is 15 minutes.

At the end of each sliding metering window and then once a minute:

• The demand value over the metering window is calculated and updated.

• Calculation of a new demand value is initialized on a new metering window:

— By eliminating the contribution of the first minute of the previous metering

window

— By adding the contribution of the current minute

Synchronized Metering Window

Synchronization is done using the communication network.

When the synchronization pulse is received:

• The demand value over the synchronized metering window is recalculated.

• A new demand value is calculated.

NOTE: The interval between two synchronization pulses must be less than 60 minutes.

Quadratic Demand Value (Thermal Image)

The quadratic demand value model represents the conductor heat rise (thermal image).

The heat rise created by the current I(t) over the time interval T is identical to the heat rise created by a constant current Ith over the same interval. Ith represents the thermal effect of the current I(t) over the interval T. If the period T is infinite, the current I(th) represents the thermal image of the current.

The demand value according to the thermal model is calculated on a sliding metering window.

NOTE: The thermal demand value is similar to an rms value.

Arithmetic Demand Value

The arithmetic demand value model represents the consumption of electricity and the associated cost.

The demand value according to the arithmetic model can be calculated on any type of metering window.

Peak Demand Value

The MicroLogic E trip unit indicates the maximum value (peak) reached over a defined period for:

• The demand values of the phase and neutral currents

• The demand values of the total powers (active, apparent, and reactive)

48-EN

The demand values are organized into two groups (see “Real-Time Measurements” on page 44):

• Current demand values

• Power demand values

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Resetting Peak Demand Values

Reset the peaks in a group using the communication option or on the Front Display Module (FDM121) (see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker—User Guide).

Power Metering (MicroLogic E)

The MicroLogic E trip unit calculates the electrical quantities required for power management:

• The instantaneous values of the:

ENGLISH

• The maximum and minimum values for each of these powers

• The demand values and the peaks for the total P

• The cos φ and power factor (PF) indicators

• The operating quadrant and type of load (leading or lagging)

All these electrical quantities are calculated in real time and their values updated once a second.

Principle of Power Metering

The MicroLogic E trip unit calculates power values from the rms values of the currents and voltages.

The calculation principle is based on:

• Definition of the powers

• Algorithms

• Definition of the power sign (circuit breaker powered from the top or underside)

The calculation algorithm, based on the definition of the powers, is explained in “Power Calculation Algorithm” on page 51.

— Active powers (total P — Reactive powers (total Q — Apparent powers (total S

and per phase) in kW

tot

and per phase) in kvar

tot

and per phase) in kVA

tot

— Fundamental reactive powers (total Qfund — Distortion powers (total D

and per phase) in kvar

tot

and per phase) in kvar

tot

, Q

tot

, and S

tot

powers

tot

Calculations utilize harmonics up to the 15th.

49-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

I

A VAN IB VBN IC VCN

A

C

B

I

A VAB IB IC VCB

W1

W2

C

B

A

Calculation Based on Neutral Conductor

ENGLISH

Circuit Breaker with ENVT: 3 Wattmeter Method Circuit Breaker without ENVT: 2 Wattmeter Method

The calculation algorithm depends on the presence or absence of voltage metering on the neutral conductor.

Use on:

• Circuit Breaker,

Distributed Neutral (ENVT option)

When there is voltage metering on the neutral (circuit breaker with ENVT option), the MicroLogic E trip unit measures the power by using three single-phase loads downstream.

VANI

tot

:

VBNI

A

( , )cos VCNI

B

VCNI

( , )cos+ +=

C

3C

To calculate power P

P

tot

VANI

( , )cos VBNI

N

Table 23 – Metering Options

Method

2 Wattmeters X X 3 Wattmeters — — X

1

The measurement is incorrect once there is current circulating in the neutral.

Non-Distributed

Neutral

Distributed Neutral

Declare the ENVT option using the RSU software (see “ENVT Option Setup” on page 82) and connect the ENVT to the neutral conductor.

When there is no voltage metering on the neutral), the MicroLogic E trip unit measures the power:

• Using the current from two phases (I

and IC)

A

and composite voltages from each of these two phases in relation to the third (V

and VBC)

AB

• Supposing (by definition) that the current in the neutral conductor is zero:

iAiBi

+ + 0=

C

To calculate power P

P

VABI

tot

A

Distributed Neutral

No ENVT Option

equals PW1 + PW2:

tot

VABI

( , )cos VCBI

A

1

VCBI

( , )cos+=

C

Distributed Neutral

ENVT Option

—

50-EN

NOTE: Declaration of the ENCT option alone does not result in correct calculation of the powers. It is essential to connect the wire from the ENVT to the neutral conductor.

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Q2

Q3

P > 0 Q > 0P < 0

P > 0

Q > 0

0 < Q0 < QP < 0

Q1

Q4

P

Q

Power Sign and Operating Quadrant

Figure 17 – Operating Quadrants (Q1, Q2, Q3, and Q4)

ENGLISH

Capacitive (Lead)

Inductive (Lag)

Capacitive (Lead)

By definition, the active powers are:

• Signed + when used the user, that is, when the device is acting as a receiver

• Signed - when supplied by the user, that is, when the device is acting as a generator

By definition, the reactive powers are:

• Have the same sign as the active energies and powers when the current lags behind the voltage, that is, when the device is inductive (lagging)

• Have the opposite sign to the active energies and powers when the current is ahead of the voltage, that is, when the device is capacitive (leading)

NOTE: The power values are:

— Signed on the communication (for example, when reading the FDM121) — Not signed when reading the MicroLogic LCD display

Power Supply

Power Calculation Algorithm

Power H-, J- and L-frame circuit breakers from the top (standard, considered to be the default position) or from the underside: the sign for the power running through the circuit breaker depends on the type of connection.

NOTE: By default, the MicroLogic E trip unit signs as positive the powers running through the circuit breaker supplied from the top with loads connected from the underside.

Circuit breakers powered from the underside must have the powers signed as negative.

Modify the Power sign using the RSU software (see “Power Setup” on page 82).

The algorithms are given for both two wattmeter and three wattmeter calculation methods. The power definitions and calculation are given for a network with harmonics.

The MicroLogic E trip unit displays all the calculated quantities (on-screen or using the communication network). With the two wattmeter calculation method, it is not possible to deliver power metering for each phase.

51-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

Table 24 – Power Algorithms

ENGLISH

Calculation Circuit Breaker with ENVT Option Circuit Breaker without ENVT Option

Input Data: Voltages and currents for

each phase (for more information about calculating harmonics, see Harmonic Currents, p. 87)

Active Powers

Apparent Powers for Each Phase

Reactive Powers With Harmonics for Each Phase

15



VinI

and

in

Vijt  V

=



n 1=

ViNt  V

=



n 1=

15

Iit  Iin2 Nt n– sin

= Iit  I



n 1=

Where i, j = A, B, C (phase)

1

---

P

= =

v

i

Where i = A, B, C (phase)

P

tot

S

i

Reactive power with harmonics is not physically significant.

Q

i



T

PAPBP

+ +=

ViIi =

2

S

i

2 Nt sin

ijn

15

2 Nt sin

iNn

t( )iit( ) td

n 1=

C

Where i = A, B, C (phase) —

2

P

–=

Where i = A, B, C (phase)

i

t  V

V

i

j

Vit  V

viniin( , )cos

15

=



n 1=

15

=



n 1=

15

=

n 1=



in

2

i

jn

2

in

2

—

— (Only the total active power can be

calculated.)

P

tot

and Pw2 are the fictional powers

P

w1

calculated by the 2 Wattmeter method.

—

+=

W1PW2

Reactive Powers The reactive power of the

fundamental corresponds to the physical reactive power.

Distortion Power (The quadratic difference between the reactive power with harmonics and the reactive power fundamental).

Total Reactive Power (With Harmonics)

Total reactive power (with harmonics) is not physically significant.

Total Apparent Power

QfundiViIiisin=

Qfund

tot

Q

D

i

D

DADBD

tot

Q

tot

S

tot

Qfund

2

Qfund

–=

i

+ +=

Qfund

2

P

tot

Where i = A, B, C (phase)

Qfund

+ +=

totA

2

Where i = A, B, C (phase)

i

C

2

D

+= Q

tot

2

Q

+=

tot

totB

Qfund

totC

Only the total reactive power can be calculated.

Qfund

Qfundw1 and Qfundw2 are the fictional powers calculated by the 2-wattmeter method.

Only the total distortion power can be calculated.

D

tot

and Dw2 are the fictional powers

D

w1

calculated by the 2-wattmeter method.

tot

S

tot

Qfundw1Qfund

tot

Dw1Dw2+=

Qfund

tot

2

P

Q

+=

tot

2

tot

+=

D

+=

tot

2

w2

2

52-EN

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Energy Metering (MicroLogic E)

The MicroLogic E trip unit calculates the different types of energy using energy meters and provides the values of:

• The active energy E consumed EpIn

• The reactive energy E energy consumed E

• The apparent energy Es

Energy values are shown as an hourly consumption. Values update once a second. Values are stored in nonvolatile memory once an hour.

NOTE: When the current through the circuit-breaker is low (15–50 A, depending on the rating), the MicroLogic E must be powered with an external 24 Vdc power supply to calculate energy. See “Control Power” on page 9.

Principle of Energy Calculation

By definition

• Energy is the integration of the instantaneous power over a period T:

E Gt

• The value of the instantaneous active power P and the reactive power Q can be positive (power consumed) or negative (power supplied) according to the operating quadrant (see “Power Sign and Operating Quadrant” on page 51).

• The value of the apparent power S is always counted positively.

Partial Energy Meters

, the active energy supplied EpOut and the active energy

p

, the reactive energy supplied EqOut and the reactive

q

In

q

=

where G = P, Q, or S



T

ENGLISH

For each type of energy, active or reactive, a partial energy consumed meter and a partial energy supplied meter calculate the accumulated energy by incrementing once a second:

• The contribution of the instantaneous power consumed for the energy consumed meter

E t In (consumed) Gin u  Gin+

where Gin= P

   



 

t 1–

or Q

tot

3600=

consume

• The contribution as an absolute value of the power supplied for the energy supplied meter (power supplied is always counted negatively)

E t  Out  (supplied) Gout u  Gout+

where Gin= P

tot

   



 

t 1–

or Q

consume

tot

3600=

The calculation is initialized by the last Reset action (see “Resetting Energy Meters” on page 54).

53-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

Energy Meters

ENGLISH

From the partial energy meters and for each type of energy, active or reactive, an energy meter provides either of the following measurements once a second:

• The absolute energy, by adding the consumed and supplied energies together. The energy accumulation mode is absolute

E(t)absolute = E(t)In + E(t)Out

• The signed energy, by differentiating between consumed and supplied energies. The energy accumulation mode is signed

E(t)signed = E(t)In – E(t)Out

The apparent energy E

Selecting Energy Calculation

The information sought determines calculation selection:

• The absolute value of the energy that has crossed the poles of a circuit breaker

• The signed values of the energy supplied and the energy consumed are

By default, absolute energy accumulation mode is configured.

The setting can be modified using the RSU software (see “Energy Accumulation Mode Setup” on page 83).

Resetting Energy Meters

The energy meters are arranged in the energy generating set (see “Real-Time Measurements” on page 44). Reset the energy meters using the communication option or on the FDM121 (see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker—User Guide).

There are two additional active energy accumulation meters (E cannot be reset.

is always counted positively.

s

or the cables of an item of electrical equipment is relevant for maintenance of an installation.

required to calculate the economic cost of an item of equipment.

In and EpOut) that

p

54-EN

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

H1 (50 Hz)

H3 (150 Hz)

H5 (250 Hz)

I

rms

I

t

1

2

3

4

Harmonic Currents

Origin and Effects of Harmonics

Many nonlinear loads present on an electrical network creates a high level of harmonic currents in the electrical networks.

These harmonic currents:

• Distort the current and voltage waves

• Degrade the quality of the distributed energy

These distortions, if they are significant, can result in:

• Malfunctions or degraded operation in the powered devices

• Unwanted heat rises in the devices and conductors

• Excessive power consumption

These various problems increase the system installation and operating costs. It is therefore necessary to control the energy quality carefully.

Definition of a Harmonic

Figure 18 – Current Wave Distorted by a Harmonic Component

ENGLISH

1. I

= RMS value of the total current

rms

2. I1 = Fundamental Curve

3. I3 = Third Order Harmonic Current

4. I5 = Fifth Order Harmonic Current

A periodic signal is a superimposition of:

• The original sinusoidal signal at the fundamental frequency (for example, 50 Hz or 60 Hz)

• Sinusoidal signals whose frequencies are multiples of the fundamental frequency called harmonics

• Any DC component

55-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

This periodic signal is broken down into a sum of terms:

ENGLISH

y t  y



yn2x nt n– sin 

+=

0



1

where:

Y0Value of the DC component=

•

RMS value of the nth harmonic=

y

•

n

 Pulsing of the fundamental frequency=

•

RMS Currents and Voltages

•

Phase displacement of

=



n

harmonic component

NOTE: The DC component is usually very low (even upstream of rectifier bridges) and can be deemed to be zero.

NOTE: The first harmonic is called the fundamental (original signal).

MicroLogic E trip units display the rms values of currents and voltages (“Real-Time Measurements” on page 44).

• The total rms current Irms is the square root of the sum of the square of the rms currents of each harmonic:



I

rms



2

I

nrms

1

I

1rms

2

I

2rms

2

... I

nrms

2

...+ + + += =

• The total rms voltage Vrms is the square root of the sum of the square of the rms voltages of each harmonic:



V

rms



1

V

nrms

2

V

1rms

2

V

2rms

2

... V

nrms

2

...+ + + += =

Acceptable Harmonic Levels

Various standards and statutory regulations set the acceptable harmonic levels:

• Electromagnetic compatibility standard adapted to low voltage public networks:

• Electromagnetic compatibility standards:

• Recommendations from energy distribution companies applicable to the

The results of international studies have identified typical harmonic values that should not be exceeded.

56-EN

IEC 61000-2-2

— For loads below 16 A: IEC 61000-3-2 — For loads higher than 16 A: IEC 61000-3-4

installations

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 25 – Typical Harmonic Values for Voltage as a Percentage of the

Fundamental

Odd Harmonics that are

Not Multiples of 3

Order (n) Value as % of V

5 6% 3 5% 2 2%

7 5% 9 1.5% 4 1% 11 3.5% 15 0.3% 6 0.5% 13 3% >15 0.2% 8 0.5% 17 2% — — 10 0.5%

>19 1.5% — — >10 0.2%

Odd Harmonics that are

Multiples of 3

Order (n) Value as % of V1Order (n) Value as % of V

1

Even Harmonics

NOTE: Harmonics of a high order (n > 15) have low rms values and can therefore

be ignored.

ENGLISH

1

57-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

Metering Energy Quality Indicators (MicroLogic E)

ENGLISH

The MicroLogic E trip unit provides, using the communication network, the measurements, and quality indicators required for energy management:

• Reactive power measurement

• Power factor PF

• cos φ

• Total harmonic distortion THD

• Distortion power measurement

For more information, see “Power Metering (MicroLogic E)” on page 49 and “Energy Metering (MicroLogic E)” on page 53.

The energy quality indicators consider:

• Reactive energy management (cos φ metering) to optimize the size of the equipment or avoid peak tariffs

• Management of harmonics to avoid degradation and malfunctions during operation

Use these measurements and indicators to implement corrective actions to maintain energy quality.

Current THD

The current THD is a percentage of the rms value of harmonic currents greater than 1 in relation to the rms value of the fundamental current (order 1). The MicroLogic E trip unit calculates the total harmonic current distortion THD up to the 15th harmonic:

15

2

I

nrms

THD I 



2

---------------------------

I

rms

I

rms

 

----------

 

I

rms

2

1–= =

The current THD can be higher than 100%.

Use the total harmonic distortion THD(I) to assess the deformation of the current wave with a single number (see Table 26).

Table 26 – THD Limit Values

THD(I) Value Comments

THD(I) < 10% Low harmonic currents: Little risk of malfunctions. 10% < THD(I) < 50% Significant harmonic currents: Risk of heat rise, oversizing of supplies.

High harmonic currents: The risks of malfunction, degradation, and

50% < THD(I)

dangerous heat rise are almost certain unless the installation is calculated and sized with this restriction in mind.

58-EN

Deformation of the current wave created by a nonlinear device with a high THD(I) can lead to deformation of the voltage wave, depending on the level of distortion and the source impedance. This deformation of the voltage wave affects all of the devices powered by the supply. Sensitive devices on the system can therefore be

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

affected. A device with a high THD(I) may not be affected itself but could cause malfunctions on other, more sensitive devices on the system.

NOTE: THD(I) metering is an effective way of determining the potential for problems from the devices on electrical networks.

Voltage THD

The voltage THD the percentage of the rms value of harmonic voltages greater than 1 in relation to the rms value of the fundamental voltage (first order). The MicroLogic E trip unit calculates the voltage THD up to the 15th harmonic:

ENGLISH

Distortion Power D

THD V 

15



2

-----------------------------

=

V

nrms

1rms

2

This factor can in theory be higher than 100% but is in practice rarely higher than 15%.

Use the total harmonic distortion THD(V) to assess the deformation of the voltage wave with a single number. The limit values in Table 27 are commonly evaluated by energy distribution companies:

Table 27 – THD Limit Values

THD(V) Value Comments

THD(V) < 5% Insignificant deformation of the voltage wave. Little risk of malfunctions. 5% < THD(V) < 8% Significant deformation of the voltage wave. Risk of heat rise and malfunctions.

8% < THD(V)

Significant deformation of the voltage wave. There is a high risk of malfunction unless the installation is calculated and sized based on this deformation.

Deformation of the voltage wave affects all devices powered by the supply. NOTE: Use the THD(V) indication to assess the risks of disturbance of sensitive

devices supplied with power.

When harmonic distortion is present, calculation of the total apparent power involves three terms:

2

S

tot

2

P

tot

2

Q

+ +=

tot

2

D

tot

The distortion power D qualifies the energy loss due to the presence of harmonic distortion.

59-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

T

0

1.2

1

0.8

0.6

0.4

1.2

15010050

Power Factor PF and Cos φ Measurement (MicroLogic E)

ENGLISH

Power Factor PF

The MicroLogic E trip unit calculates the power factor PF from the total active power P

PF

This indicator qualifies:

• The oversizing necessary for the installation power supply when harmonic

• The presence of harmonic currents by comparison with the value of the cos φ

Cos φ

and the total apparent power S

tot

P

tot

----------

=

S

tot

currents are present

tot

:

The MicroLogic E trip unit calculates the cos φ from the total active power Pfund and the total apparent power Sfund

cos

=

This indicator qualifies use of the energy supplied.

Power Factor PF and Cos φ When Harmonic Currents are Present

Figure 19 – PF/Cos φ as a Function of THD(I)

If the supply voltage is not too distorted, the power factor PF is a function of the cos φ and the THD(I):

------------------------------------

PF

=

1 THD I 

Pfund

tot

-----------------------

Sfund

tot

cos

+

of the fundamental (first order):

tot

2

tot

60-EN

By comparing the two values, it is possible to estimate the level of harmonic deformation on the supply.

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

P > 0 Q > 0 PF > 0P < 0

P > 0

Q > 0

0 < Q0 < QP < 0 PF > 0

PF < 0

Inductive (Lag)

Capacitive (Lead)

Inductive (Lag)

Q

P

1Q2Q

4Q3Q

0 +

+1

0 +

Q4

Q1

cos  > 0

P > 0 Q > 0

PF > 0

P < 0

P > 0

Q > 0

0 < Q0 < QP < 0

PF > 0

PF < 0

Q2

Inductive (Lag)

Capacitive (Lead)

Inductive (Lag)

Q

P

Q1

4Q3Q

Sign for the Power Factor PF and Cos φ

Two sign conventions can be applied for these indicators:

• IEC convention: The sign for these indicators complies strictly with the signed , S

calculations of the powers (that is, P

tot

, Pfund

tot

• IEEE convention: The indicators are calculated in accordance with the IEC

convention but multiplied by the inverse of the sign for the reactive power (Q)

P

tot

----------

PF

x sign–  Q  =

S

tot

and

Pfund

tot

-----------------------

cos

Sfund

x sign–  Q  =

tot

NOTE: For a device, a part of an installation which is only a receiver (or generator), the advantage of the IEEE convention is that it adds the type of reactive component to the PF and cos φ indicators:

• Lead: Positive sign for the PF and cos φ indicators

• Lag: Negative sign for the PF and cos φ indicators

Figure 20 – Sign for Power Factor PF an

, and Sfund

tot

)

ENGLISH

IEC Convention

Operation in All Quadrants (Q1, Q2, Q3, Q4)

IEEE Convention

Operation in All Quadrants (Q1, Q2, Q3, Q4)

Values of cos φ in Receiver Operation (Q1, Q4)

0 -

Q1

cos  < 0

-1

+1

cos  > 0

0 +

Q4

61-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

-1

+1

cos ϕ

MIN cos ϕ

MAX cos ϕ

- 0

+ 0

-1 +1

cos ϕ

+ 0

1

2

3

1

4

5

6

7

- 0

Q4

Q1

Q4

Q1

061138716

Managing the Power Factor PF and Cos φ:

ENGLISH

Minimum and Maximum Values

Managing the PF and cos φ indicators consists of:

• Defining critical situations

• Implementing monitoring of the indicators in accordance with the definition of critical situations

Situations are considered critical when the values of the indicators are around 0. The minimum and maximum values of the indicators are defined for these situations.

Figure 21 illustrates the variations of the cos φ indicator (with the definition of the cos φ min/ max) and its value according to IEEE convention for a receiver application:

NOTE: The minimum and maximum values of the PF and cos φ indicator indicators are not physically significant: they are markers which determine the ideal operating zone for the load.

Figure 21 – Cos φ Indicator

1. Arrows indicating the cos φ variation range for the load in operation

2. Critical zone + 0 for highly capacitive devices (shaded green)

3. Critical zone - 0 for highly inductive devices (shaded red)

4. Minimum position of the load cos φ (lagging): red arrow

5. Variation range of the value of the load cos φ (lagging): red

6. Maximum position of the load cos φ (leading): green arrow

7. Variation range of the value of the load cos φ (leading): green PF PF

(or cos φ

max

(or cos φ

min

) is obtained for the smallest positive value of the PF (or cos φ) indicator.

max

) is obtained for the largest negative value of the PF (or cos φ) indicator.

min

Monitoring the Cos φ and Power Factor PF Indicators

According to the IEEE convention, critical situations in receiver mode on a capacitive or inductive load are detected and discriminated (two values).

Table 28 indicates the direction in which the indicators vary and their value in receiver mode.

• The quality indicator max and min indicate both critical situations.

• According to the IEC convention, critical situations in receiver mode on a capacitive

62-EN

or inductive load are detected but not discriminated (one value).

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 28 – Indicator Direction and Value in Receiver Mode

IEEE Convention IEC Convention

Operating quadrant Q1 Q4 Q1 Q4

Direction in which the cos vary over the operating range

Value of the cos  (or PFs) over the operating range

 (or PFs)

min

-0...-0.3...-0.8...-1 +1...+0.8...+0.4...+0 +0...+0.3...+0.8...+1 +1...+0.8...+0.4...+0

max

min

max

min

max

min

max

Selecting the Sign Convention for the Cos φ and Power Factor PF

Set the sign convention for the cos φ and PF indicators with the RSU software (see “Metering Setup” on page 82).

The IEEE convention is applied by default. NOTE: The sign convention selection also determines the alarm selection. For

example, monitoring of an alarm indicator which uses IEC convention is incorrect if the IEEE convention has been configured.

Measurements

MicroLogic trip units provide measurements:

ENGLISH

Accuracy

• Using the communication network

• On the Front Display Module (FDM121) in the Services/Metering menu (see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker—User Guide).

Some measurements can be accessed on the MicroLogic trip unit display (see “Metering Screens” on page 15).

The tables in this chapter indicate the measurements available and specify the following information for each measurement:

• Unit

• Measurement range

• Accuracy

• Accuracy range

The trip units comply with the requirements of UL 489.

The accuracy of each measurement is defined:

• For a MicroLogic trip unit powered in normal conditions

• At a temperature of 73°F +/- 3°F (23°C +/- 2°C)

For a measurement taken at a different temperature, in the temperature range 13°F to 158°F (-25°C to +70°C), the derating coefficient for temperature accuracy is 0.05% per degree.

The accuracy range is the part of the measurement range for which the defined accuracy is obtained; the definition of this range can be linked to the circuit breaker load characteristics.

63-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

Real-Time Measurements

ENGLISH

Table 29 – MicroLogic A Real-Time Measurements

Item Measurement Unit

Current Metering

with ENCT

(I

N

option only)

• Phase I

• Maximum current values of phases I

I

• Maximum value (MAXmax) of all phase currents

• Minimum current values of phases I

• Minimum value (MINmin) of all phase currents

• Average current I

• Maximum average current value I

• Minimum average current value I

MicroLogic 6

• Ground-fault current measurement

• Maximum/minimum value of the ground-fault current

, IB, IC, and neutral IN current measurement

A

N max

measurements

avg

avg min

A max

A min

avg max

, IB

, IC

, and the neutral

max

, and neutral IN

min

A 0–20 I

, I

B min

max

, IC

% I

Table 30 – MicroLogic E Real-Time Measurements

Item Measurement Unit

Current Metering

with ENCT

(I

N

option only)

Current Unbalance Metering

The accuracy range is for the current range:

0.2 –1.2 I

.

n

Voltage Metering

(V

, VBN, VCN

AN

with ENVT option only)

• Phase I

• Maximum current values of phases I

I

• Maximum value (MAXmax) of all phase currents

• Minimum current values of phases I

min

• Minimum value (MINmin) of all phase currents

• Average current I

• Maximum average current value I

• Minimum average current value I

MicroLogic 6

• Ground-fault current measurement

• Maximum/minimum value of the ground-fault current

• Current phase unbalance measurements I

• Maximum values of current phase unbalances I

I

• Maximum value (MAXmax) of all phase unbalances

NOTE:

• The unbalance values are signed (relative values).

• The unbalance maximum values (max) are not signed (absolute

values).

• Phase-to-phase V

voltage measurements

• Maximum values of phase-to-phase voltages V

V V

• Maximum value of the maximum phase-to-phase voltages (V

V

• Minimum values of phase-to-phase voltages V

V V

• Minimum value of the minimum phase-to-phase voltages (V

V

• Average voltage measurements V

• Maximum value of average values V

• Minimum value of average values V

, IB, IC, and neutral IN current measurements

A

N max

measurements

avg

C unbal max

, VBC, VCA, and phase-to-neutral VAN, VBN, VCN

AB

L-L, and phase-to-neutral voltages V

CA max

L-N

CN max

)

CA

L-L, and phase-to-neutral voltages VAN

CA min

L-N

CN min

)

CA

avg max

avg min

avg

, IB

A max

, IB

A min

L-L and V

avg max

avg min

, IC

max

, IC

min

, I

A unbal

B unbal

A unbal max

AB max

AN max

AB min

min

L-N

avg

L-L and V

, and the neutral

, and neutral IN

min

, I

C unbal

, I

B unbal max

L-L, V

BC max

L-N, V

BN max

AB

L-L, VBC

L-N, V

avg min

BN min

avg max

min

AB

L-N

L-L,

L-N,

, VBC,

L-L,

L-N,

, VBC,

A 0–20 I

% I

,

% I

V 0–850 V +/- 0.5% 70–850 V

Measurement

Range

0–600% — —

g

Measurement

Range

g

avg

0–600% — —

-100–100% +/- 2% -100–100%

Accuracy

+/- 1% 0.2–1.2 In

n

Accuracy

+/- 1% 0.2–1.2 In

n

Accuracy

Range

Accuracy

Range

Continued on next page

64-EN

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 30 – MicroLogic E Real-Time Measurements (continued)

Item Measurement Unit

Voltage Unbalance Metering

The accuracy range is for the voltage range: 70–850 V

, VBN, VCN

(V

AN

with ENVT option only)

Power Metering The accuracy

range is for:

• Current

range: 0.1–

1.2 I

n

• Voltage

range: 70– 850 V

• Cos φ range:

-1 to -0.5 and 0.5 to 1

• Phase-to-phase voltage V

phase-to-neutral voltage V unbalance measurements

• Maximum values of phase-to-phase voltage unbalances V

V

BC unbal max

unbalances V

• Maximum values (MAXmax) of all phase-to-phase and phase-to-neutral

L-L, V

CA unbal max

AN unbal max

L-L, V

voltage unbalances

Note:

• The unbalance values are signed (relative values).

• The unbalance maximum values (max) are not signed (absolute values).

Only with ENVT option

• Active power measurements for each phase P

• Maximum values of active powers for each phase P

• Minimum values of active powers for each phase P

• Total active power measurement P

• Maximum value of total active power P

• Minimum value of total active power P

• Only with ENVT option Reactive power measurements for each phase Q

QB, QC

• Maximum values of reactive powers for each phase Q

Q

C max

• Minimum values of reactive powers for each phase Q

• Total reactive power measurement Q

• Maximum value of total reactive power Q

• Minimum value of total reactive power Q

Only with ENVT option

• Apparent power measurements for each phase S

• Maximum values of apparent powers for each phase S

S

C max

• Minimum values of apparent powers for each phase S

• Total apparent power measurement S

• Maximum value of total apparent power S

• Minimum value of total apparent power S

Only with ENVT option

• Fundamental reactive power measurements for each phase Qfund

• Maximum values of fundamental reactive powers for each phase Qfund

• Minimum values of fundamental reactive powers for each phase Qfund

• Total fundamental reactive power measurement Qfund

• Maximum value of total fundamental reactive power Qfund

• Minimum value of total fundamental reactive power Qfund

Qfund

, Qfund

max

, Qfund

min

, QfundC

B

B max,

B min

Qfund

, Qfund

C max

C min

Only with ENVT option

• Distorting power measurements for each phase D

• Maximum values of distorting powers for each phase D

D

C max

• Minimum values of distorting powers for each phase D

D

C min

• Total distorting power measurement D

• Maximum value of total distorting power D

• Minimum value of total distorting power D

AB unbal

AN unbal

L-L, V

L-N, V

BC unbal

BN unbal

L-L, V

L-N, V

L-L, and phase-to-neutral voltage

tot max

tot min

tot

tot max

tot min

tot

L-L, V

tot max

tot min

CN unbal max

, PB, PC

A

A max

A min

, SB, S

A

BN unbal max

tot

CA unbal

CN unbal

AB unbal max

, PB

min

, QB

A max

, QB

A min

C

, SB

A max

, SB

A min

tot

tot min

, DB, DC

, DB

A max

A min

L-L, and L-N

L-L

, P

max

, PC

max

, QC

min

max

min

tot max

max

, D

B min

C max

min

,

, S

,

A

L-L,

min

C min

A

,

%V

avg

%V

avg

kW -1000–1000 kW +/- 2%

kW -3000–3000 kW +/- 2%

,

A

kvar

kVA

kvar -100–1000 kvar +/- 2%

A

kvar

Measurement

Range

L-L

-100–100% +/- 1% 100–100%

L-N

-1000–1000 kvar

-3000–3000 kvar

-1000–1000 kVA

-3000–3000 kVA

-3000–3000 kvar

-1000–1000 kvar

-3000–3000 kvar

Accuracy

+/- 2%

Accuracy

Range

ENGLISH

-1000 to -1 kW

1 to 1000

kW

-3000 to -3 kW

3 to 3000

kW

-1000 to -1

kvar 1 to

1000 kvar

-3000 to -3

kvar 3 to

3000 kvar

-1000 to -1

kVA 1 to

1000 kVA

-3000 to -3

kVA 3 to

3000 kVA

-1000 to -1

kvar 1 to

1000 kvar

-3000 to -3

kvar 3 to

3000 kvar

-1000 to -1

kvar 1–

1000 kvar

-3000 to -3

kvar 3–

3000 kvar

65-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 3—Metering Function

Table 30 – MicroLogic E Real-Time Measurements (continued)

ENGLISH

Item Measurement Unit

Operating Indicators

Energy Quality Indicators

The accuracy range is for:

• Current

range: 0.1–

1.2 I

n

• Voltage

range: 70– 850 V [THD(V THD(VBN), THD(V with ENVT option only]

Operating quadrant measurement N/A 1, 2, 3, 4 N/A N/A Direction of phase rotation measurement N/A 0. 1 N/A N/A Type of load measurement (leading/lagging) N/A 0. 1 N/A N/A Measurement of:

• Power factors PF

, PFB, PFC, and cos φA, cos φB, cos φC for each phase

A

Only with ENVT option

• Total power factor PF and cos φ

Maximum values

• Per phase of power factors PF



cos

Bmax

, cos 

Cmax

Amax

, PF

Bmax

, PF

Cmax

, and cos 

Amax

Only with ENVT option

• Of the power factor PF

and cos 

max

Minimum values:

• Of the power factors PF

cos φ

for each phase

C min

A min

, PF

B min

, PF

C min

, and cos φ

A min

, cos φ

Only with ENVT option

• Of the total power factor PF

• Measurement of the total harmonic current distortion THD for each phase

• Maximum values of the total harmonic current distortion

• Total harmonic current distortion THD for each phase THD(I

),

AN

• Measurement of the total harmonic phase-to-phase voltage THD(V

)

CN

• Maximum values of the total harmonic phase-to-phase voltage

), THD(IB), THD(IC)

THD(I

A

THD(IB)

THD(V THD(V

THD(V neutral voltage THD(V

, THD(IC)

min

) L-L, THD(VCA) L-L and phase-to-neutral voltage THD(VAN) L-N,

BC

) L-N, THD(VCN) L-N distortion

BN

L-L, THD(VBC)

AB)max

min

distortion

• Minimum values of the total harmonic phase-to-phase voltage

THD(V neutral voltage THD(V

L-L, THD(VBC)

AB)min

N distortion

• Frequency measurement

• Maximum frequency

• Minimum frequency

min

AN) max

L-N, THD(VBN)

AN)min

and cos φ

max

L-N, THD(VBN)

L-L, THD(VCA)

min

L-L, THD(VCA)

L-L and phase-to-

max

L-N, THD(VCN)

max

L-L and phase-to-

min

L-N, THD(VCN)

min

A)min

,

AB

max

min

,

B min

) L-L,

L-N

L-

,

% Ifund 0–>1000% +/- 10% 0–500%

%Vfund L-

Measurement

Range

Accuracy

— -1.00–1.00 +/- 2%

L

0–>1000% +/- 5% 0–500%

N

Hz 15–440 Hz +/- 0.2% 45–65 Hz

Accuracy

Range

-1.00 to -

0.50 0.50 to

1.00

66-EN

Section 3—Metering Function MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 31 – MicroLogic E Demand Value Measurements

Item Measurement Unit

Current Demand and Peak Values

Power Demand The accuracy range is:

• Current range: 0.1–1.2 I

• Voltage range: 70–850 V

• Cos φ range: -1 to -0.5

and 0.5 to 1

• Phase (I

with ENCT option

I

N

• Demand value of the total active power (P

• Total active power peak value P

• Demand value of the total reactive power (Q

n

• Total reactive power peak value (Q

• Demand value of the total apparent power (S

• Total apparent power peak value (S

, IB, IC) and neutral (IN) current demand values

A

, IB, IC) and neutral (IN) peak current values

A

)

tot

)

tot

)

tot

)

tot

)

tot

kW 0–3000 kW +/- 2%

kvar 0–3000 kvar k+/- 2%

kVA 0–3000 kVA +/- 2%

Table 32 – MicroLogic E Energy Metering

Item Measurement Unit

Energy Meters The accuracy range is:

• Current range: 0.1–1.2 I

• Voltage range: 70–850 V

• Cos φ range: -1 to -0.5 and 0.5

n

to 1

• Active energy measurements: E

supplied, and E

• Reactive energy measurements: E

supplied, and E

• Apparent energy measurement E

Out consumed

p

Out consumed

q

p

, EpIn

, EqIn

q

s

kWh then MWh

kvarh then Mvarh

kVAh then MVAh

Measurement Range

1 kWh–> 1000 TWh +/- 2%

1 kvarh–> 1000 Tvarh +/- 2%

1 kVAh–> 1000 TVAh +/- 2%

Measurement

Range

Accuracy

Range

A 0–20 In +/- 1.5% 0.2–1.2 In

3–3000

kW

3–3000

kvar

3–3000

kVA

Accuracy

Range

1 kWh–

1000 TWh

1 kvarh–

1000 Tvarh

1 kVAh–

1000 TVAh

ENGLISH

67-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 4—Alarms

Section 4— Alarms

ENGLISH

Alarms Associated with Measurements

MicroLogic 5 and 6 trip units monitor measurements using:

• One or two pre-alarms (depending on the type of trip unit) assigned to:

Alarm Setup

— Long-time protection (PAL I — Long-time protection (PAL I

MicroLogic 6 trip unit

By default, these alarms are active.

• Ten alarms defined by the user as required. The user assigns each of these alarms to a measurement.

By default, these alarms are not active.

All the alarms associated with measurements are accessible:

• Using the communication network

• On the Front Display Module (FDM121) (see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker—User Guide).

The alarms associated with measurements can be assigned to an SDx Module output (see “Setting the SDx Outputs” on page 93).

Select user-defined alarms selected and set their functions using the RSU software under the Alarms tab (see “Alarm Setup” on page 84).

Alarm setup consists of:

• Selecting the alarm priority level

• Setting the alarm activation thresholds and time delays

) for the MicroLogic 5 trip unit

r

) and ground-fault protection (PAL Ig) for the

r

Alarm Priority Level

68-EN

The alarm description tables indicate for each of the alarms:

• The setting range (thresholds and time delays)

• The default setting values See “Tables of Alarms” on page 72.

Each alarm is assigned a priority level:

• High priority

• Medium priority

• Low priority

• No priority

Alarm indication on the Front Display Module FDM121) depends on the alarm priority level (see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker —User Guide).

The user sets the priority level of each alarm, according to the urgency of the action required.

By default, alarms are medium priority, except for alarms associated with operating indicators which are low priority (see “Tables of Alarms” on page 72).

Section 4—Alarms MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Alarm Activation Conditions

An alarm associated with a measurement is activated when:

• Values rise above the measurement pickup threshold for overvalue conditions

• Values drop below the measurement pickup threshold for undervalue conditions

• Values equal to the measurement pickup threshold for equality conditions

The RSU software predetermines the type of monitoring.

Overvalue Condition

Activation of the alarm on an overvalue condition is determined using two thresholds and two time delays.

Figure 22 – Activation of an Alarm on an Overvalue Condition

SA Pickup threshold TA Pickup time delay SD Dropout threshold TD Dropout time delay 1 Alarm pickup zone

ENGLISH

Undervalue Condition

Activation of the alarm on an undervalue condition is determined using two thresholds and two time delays.

Figure 23 – Activation of an Alarm on an Undervalue Condition

SA Pickup threshold TA Pickup time delay SD Dropout threshold TD Dropout time delay

69-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 4—Alarms

Equality Condition

ENGLISH

The alarm is activated when the associated monitored quantity equals the pickup threshold.

The alarm is deactivated when the associated monitored quantity is different from the pickup threshold.

Alarm activation is determined using the pickup/drop-out thresholds.

Figure 24 – Activation of an Alarm on an Equality Condition (Monitoring of

Quadrant 4)

SA Pickup threshold SD Dropout thresholds 1 Quadrant 4 alarm

pickup zone (shaded)

Management of Time Delays (Overvalue or Undervalue Conditions)

The alarm time delays are managed by two counters that are normally at 0.

For the pickup threshold, the time delay counter is:

• Incremented when the activation condition is fulfilled.

• Decremented if the activation condition is no longer fulfilled (before the end of the pickup time delay). If the deactivation condition is reached, the pickup time delay counter is reset and the dropout time delay counter is incremented.

For the dropout threshold, the same principle is used.

The example curve shows management of the time delay on an overvoltage alarm (code 79, see “Tables of Alarms” on page 72)

The alarm pickup time delay counter trips when the voltage crosses the 500 V threshold. It is incremented or decremented according to the value of the voltage in relation to the threshold.

The alarm dropout time delay counter trips when the voltage drops back below the 420 V threshold.

70-EN

Section 4—Alarms MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

5 s

2 s

Figure 25 – Time Delay on an Overvoltage Alarm

1. Evolution of the voltage

2. Pickup time delay counter at 5 s

3. Dropout time delay counter at 2 s

4. Overvoltage alarm: pickup zone (shaded)

ENGLISH

Alarms on a Trip, Failure, and Maintenance Event

Alarms on a trip, failure, and maintenance event are always active. They can be accessed:

• Using the communication network

• On the Front Display Module (FDM121) (see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker—User Guide)

Certain alarms can be assigned to an SDx Module output using the system software.

Alarm Setup

The functions of alarms on a trip and failure event are fixed and cannot be modified.

Modify the functions of the two maintenance alarms (OF operation overrun counter threshold and Close command overrun threshold) using the RSU software under the Breaker I/O tab.

Alarm Priority Level

Assign each alarm a priority level:

• High priority

• Medium priority

For more details on the use of priority levels, see bulletin DOCA0088EN: FDM121—Display for LV Circuit Breaker—User Guide.

71-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 4—Alarms

Tables of Alarms

ENGLISH

Table 33 – Pre-Alarms

Setting Range Default Setting

Label Code

Default Setting

Pre Alarm Ir (PAL Ir) 1013 Active Medium 40–100% I Pre Alarm I

(MicroLogic 6 trip unit)

(PAL Ig)

g

1014 Active Medium 40–100% I

Table 34 – MicroLogic A User-Defined Alarms

Label Code

Over Current Inst I Over Current Inst I Over Current Inst I Over Current Inst I

A

B

C

N

Ground-Fault Alarm (MicroLogic 6 Trip Unit)

Under Current Inst I Under Current Inst I Under Current Inst I Over Current I

6 Not Active Medium 0.2–10 I

A

7 Not Active Medium 0.2–10 I

B

C

55 Not Active Medium 0.2–10 I

avg

Over I max (A, B,C) 56 Not Active Medium 0.2–10 I Under Current IN 57 Not Active Medium 0.2–10 I Under Current I

60 Not Active Medium 0.2–10 I

avg

Under I min (A, B, C) 65 Not Active Medium 0.2–10 I

1 Not Active Medium 0.2–10 I 2 Not Active Medium 0.2–10 I 3 Not Active Medium 0.2–10 I 4 Not Active Medium 0.2–10 I

5 Not Active Medium 10–100% I

8 Not Active Medium 0.2–10 I

Default Setting

Default

Priority

Default Priority

Thresholds

(Pickup or

Drop-Out)

r

g

Thresholds

(Pickup or

Drop-Out)

Time

Delay

1 s 90% I

Thresholds Time Delay

Pickup Drop-Out Pickup Drop-Out

r

g

85% I

r

g

1 s 1 s

Setting Range Default Setting

Time

Delay

1–3000 s I

n

1–3000 s I

n

1–3000 s I

n

1–3000 s I

n

1–3000 s 40% I

g

1–3000 s 0.2 I

n

1–3000 s 0.2 I

n

1–3000 s 0.2 I

n

1–3000 s I

n

1–3000 s I

n

1–3000 s 0.2 I

n

1–3000 s 0.2 I

n

1–3000 s 0.2 I

n

Thresholds

n

g

n

Time Delay

Pickup Drop-Out

40 s 10 s 40 s 10 s 40 s 10 s 40 s 10 s

40 s 10 s

40 s 10 s 40 s 10 s 40 s 10 s 60 s 15 s 60 s 15 s 40 s 10 s 60 s 15 s 60 s 15 s

Table 35 – MicroLogic E User-Defined Alarms

Setting Range Default Setting

Label Code

Over Current Inst I Over Current Inst I Over Current Inst I Over Current Inst I Ground-Fault Alarm

(MicroLogic 6 Trip Unit) Under Current Inst I

A

B

C

N

A

Default Setting

1 Not Active Medium 0.2–10 I 2 Not Active Medium 0.2–10 I 3 Not Active Medium 0.2–10 I 4 Not Active Medium 0.2–10 I

5 Not Active Medium 10–100% I

6 Not Active Medium 0.2–10 I Under Current Inst IB 7 Not Active Medium 0.2–10 I Under Current inst I Over I Over I Over I

phase A 9 Not Active Medium 5–60% I

unbal

phase B 10 Not Active Medium 5–60% I

unbal

phase C 11 Not Active Medium 5–60% I

unbal

72-EN

C

8 Not Active Medium 0.2–10 I

Default

Priority

Thresholds

(Pickup or Drop-Out)

avg

Time Delay Thresholds

Time Delay

Pickup Drop-Out

n

g

n

1–3000 s I 1–3000 s I 1–3000 s I 1–3000 s I

1–3000 s 40% I

1–3000 s 0.2 I 1–3000 s 0.2 I 1–3000 s 0.2 I

n

g

n

1–3000 s 25% 40 s 10 s 1–3000 s 25% 40 s 10 s 1–3000 s 25% 40 s 10 s

40 s 10 s 40 s 10 s 40 s 10 s 40 s 10 s

40 s 10 s

40 s 10 s 40 s 10 s 40 s 10 s

Continued on next page

Section 4—Alarms MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 35 – MicroLogic E User-Defined Alarms (continued)

Setting Range Default Setting

Label Code

Over Voltage V Over Voltage V Over Voltage V Under Voltage V Under Voltage V Under Voltage V

unbal

V

AN

V

BN

V

CN

Over V Over V Over V

AN

BN

CN

AN

BN

CN

12 Not Active Medium 100–1100 V 1–3000 s 300 V 40 s 10 s 13 Not Active Medium 100–1100 V 1–3000 s 300 V 40 s 10 s 14 Not Active Medium 100–1100 V 1–3000 s 300 V 40 s 10 s 15 Not Active Medium 100–1100 V 1–3000 s 180 V 40 s 10 s 16 Not Active Medium 100–1100 V 1–3000 s 180 V 40 s 10 s 17 Not Active Medium 100–1100 V 1–3000 s 180 V 40 s 10 s 18 Not Active Medium 2%–30% V 19 Not Active Medium 2%–30% V 20 Not Active Medium 2%–30% V

Default Setting

Over total KVA 21 Not Active Medium 1–1000 kVA 1–3000 s 100 kVA 40 s 10 s Over direct KW 22 Not Active Medium 1–1000 kW 1–3000 s 100 kW 40 s 10 s Reverse power KW 23 Not Active Medium 1–1000 kW 1–3000 s 100 kW 40 s 10 s Over direct KVAr 24 Not Active Medium 1–1000 kva 1–3000 s 100 kvar 40 s 10 s Reverse power KVAr 25 Not Active Medium 1–1000 kvar 1–3000 s 100 kvar 40 s 10 s Under total KVA 26 Not Active Medium 1–1000 kVA 1–3000 s 100 kVA 40 s 10 s Under direct KW 27 Not Active Medium 1–1000 kW 1–3000 s 100 kW 40 s 10 s Under direct KVAr 29 Not Active Medium 1–1000 kva 1–3000 s 100 kvar 40 s 10 s

1

Leading PF (IEEE) Lead or Lag PF(IEC)

31 Not Active Medium 0–0.99 1–3000 s 0.80 40 s 10 s

1

33 Not Active Medium 0–0.99 1–3000 s 0.80 40 s 10 s Lagging PF (IEEE)1 34 Not Active Medium -0.99–0 1–3000 s -0.80 40 s 10 s Over THD Current I Over THD Current I Over THD Current I Over THD V Over THD V Over THD V Over THD V Over THD V Over THD V Over Current I

38 Not Active Medium 0–500% 1–3000 s 5% 40 s 10 s

AN

BN

CN

AB

BC

CA

55 Not Active Medium 0.2–10 I

avg

A

B

C

35 Not Active Medium 0–500% 1–3000 s 15% 40 s 10 s

36 Not Active Medium 0–500% 1–3000 s 15% 40 s 10 s

37 Not Active Medium 0–500% 1–3000 s 15% 40 s 10 s

39 Not Active Medium 0–500% 1–3000 s 5% 40 s 10 s

40 Not Active Medium 0–500% 1–3000 s 5% 40 s 10 s

41 Not Active Medium 0–500% 1–3000 s 5% 40 s 10 s

42 Not Active Medium 0–500% 1–3000 s 5% 40 s 10 s

43 Not Active Medium 0–500% 1–3000 s 5% 40 s 10 s

Over I max (A, B, C) 56 Not Active Medium 0.2–10 I Under Current I Under Current I

Demand 61 Not Active Medium 0.2–10.5 In 1–3000 s 0.2 In 60 s 15 s

Over I

A

57 Not Active Medium 0.2–10 I

N

60 Not Active Medium 0.2–10 I

avg

Over IB Demand 62 Not Active Medium 0.2–10.5 I Over IC Demand 63 Not Active Medium 0.2–10.5 In 1–3000 s 0.2 In 60 s 15 s

Demand 64 Not Active Medium 0.2–10.5 In 1–3000 s 0.2 I

Over I

N

Under I min (A, B, C) 65 Not Active Medium 0.2–10 I Under IA Demand 66 Not Active Medium 0.2–10.5 I

Demand 67 Not Active Medium 0.2–10.5 I

Under I

B

Under I Under I Over I Over Voltage V

Demand 68 Not Active Medium 0.2–10.5 I

C

Demand 69 Not Active Medium 0.2–10.5 I

N

max 70 Not Active Medium 5–60% I

unbal

AB

71 Not Active Medium 100–1100 V 1–3000 s 500 V 40 s 10 s

Default

Priority

Thresholds

(Pickup or Drop-Out)

1–3000 s 10% 40 s 10 s

avg

1–3000 s 10% 40 s 10 s

avg

n

avg

Time Delay Thresholds

Time Delay

Pickup Drop-Out

1–3000 s 10% 40 s 10 s

1–3000 s I 1–3000 s I 1–3000 s 0.2 I 1–3000 s 0.2 I

n

1–3000 s 0.2 In 60 s 15 s

n

1–3000 s 0.2 I 1–3000 s 0.2 I

n

1–3000 s 0.2 In 60 s 15 s 1–3000 s 0.2 I 1–3000 s 0.2 I

n

1–3000 s 25% 40 s 10 s

60 s 15 s 60 s 15 s 40 s 10 s 60 s 15 s

60 s 15 s 60 s 5 s 60 s 15 s

60 s 15 s 60 s 15 s

Continued on next page

ENGLISH

73-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 4—Alarms

Table 35 – MicroLogic E User-Defined Alarms (continued)

ENGLISH

Label Code

Over Voltage V Over Voltage V Over Voltage V Under Voltage V Under Voltage V Under Voltage V

BC

CA

L-N 75 Not Active Medium 100–1100 V 1–3000 s 300 V 5 s 2 s

avg

AB

BC

CA

72 Not Active Medium 100–1100 V 1–3000 s 500 V 40 s 10 s 73 Not Active Medium 100–1100 V 1–3000 s 500 V 40 s 10 s

76 Not Active Medium 100–1100 V 1–3000 s 320 V 40 s 10 s 77 Not Active Medium 100–1100 V 1–3000 s 320 V 40 s 10 s 78 Not Active Medium 100–1100 V 1–3000 s 320 V 40 s 10 s

Default Setting

Over V max L-L 79 Not Active Medium 100–1100 V 1–3000 s 300 V 5 s 2 s Under Voltage V

L-N 80 Not Active Medium 100–1100 V 1–3000 s 180 V 5 s 2 s

avg

Under V min L-L 81 Not Active Medium 100–1100 V 1–3000 s 180 V 5 s 2 s Over Vunb max L-N 82 Not Active Medium 2%–30% V Over V Over V Over V

V

unbal

AB

V

unbal

2B

VCA 88 Not Active Medium 2%–30% V

unbal

86 Not Active Medium 2%–30% V 87 Not Active Medium 2%–30% V

Over Vunb max L-L 89 Not Active Medium 2%–30% V Phase sequence 90 Not Active Medium 0.1 N/A 0 N/A N/A Under Frequency 92 Not Active Medium 45–65 Hz 1–3000 s 45 Hz 5 s 2 s Over Frequency 93 Not Active Medium 45–65 Hz 1–3000 s 65 Hz 5 s 2 s Over KW Power dmd 99 Not Active Medium 1–.1000 kW 1–3000 s 100 kW 40 s 10 s

1

Leading cos  (IEEE) Lead, Lag cos  (IEC) Lagging cos  (IEEE)

Peak Demand 141 Not Active Medium 0.2–10.5 I

Over I

A

121 Not Active Medium 0–0.99 1–3000 s 0.80 40 s 10 s

1

123 Not Active Medium 0–0.99 1–3000 s 0.80 40 s 10 s

1

124 Not Active Medium -0.99–0 1–3000 s -0.80 40 s 10 s

Over IB Peak Demand 142 Not Active Medium 0.2–10.5 I

Peak Demand 143 Not Active Medium 0.2–10.5 I

Over I

C

Peak Demand 144 Not Active Low 0.2–10.5 I

Over I

N

Lead 145 Not Active Low 0.0 1–3000 s 0 40 s 10 s Lag 146 Not Active Low 1.1 1–3000 s 1 40 s 10 s Quadrant 1 147 Not Active Low 1.1 1–3000 s 1 40 s 10 s Quadrant 2 148 Not Active Low 2.2 1–3000 s 2 40 s 10 s Quadrant 3 149 Not Active Low 3.3 1–3000 s 3 40 s 10 s Quadrant 4 150 Not Active Low 4.4 1–3000 s 4 40 s 10 s

1

The type of alarms associated with monitoring the cos  and PF indicators must always be consistent with the sign convention (IEEE or IEC) for the PF indicator.

Default Priority

(Pickup or Drop-Out)

Setting Range Default Setting

Thresholds

avg

n

Time Delay Thresholds

1–3000 s 10% 40 s 10 s 1–3000 s 10% 40 s 10 s

1–3000 s 10% 40 s 10 s

1–3000 s 10% 40 s 10 s 1–3000 s 10% 40 s 10 s

1–3000 s I 1–3000 s I 1–3000 s I 1–3000 s In 60 s 15 s

n

Time Delay

Pickup Drop-Out

60 s 15 s 60 s 15 s 60 s 15 s

74-EN

Section 4—Alarms MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 36 – Event Alarms

Alarm Type Label Code SDx Output Priority

Alarms on a Trip Event

Alarms on a Failure Event

Alarms on a Maintenance Event

Long-time prot I Short-time prot I Instant prot I Ground fault I Integ instant prot 16390 No High Trip unit fail (Stop) 16391 Yes High Instant vigi prot 16392 No High Reflex tripping 16393 No High Trip indicator SD 1905 Yes Medium BSCM failure (Stop) 1912 Yes High BSCM failure (Err) 1914 Yes Medium OF operation overrun 1916 Yes Medium Close command overrun 1919 Yes Medium

r

sd

i

g

16384 Yes High 16385 Yes High 16386 Yes High 16387 Yes High

Operation of SDx Module Outputs Assigned to Alarms

Two alarms can be assigned to the two SDx Module outputs.

Set up the two outputs using the RSU software (Outputs tab). They are activated (or deactivated) by the occurrence (or completion) of:

ENGLISH

• An alarm associated with a measurement (see “Alarms Associated with Measurements” on page 68)

• An alarm on a trip, failure, and maintenance event (see“Alarms on a Trip, Failure, and Maintenance Event” on page 71)

For more details on the SDx Modules, see the PowerPact™ H-, J-, and L-Frame Circuit Breaker—User Guide.

SDx Module Output Operating Modes

Set the operating mode for the SDx Module outputs as:

• Non-latching mode

The output (S) position follows the associated alarm (A) transitions.

• Latching mode

The position of the output (S) follows the active transition of the associated alarm (A) and remains latched irrespective of the alarm state.

• Time-delayed non-latching mode

The output (S) follows the activation transition for the associated alarm (A). The output returns to the deactivated position after a time delay irrespective of the alarm state.

The setting range for the time delay (using the RSU software) is 1–360 s. The default time delay setting is 5 seconds.

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MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 4—Alarms

• Open or closed forced mode

ENGLISH

— In open forced mode, the output remains in the deactivated position

irrespective of the alarm state.

— In closed forced mode, the output remains in the activated position

irrespective of the alarm state.

NOTE: Both these modes can be used for debugging or checking an electrical installation.

Operation in Non-Latching Mode

Operation in Latching Mode

A Alarm:

Shaded when activated

Operation in Time-Delayed Non-Latching Mode

White when deactivated

S Output:

High position = activated

Low position = deactivated 1 Alarm activation transition 2 Alarm deactivation transition

Acknowledgment of Latching Mode

Acknowledge the Latching Mode using the MicroLogic trip unit keypad by pressing the Special Features of Latching Mode

If the acknowledge request is made when the alarm is still active:

• Acknowledgment of the output active position has no effect.

• Keypad navigation is possible.

• The screensaver returns to the Out1 message.

If two alarms associated with two outputs in latching mode are active:

• The first alarm message Out1 (or Out2) is displayed on the screen until the alarm is acknowledged (the output’s active position is acknowledged after the alarm is deactivated).

• After acknowledgment of the first alarm, the screen displays the second alarm message Out2 (or Out1) until the second alarm is acknowledged.

• After both acknowledgments, the display returns to the screensaver.

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Section 4—Alarms MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

A Alarm:

Green when activated White when deactivated

S Output:

High position = activated

Step Event/Action

1 Alarm activation “Out1” is displayed. 2 Alarm deactivation “Out1” is still displayed.

Confirm active position of

3

the output (press the key twice to confirm)

4 –

Display Information

“OK” is displayed.

The screensaver is displayed.

ENGLISH

77-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 5—Remote Setting Utility (RSU) Software

WARNING

Section 5— Remote Setting Utility (RSU) Software

ENGLISH

Function Setting

The Remote Setting Utility (RSU) software works with MicroLogic trip units to:

• Check and configure:

— Metering functions — Alarms — Assignment of the SDx Module outputs — BSCM functions — Modbus™ Interface Module

• Modify passwords

• Save configurations

• Edit configurations

• Display trip curves

• Download the firmware

In the context of this manual, only the functions relating to setup of the MicroLogic trip unit and the SDx Modules are described. For more information about functions, in particular configuring the BSCM option, the Modbus communication interface option, and passwords, see the RSU Software Online Help.

Using the RSU Software

POTENTIAL COMPROMISE OF SYSTEM AVAILABILITY, INTEGRITY, AND CONFIDENTIALITY

• Change default passwords at first use to help prevent unauthorized access to device settings, controls and information.

• Disable unused ports/services and default accounts to help minimize pathways for malicious attackers.

• Place networked devices behind multiple layers of cyber defenses (such as firewalls, network segmentation, and network intrusion detection and protection.

• Use cybersecurity best practices (for example, least privilege, separation of duties) to help prevent unauthorized exposure, loss, modification of data and logs, or interruption of services.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

The RSU software can be used:

• In standalone mode, directly on the MicroLogic trip unit using the test port, a standard computer, and the UTA tester.

• Using the communication network

78-EN

For more details, see the RSU Software Online Help.

Section 5—Remote Setting Utility (RSU) Software MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

User Profiles

Two different user profiles are available in the RSU software: Commissioning and Schneider Service.

Offline Mode

Online Mode

• The Commissioning profile is the default profile when you start the RSU software. This profile does not need a password.

• The Schneider Service profile allows the same access as the Commissioning profile plus the firmware updates, and password resets. Download firmware from www.schneider-electric.com.

To download RSU test software (LV4ST100):

• go to www.schneider-electric.com and do a search for LV4ST100.

• Click on LV4ST100, then click Software/Firmware under Downloads menu, then download.

Use offline mode to configure the protection, metering, and alarm functions of the MicroLogic trip unit in the RSU software.

For more details on offline mode, see the RSU Software Online Help.

Use online mode to:

• Perform the same configurations as offline mode

• Download information from or to the MicroLogic trip unit

For more details on online mode, see the RSU Software Online Help.

ENGLISH

Two buttons located on the right of the screen activate the data transfer.

1. Button for downloading information from the trip unit to the computer

2. Button for downloading information from the computer to the trip unit

1

2

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MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 5—Remote Setting Utility (RSU) Software

Software Configuration Tabs

ENGLISH

Access the RSU software configuration functions using different tabs.

Tab Description Functions

Metering Configuring the metering functions (MicroLogic E)

Basic Protection Setting the Protection Functions

Alarm Configuring pre-alarms and the ten user-defined alarms

SDx Outputs Assignment of the two SDx outputs

Passwords Configuring four password levels of the BSCM

• Counters for OF operations and actions on SD and SDE faults

• Alarm threshold associated with the OF counter

BSCM Option

Modbus Interface Option

• Communicating motor mechanism: Close command counter

• Communicating motor mechanism: Configuring the motor

reset command

• Communicating motor mechanism: Alarm threshold

associated with the close command counter

• Reading Modbus™ addresses

• Communication functions setup

The Basic prot. tab is the default display when the user starts RSU.

A blue pictogram indicates which tab is active. For example, this pictogram indicates that the Basic prot. tab is the active

tab.

In the figure below, the user has manually selected a MicroLogic 6.2.E trip unit (offline mode). The Basic Protection screen displays a reproduction of the front face of the MicroLogic trip unit and its protection settings.

1

2

4

3

80-EN

1. MicroLogic selection windows

2. Accessible function tabs

3. Protection settings

4. Reproduction of the front face of the MicroLogic trip unit

Section 5—Remote Setting Utility (RSU) Software MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Saving and Printing

The different settings and data can be saved and printed.

Protection Functions

Access the protection function settings using the RSU software under

Setting the Protection Functions

The RSU software screen is the same as the front face of the trip units. The setting and navigation principles are identical to those described in “Readout Mode” on page 14 and “Setting Mode” on page 23.

NOTE: Access to the settings is only possible when the padlock is unlocked (for more information about unlocking the padlock, see “Navigation Principles” on page 13).

ENGLISH

(default tab).

Presetting the Protection Functions by a Dial

When a protection function is preset by a dial, the dial on the MicroLogic trip unit and the virtual dial in the RSU software have to be in an identical position.

81-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 5—Remote Setting Utility (RSU) Software

Sliding

Metering Setup

ENGLISH

Access the metering setup settings using the RSU software under the

tab.

Description Screen Action

ENVT Option Setup (Screen Action Device)

Power Setup

Provides the choice of power sign in the Services tab:

Demand Values Setup

Check the declaration box for the ENVT option in the Metering setup/External Neutral Voltage Tap window.

For a description of the content of Modbus™ 3314 register, see the

Modbus™ PowerPact™ H-, J-, and L-Frame Circuit Breaker User Manual.

NOTE: Set the ENCT option directly on the MicroLogic trip unit screen or using the RSU software under the Basic prot tab.

In the Metering setup/Power sign window, select the power sign:

• + The power running through the circuit breaker from top to

bottom is counted positively.

• - The power running through the circuit breaker from bottom to

top is counted negatively.

The default value of the powersign is +.

Use the two drop-down menus to set the functions for calculating the power demand value in the Power demand window:

• Select the type of calculation window in the Window type drop-

down menu: fixed window, sliding window, synchronized window.

• Indicate the duration of the calculation window using the scroll

bars in the Interval drop-down menu. The duration can be 5 to 60 minutes in increments of 1 minute.

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Section 5—Remote Setting Utility (RSU) Software MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Sliding

In the Current demand/Interval window indicate the duration of the calculation window using the scroll bars in the Interval drop-down

Current Demand Setup

Quality Indicator

Energy Accumulation Mode Setup

menu: the duration can be from 5 to 60 minutes in increments of 1 minute.

The calculation window type must be sliding window.

Sets the cos  and power factor (PF) indicators in the Setup Services tab:

Select the sign convention in the Power factor sign window. The default setting for the sign convention is the IEEE convention.

To set up the energy accumulation mode in the Services tab: Select the energy accumulation mode in the Energy Accu Mode

window.

• Absolute energy: The energies supplied and consumed are

counted positively.

• Signed energy: The energy supplied is valued negatively, the

energy consumed is valued positively.

The default setting for the energy accumulation mode is absolute energy mode.

ENGLISH

83-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 5—Remote Setting Utility (RSU) Software

Alarm Setup

ENGLISH

Access the alarm selection and setup using the RSU software under the

tab.

Activating an Alarm

Setting Alarm Functions

For more details on the list of alarms, the setting ranges and default settings, see “Tables of Alarms” on page 72.

1

2

1. Alarm already activated and set up

2. List of possible alarm assignments

3. Alarm functions

1. Select none for a free assignment, for example the first available line on the Alarms tab screen.

2. Double-click none; the Alarm setup selection and setting screen appears:

3. Select the alarm to activate from the dropdown menu in the Alarm setup screen.

4. Once the alarm has been selected: —If the default setting is correct, click OK (the alarm is activated in the drop-down menu of assignments with the default functions)

—To modify the default setting, set the alarm functions.

1. Set the priority level in the Priority window using the scroll bar (four options).

2. Set the pickup threshold value and time delay (if present) in the Pick up/value and Pick up/delay windows using the scroll bars.

3. Set the dropout threshold value and time delay (if present) in the Drop out/value and Drop out/delay windows using the scroll bars.

4. Confirm the setting by clicking OK. The alarm is activated in the drop-down menu of assignments with its priority level and the values of its activation and deactivation functions)

3

Alarm Setup Screen

1 2

3

1. Alarm Name

2. Alarm Code

3. Activation functions (pickup and time delay)

4. Deactivation functions (drop-out and time delay)

5. Priority Level

For functions with a wide setting range, there are two scroll bars:

• Left scroll bar for presetting

• Right scroll bar for fine-tuning

Unless set, functions remain at their default value (except when the RSU software must modify the value to avoid a setting conflict).

5 4

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Section 5—Remote Setting Utility (RSU) Software MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

1. Double-click the alarm in the list in the Alarms

tab (1).

2. Modify the functions in the drop-down menu in

the Alarm setup screen.

Modifying an Alarm

Deleting an Alarm

3. Set the dropout threshold value and time

delay (if present) in the Drop out/value and Drop out/delay windows using the scroll bars.

4. Confirm by clicking OK (the new alarm

functions appear in the right side of the dropdown menu).

1. Double-click the alarm in the Alarms tab.

2. Select none from the drop-down menu in the

Alarm setup screen.

3. Confirm by clicking OK (none appears in

place of the alarm in the drop-down menu).

1

Setting the SDx Module Output Functions

All alarms on a trip, failure, and maintenance event and all alarms associated with a measurement, previously activated in the Alarms tab, can be assigned to an SDx Module output.

ENGLISH

Access the SDx Module output settings using the RSU software under the Output tab .

85-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 5—Remote Setting Utility (RSU) Software

06113744

ENGLISH

Default Assignment of the SDx Module Outputs

Outputs Tab for MicroLogic 6 Trip Unit

• MicroLogic 5 trip unit:

— Output 1 is the thermal fault indication (SDT). — Output 2 is the long-time pre-alarm (PAL I

• MicroLogic 6 trip unit:

— Output 1 is the thermal fault indication (SDT) for electrical distribution applications. — Output 1 is None for motor-feeder applications.

• — Output 2 is the ground-fault indication (SDG).

1. Select Output Setup Window Double-click the output (Out1 or Out2) to be assigned. An Output setup window appears.

).

r

Assignment of an Alarm to an SDx Module

2. Select Alarm

Select the alarm to assign to the output from the Alarm drop-down menu in the Output setup window. The drop-down menu contains all the alarms on a trip, failure, and maintenance event and the alarms associated with measurements activated in the Alarms

3. Select Operating Mode

If necessary, select the output operating mode from the Mode drop-down menu. If necessary, set the time delay.

86-EN

Section 6—MicroLogic Trip Unit Indicators MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Section 6— MicroLogic Trip Unit Indicators

LED Indication

Local Indicator

Operation of the Ready LED

The Ready LED (green) blinks slowly when the electronic trip unit is ready to provide protection. It indicates that the trip unit is operating correctly.

NOTE: The Ready LED lights at a value equal to the sum of the circuit breaker currents for each phase and the neutral above a limit value. This limit value is above the Ready LED, on the front face of the MicroLogic trip unit.

For example, a MicroLogic 5.2 trip unit with a 40 A rating has a limit value of 15 A. This limit value can be:

• The sum of the 5 A phase current intensities (three balanced phases)

• 7.5 A in two phases (the current intensity in the third phase is zero)

• 5 A in one phase if the circuit breaker is:

LEDs LED Description

1. Ready LED (green) blinks slowly when the electronic trip unit is ready to provide protection.

2. Overload pre-alarm LED (orange) lights when the load exceeds 90% of

setting.

the I

r

1

2

3. Overload alarm LED (red) lights when the load exceeds 105% of the Ir

3

setting.

— Installed with distributed neutral — Only has one loaded phase on a single-phase load. (The current in the

other two phases is zero.)

ENGLISH

87-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 6—MicroLogic Trip Unit Indicators

105% I

r

90% I

r

T

t

I

Operation of Pre-Alarm and Alarm LEDs

ENGLISH

(Electrical Distribution Protection)

The pre-alarm (orange LED) and alarm (red LED) indications trip as soon as the value of one of the phase currents exceeds 90% and 105% respectively of the I pickup setting:

• Pre-alarm Exceeding the pre-alarm threshold at 90% of I protection.

• Alarm Crossing the alarm threshold at 105% of I (see “Long-Time Protection” on page 31) with a trip time delay that depends on: — The value of the current in the load — The setting of the time delay t

r

has no effect on the long-time

r

activates the long-time protection

r

1. Current in the load (most heavily loaded phase)

2. Thermal image calculated by the trip unit

NOTE: If the pre-alarm and alarm LEDs keep lighting up, carry out load shedding to avoid tripping due to a circuit breaker overload.

Indication on the MicroLogic Display

Indication screens indicate the status of the installation.

When a number of screens arrive simultaneously, they stack according to their criticality level:

• Configured (alarms: high, medium, low, or no priority)

• Pre-defined (trip and failure events: high or medium priority)

Stacking Screens

Table 37 – Screen Stacking

Criticality Screen

0-None Main screen 1 Outx alarm screen 2 Err internal failure screen 3 Stop internal fault screen 4-High Trip screen

Example:

An alarm on a voltage measurement Outx, then an internal failure Err occurred:

• The screen displayed is the internal failure Err screen (Criticality = 2).

• After acknowledging the internal failure Err screen, the alarm Outx screen is displayed (Criticality = 1).

• After acknowledging the internal failure Outx screen, the main screen displayed (Criticality = 0).

is

88-EN

Section 6—MicroLogic Trip Unit Indicators MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

DANGER

CAUTION

Indication Screens Cause and Response

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• If the trip unit displays a Stop screen replace the MicroLogic trip unit

immediately.

• If trip unit displays a fault screen, do not close the circuit breaker again without

inspecting and, if necessary, repairing the downstream electrical equipment.

• Apply appropriate personal protective equipment (PPE) and follow safe

electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS or local equivalent

• This equipment must be installed and serviced only by qualified electrical

personnel.

• Turn off all power supplying this equipment before working on or inside

equipment.

• Always use a properly rated voltage sensing device to confirm power is off.

• Replace all devices, doors, and covers before turning on power to this

equipment.

Failure to follow these instructions will result in death or serious injury.

HAZARD OF INCORRECT INFORMATION

ENGLISH

If the trip unit displays an Err screen, replace the MicroLogic trip unit at the next regular maintenance.

Failure to follow this instruction can result in injury or equipment damage.

The fact that a protection has tripped does not remedy the cause of the fault on the downstream electrical equipment.

1. Isolate the feed before inspecting the downstream electrical equipment.

2. Look for the cause of the fault.

3. Inspect and, if necessary, repair the downstream equipment.

4. Inspect the equipment in the event of a short-circuit trip.

5. Close the circuit breaker again.

For more information about troubleshooting and restarting following a fault, see the manual shipped with the circuit breaker.

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MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 6—MicroLogic Trip Unit Indicators

OK

Table 38 – Indication Screens

ENGLISH

Indication Cause Response Screen

I phase 2

Ir tr Isd tsd Ii(x In)

Indication of Correct Installation Operation

Indication of an Internal Fault of the MicroLogic Trip Unit

Indication of an Internal Failure of the MicroLogic Trip Unit

Alarm Indication

Circuit breaker with SDx Module option

Indication of Downloading the Screen Firmware

The main screen displays the current value of the most heavily loaded phase.

A serious internal fault has occurred in the MicroLogic trip unit. This fault trips the circuit breaker.

• It is no longer possible to

close the circuit breaker

• The Mode key cannot access

the measurements and settings

• The St0P screen becomes

the main screen

An internal failure on the MicroLogic trip unit, whether temporary or permanent, has occurred without the circuit breaker tripping.

• The failure does not affect the

trip unit protections.

• The Mode key can access the

measurements and settings

• The Err screen becomes the

main screen if the failure is permanent

• An alarm configured on the

SDx Module in permanent latching mode has not been acknowledged (see “Acknowledgment of Latching Mode” on page 76) or the acknowledgment request is made when the alarm is still active.

The MicroLogic trip unit is waiting for or is downloading the firmware using the RSU software (duration: 3 minutes approx).

• The trip unit protections are

still operational.

• Access to measurements and

settings (using the MicroLogic trip unit dials or keypad, or using the communication

option) is interrupted. If the boot message persists after several download attempts, replace the MicroLogic trip unit.

—

The St0P screen cannot be acknowledged with the key.

Replace the trip unit immediately.

Press the OK key twice:

Validation

Confirmation

The main screen is displayed.

• If the main screen display is

the current value, the trip unit failure was temporary.

• If the main screen display is

the Err screen, the trip unit

failure is permanent Replace the trip unit at the next maintenance interval.

Check the cause of the alarm. Press the OK key twice:

Validation

Confirmation

The main screen (current value of the most heavily loaded phase) is displayed.

For more details on delivery of and downloading the firmware, see Function Setting Using the RSU Software and the RSU Software Online Help.

N 1/A 2/B 3/

Stop

Ir tr Isd tsd Ii(x In)

N 1/A 2/B 3/

Err

Ir tr Isd tsd Ii(x In)

Reset? OK

N 1/A 2/B 3/

Outx

Ir tr Isd tsd Ii(x In)

Reset? OK

N 1/A 2/B 3/

Outx

Ir tr Isd tsd Ii(x In)

N 1/A 2/B 3/

229

St0P

Err

Out1

boot

Continued on next page

A

90-EN

Section 6—MicroLogic Trip Unit Indicators MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Table 38 – Indication Screens (continued)

Indication of Faults with MicroLogic 5 and 6

For more information about definitions of the fault protections associated with indications, see “Protection Functions” on page 29.

Tripped by long-time protection

• Up arrow pointing to Ir

• Breaking value displayed

Tripped by short-time protection:

• Up arrow pointing to Isd

• Breaking value displayed

Tripped by instantaneous protection or reflex protection:

• Up arrow pointing to Ii

• Breaking value displayed

Tripped by integrated instantaneous protection

• Up arrow pointing to Ii

• triP displayed

Press the OK key twice:

OK

Validation

OK

Confirmation

Press the OK key twice:

OK

Validation

OK

Confirmation

Press the OK key twice:

OK

Validation

OK

Confirmation

Press the OK key twice:

OK

Validation

OK

Confirmation

Breaking current I

Ir tr Isd tsd Ii(x In)

Reset? OK

N 1/A 2/B 3/

Peak breaking current I

Ir tr Isd tsd Ii(x In)

Reset? OK

N 1/A 2/B 3/

Peak breaking current I

Ir tr Isd tsd Ii(x In)

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii(x In)

Reset? OK

N 1/A 2/B 3/

r

930

sd

18

i

23

triP

A

ENGLISH

k

MicroLogic 6 Tripped by ground-fault

protection:

• Up arrow pointing to Ig

• triP displayed

Tripped due to lack of ENCT option. Install the ENCT option or connect a jumper between terminals T1 and T2 on the MicroLogic trip unit.

Values According to IEC Convention

The cos φ max value corresponds to the minimum value of the load cos φ, whether leading or lagging. This provides the user information on how the equipment is performing from a cost point of view.

Do not use just the value of cos φ to decide whether to install inductances or capacitors to increase its value.

If a critical situation occurs, the alarm on the cos φ sends an alert according to IEC convention integrated in the MicroLogic trip unit. Use this alarm, associated with an alarm defining the type of load or the operating quadrant, to monitor the two critical situations automatically.

Press the OK key twice:

OK

Validation

OK

Confirmation

Press the OK key twice:

OK

Validation

OK

Confirmation

Ir tr Isd tsd Ii Ig tg

Reset? OK

N 1/A 2/B 3/

Ir tr Isd tsd Ii(x In)

Reset? OK

N 1/A 2/B 3/

triP

Enct

91-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 6—MicroLogic Trip Unit Indicators

Setting the Cos φ Alarms According to IEEE Convention

ENGLISH

Monitor the cos φ indicator to manage the power:

• When the power starts, too high a value of cos φ (lagging), for example higher than – 0.6, results in penalties. The capacitive compensation value determines the value of the Qfund reactive power.

• When the power stops, too low a value of cos φ (leading), for example less than +0.6, results in penalties. Disconnect the capacitive compensation element.

Two alarms monitor the indicators:

• Alarm 124 (monitoring of the lagging cos φ) on an overvalue condition for operation in quadrant 1 (inductive reactive energy consumed)

• Alarm 121 (monitoring of the leading cos φ) on an undervalue condition for operation in quadrant 4 (capacitive reactive energy consumed)

For setting and monitoring the cos software.

φ (codes 121 and 124) according to IEEE convention using the RSU

124 monitoring the lagging cos φ

121 monitoring the leading cos φ

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Section 6—MicroLogic Trip Unit Indicators MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Setting the SDx Outputs

The two alarms defined can each be associated with an SDx Module output (see “Setting the SDx Module Output Functions” on page 85):

• With output Out1, alarm code 124 (monitoring of the lagging cos φ)

• With output Out2, alarm code 121 (monitoring of the leading cos φ)

On starting the power at t2, the load lagging too much activates output Out1 (the output must be configured in permanent latching mode).

The MicroLogic trip unit display shows:

Ir tr Isd tsd Ii(x In)

N 1/A 2/B 3/

Acknowledging the Out1 Screen

The Out1 screen can only be acknowledged if the alarm is no longer active.

After startup of the capacitive compensation, the alarm is no longer active.

Press the OK key twice to acknowledge Out1 output:

OK

Reset? OK

Acknowledge

Confirm

ENGLISH

Out1

93-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 7—The Communication Network

WARNING

Section 7— The Communication Network

ENGLISH

Circuit Breaker Communication

PowerPact™ H-, J, and L-frame circuit breakers with MicroLogic trip units can be integrated into a communication network created using Modbus™ protocol. Use data transmitted by the communication network to provide supervision and monitoring for an installation.

POTENTIAL COMPROMISE OF SYSTEM AVAILABILITY, INTEGRITY, AND CONFIDENTIALITY

Change default passwords at first use to help prevent unauthorized access to device settings, controls and information.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

This communication network offers the options of:

• Reading remotely:

— The circuit breaker status — Measurements — Operating assistance information

• Controlling the circuit breaker remotely

For more information about the Modbus communication network, refer to bulletin 0611IB1302: Modbus Communications Guide.

Remote Readout of the Circuit Breaker Status

Remote readout of the circuit breaker status is accessible by all circuit breakers equipped with a BSCM. The following data is available using the communication network:

• Open/closed position (OF)

• Trip indicator (SD)

• Electrical fault indicator (SDE)

For more information, refer to the bulletin shipped with the circuit breaker.

Remote Readout of the Measurements

Access the measurement readout with MicroLogic 5 and 6 trip units. For more information about measurements, see “Metering Function” on page 44.

Remote Readout of the Operating Assistance Information

94-EN

Access the operating assistance readout with MicroLogic 5 and 6 trip units. The following operating assistance information is available:

• Protection and alarm settings (see “Remote Setting Utility (RSU) Software” on page 78)

• History and tables of time-stamped events (see “History and Time-Stamped Information” on page 95)

• Maintenance indicators (see “Maintenance Indicators” on page 95)

Section 7—The Communication Network MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

Circuit Breaker Remote Control

The circuit breaker remote control is accessible by any circuit breaker with a MicroLogic trip unit, a BSCM, and a communicating motor mechanism. The following commands are available using the communication network:

• Circuit breaker opening

• Circuit breaker closing

• Circuit breaker reset

For more information, refer to the bulletin shipped with the circuit breaker.

History and Time-Stamped Information

History

MicroLogic trip units generate three types of history:

• History of alarms associated with measurements (the last ten alarms are recorded)

• History of trips (the last 18 trips are recorded)

• History of maintenance operations (the last ten operations are recorded)

Time-Stamped Information

ENGLISH

Time-stamped information displays dates for important information such as previous protection settings and minimum/maximum current, voltage, and network frequency values.

The table of time-stamped information describes:

• The previous protection configurations and corresponding dates

• The minimum and maximum voltage measurement values and corresponding dates

• The maximum current measurement values and corresponding dates

• The minimum and maximum network frequencies and corresponding dates

The time when the minimum and maximum values were reset is also available.

Maintenance Indicators

BSCM Counters

The counters embedded in the BSCM generate information relating to the number of volt-free contact operations. These volt-free contacts qualify:

• The number of open/close operations (OF contact) and open on fault operations (SD and SDE contacts) on the PowerPact™ H-, J-, or L-frame circuit breaker

• The number of close, open, and reset operations on the motor mechanism

MicroLogic Trip Unit Counters

Access the maintenance counters embedded in the MicroLogic trip unit with the communication option.

• Counters are assigned to each type of protection:

— Long time protection — Short-time protection — Ground-fault protection

95-EN

MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Section 7—The Communication Network

• Ten counters are assigned to the alarms associated with measurements.

ENGLISH

These counters reset if the alarm is reconfigured.

• One counter indicates the number of operating hours. This counter is updated every 24 hours.

• Four counters are assigned to the load profile: Each counts the number of operating hours per loading section (for example, one counter indicates the number of operating hours for the loading section 50–79% of I

).

n

• Six counters are assigned to the temperature profile. Each counts the number of operating hours per temperature section (for example, one counter indicates the number of operating hours for the temperature section 60–74°C).

• Use maintenance counters to enter quantitative information about operations performed on the MicroLogic trip unit (such as the number of push to trip tests) or the status of the MicroLogic trip units (such as the number of Err screens or protection setting lock/unlock operations).

• One counter indicates the amount of wear on the circuit breaker contacts as a percentage. When this figure reaches 100%, the contacts must be changed.

96-EN

Index MicroLogic™ 5 and 6 Electronic Trip Units—User Guide

A

Adjustable switches. See Switches Alarms 68

activation conditions 69 associated with measurements

68

latching mode 76 overvalue condition 69 priority level 68 SDx module 75 setup 71 setup with RSU software 84 table 72 time delay 70 trip, failure and maintenance

event 71

undervalue condition 69 Average current 45 Average voltage 45

B

BSCM counters 95

C

Communication network 94

BSCM counters 95

circuit breaker 94

circuit breaker remote control 95

circuit breaker remote status 94

history 95

measurements remote readout

94

operating assistance 94

time-stamped information 95

trip unit counters 95 Conductor heat rise and tripping

33

curves Confirmation of setting 24 Cos

measurement minimum and maximum values

62

Current THD 58 Current unbalance 45

60

D

Demand values

calculating 47 fixed metering window 47 measurements 67 metering window 47 models 47 peak demand 48 quadratic demand 48 sliding metering window 48

Dial setting 23 Distortion power 59 Distributed neutral 50

E

Electrical distribution protection 29

ground-fault protection 36

Ig pickup setting 37 inverse time function 37 setting 36 test 37

tg time delay 37 instantaneous protection 35–36 long-time protection 31

Ir pickup 31

setting 31

tr time delay 32 neutral protection 38

ENCT option 39

operation 38

setting 39 protection functions 29 reflex tripping 29 setting 29 short-time protection

inverse time curve 34

Isd pickup 34

setting 34

tsd time delay 34 zone-selective interlocking 41

connection 42

multi-source distribution 42

testing 43

wiring 41

ZSI module 43

ENCT option 39 Energy calculation

principle 53 selection 54

Energy metering 53

energy calculation 53 energy meters 54 Micrologic 6 67 partial energy meters 53 readout 19 resetting 54 resetting energy meters 54 selecting energy calculation 54

F

Fixed metering window 47

G

Graphic display navigation 13 Ground-fault protection 36

Ig pickup setting 37 inverse time function 37 readout 21 setting 36 test 37 tg time delay 37

H

Harmonic currents 55

acceptable levels 56 definition 55 display 56 origin and effects 55

History information 95

I

IEC convention 91 IEEE convention 92 Ig pickup

setting 37

Ii pickup

setting In rating 8 Indication 88

IEC convention 91

IEEE convention 92

Micrologic display 88 Indicators

acknowledgment screens 89

cause screens 89

LED operation 87–88

local indicator LEDs 87

Micrologic display 88

out1 screen 93

trip unit 87 Installation 9 Instantaneous protection

Ii pickup

pickup 35

setting 35

values 44 Inverse time

curve 34

ground-fault 37 Isd pickup 34

36

K

Keypad

setting 23

L

Latching mode alarm 76 LED indication

local indicator

operation 88

87

ENGLISH

48049-312-01

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MicroLogic™ 5 and 6 Electronic Trip Units—User Guide Index

Locking/ unlocking settings 13 Long-time protection 31

ENGLISH

pickup 31 setting 31 trip time 31

M

Maintenance indicators

communication network

Maximum/minimum values 46

resetting 46

Measurements

accuracy 63 remote readout 94

Metering energy quality indicators 58

cos measurement 60 current THD 58 distortion power 59 power factor PF 60 voltage THD 59

Metering function 44

calculating demand values 47 demand value measurements 67 demand values 47 energy metering 53

energy calculation 53 energy meters 54 Micrologic 6 67 partial energy meters 53 selecting energy calculation

54

energy quality indicators 58 fixed metering window 47 harmonic currents 55

acceptable levels 56 definition 55 display 56

origin and effects 55 measurement accuracy 63 metering distortion power 59 metering energy quality indicator

cos measurement 60

current THD 58

power factor PF 60

voltage THD 59 operating quadrant 51 peak demand 48 power metering 49

based on neutral conductor 50

distributed neutral 50

power calculation 51

power supply 51 power sign 51 quadratic demand 48 real-time measurements 44, 64

95

calculating average current 45 calculating average voltage

45

current unbalance 45 instantaneous values 44 maximum/minimum values 46 measuring neutral current 44 measuring voltage 44 resetting maximum/minimum

46

voltage phase unbalance 45 resetting energy meters 54 resetting peak demands 49 sliding metering window 48

Metering screens 15 Metering setup 82 Metering window 47 Mode selection 14

N

Navigation

locking/unlocking settings 13 metering screens 15 mode selection 14 principles 13 trip unit modes 13

Neutral current 44 Neutral protection 38

ENCT option 39 operation 38 setting 39 status readout 22

O

Offline mode 79 Operating assistance remote

readout

94

Operating quadrant 51 Operation

LED indication

87

pre-alarm and alarm LEDs 88

Out1 screen 93 Overvalue condition 69

P

Partial energy meters 53 Peak demand

resetting value 48

Phase-to-neutral voltages 44 Pickup

Ir 31

Power calculation algorithm 51 Power factor PF 60

49

minimum and maximum values

62

Power metering 49

based on neutral conductor 50 distributed neutral 50 operating quadrant 51 power calculation 51 power sign 51

power supply 51 Power sign 51 Power supply 51 Presetting protection functions 27 Priority levels 68 Product name 7 Protection functions

electrical distribution protection

29

presetting 27

readout 22

reflex tripping 29

RSU software 82

setting 28–29

setting screens 25

Q

Quadratic demand value 48

R

Real-time measurements 44, 64

calculating average current 45

calculating average voltage 45

current unbalance 45

instantaneous values 44

maximum/minimum values 46

neutral current 44

resetting maximum/minimum

46

values voltage 44 voltage phase unbalance 45

Reflex tripping 29 Remote circuit breaker status 94 Remote control 95 Remote setting utility software. See

RSU

Resetting

energy meters peak demand values 49

RSU software 78

alarm setup 84 function setting 78 metering setup 82 offline mode 79 saving and printing 81 SDx module setup 85 software configuration tabs 79

54

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48049-312-01

Schneider Electric MicroLogic User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual