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Page 1

PowerPact™ H-, J-, and L-Frame Circuit Breakers with MicroLogic™ Trip Units—User Guide

Interruptores automáticos PowerPact™ marcos H, J y L con unidades de disparo MicroLogic™

Disjoncteur PowerPact déclencheurs MicroLogic

Instruction Bulletin Boletín de instrucciones Directives d'utilisation

48940-313-01

Retain for Future Use. / Conservar para uso futuro. / À conserver pour usage ultérieur.

à châssis H, J ou L avec

™

Page 2

Page 3

PowerPact™ H-, J-, and L-Frame Circuit Breakers with MicroLogic™ Trip Units—User Guide

Class 0611 Instruction Bulletin

48940-313-01 Rev. 02, 01/2020

Retain for future use.

ENGLISH

™

Page 4

PowerPact™ H-, J-, and L-Frame Circuit Breakers with MicroLogic™ 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.

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 an imminently hazardous situation which, if not avoided, will result in death or serious injury.

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

Please Note

FCC Notice

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

NOTICE, used without the safety alert symbol, indicates a potentially hazardous situation which, if not avoided, can result in property damage.

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 designated 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.

Page 5

Table of Contents PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

SECTION 1:PRODUCT INTRODUCTION ..................................................................................................... 7

Circuit Breaker Overview ................................................................................. 7

Circuit Breaker Functions .......................................................................... 7

Identification ............................................................................................... 8

MicroLogic™ Trip Units ............................................................................. 8

Dial Settings ............................................................................................... 9

Trip Unit Settings ....................................................................................... 9

Handle Position .......................................................................................... 9

Load Indication ........................................................................................ 10

Remote Indication .................................................................................... 10

De-Energizing the Switchgear ....................................................................... 11

Isolation Capacity .................................................................................... 11

Maintenance and Servicing Work on Installation ..................................... 11

Maintenance Work following Trip Fault .................................................... 12

Checking Settings .................................................................................... 12

Testing Circuit Breaker ............................................................................ 12

Setting Trip Unit ....................................................................................... 13

Manually Operated Circuit Breakers .............................................................. 13

Circuit Breaker Face ................................................................................ 13

Open, Close, and Reset .......................................................................... 13

Locking the Circuit Breaker ...................................................................... 16

ENGLISH

Circuit Breaker with Rotary Handle ................................................................ 17

Controls and Locking Mechanisms .......................................................... 17

Open, Close, and Reset .......................................................................... 18

Testing a Circuit Breaker with Direct Rotary Handle ............................... 20

Locking a Circuit Breaker with Direct Rotary Handle ............................... 21

Testing a Circuit Breaker with Extended Rotary Handle .......................... 24

Locking a Circuit Breaker with Direct Rotary Handle ............................... 25

Motor-Operated Circuit Breakers ................................................................... 27

Circuit Breaker Face ................................................................................ 27

Front Indications ...................................................................................... 28

Manu/Auto Selector ................................................................................. 28

Open, Close, and Reset Circuit Breakers with Motor Operator ............... 28

Open, Close, and Reset Circuit Breakers with Com Motor Operator ...... 31

Locking the Circuit Breaker ...................................................................... 32

SECTION 2:ELECTRICAL ACCESSORIES AND AUXILIARIES ........................................................ 33

Plug-In Circuit Breaker ................................................................................... 33

Disconnection .......................................................................................... 33

Safety During Disconnection ................................................................... 34

Connection ............................................................................................... 34

Safety During Connection ........................................................................ 35

Protection Against Direct Contact with Power Circuits ............................ 35

Drawout Circuit Breaker ................................................................................. 36

Disconnection .......................................................................................... 36

Safety During Disconnection ................................................................... 36

Removal ................................................................................................... 37

Connection ............................................................................................... 38

Safety During Connection ........................................................................ 38

Protection of the Chassis from Direct Contact ......................................... 38

Auxiliary Circuit Test with Circuit Breaker Disconnected ......................... 38

Page 6

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Table of Contents

Carriage Switches (Optional) ................................................................... 39

ENGLISH

Locking the Chassis ................................................................................. 39

Indication Contacts ........................................................................................ 40

Characteristics of Indication Contacts ...................................................... 40

Standard and Low-Level Contacts ........................................................... 40

SDx Module ................................................................................................... 41

Description, Installation, and Connection ................................................. 41

Default Output Assignment ...................................................................... 42

Reconfiguring the SDx Module Outputs ................................................... 42

SDTAM Module (MicroLogic 2 M and 6 E-M) ................................................ 43

Output Assignment .................................................................................. 43

Contactor Safety Control ......................................................................... 43

Operating Mode ....................................................................................... 44

BSCM ............................................................................................................. 44

Description, Installation, and Connection ................................................. 44

Setting Up the BSCM ............................................................................... 45

Data Sent and Configuration of the BSCM .............................................. 45

Data Provided by the BSCM .................................................................... 47

Configuring BSCM Thresholds ................................................................ 47

Configuring the Resetting of the Communicating Motor Operator ........... 48

NSX Cord ....................................................................................................... 49

Description, Installation, and Connection ................................................. 49

Communication with the NSX Cord ......................................................... 50

Control Auxiliaries .......................................................................................... 51

Control and Indication Contacts Installed Outside the Circuit Breaker .... 51

Voltage Releases ..................................................................................... 51

Other Accessories .......................................................................................... 52

Accessories for Safety ............................................................................. 52

Summary Tables of Auxiliaries ...................................................................... 52

Slots for Control and Indication Auxiliaries .............................................. 52

Operation of the Auxiliary Indication Contacts ......................................... 54

SECTION 3:DESCRIPTION OF TRIP UNITS ............................................................................................. 55

Fault Currents and Trip Units ......................................................................... 55

Applications ............................................................................................. 55

Fault Currents in Electrical Distribution .................................................... 55

Overcurrents Protection in Electrical Distribution ..................................... 56

Protection Against Insulation Faults ......................................................... 57

Protection for Motor-Feeders ................................................................... 58

Vigi Earth-Leakage Protection Module (L-Frame Circuit Breakers Only) ...... 61

Vigi Face .................................................................................................. 61

Installation ................................................................................................ 61

Setting the Earth-Leakage Protection ...................................................... 62

Setting the Intentional Delay .................................................................... 62

Testing and Resetting .............................................................................. 62

Insulation and Dielectric Strength Tests .................................................. 63

Sealing Accessories for Earth-Leakage Protection .................................. 63

MicroLogic Electronic Trip Units .................................................................... 63

Characteristics of MicroLogic Electronic Trip Units .................................. 63

Page 7

Table of Contents PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

MicroLogic 3 Electronic Trip Unit ............................................................. 68

MicroLogic 5 (LSI) and 6 (LSIG) Electronic Trip Units ............................. 69

MicroLogic 5 (LSI) Trip Unit: .................................................................... 71

MicroLogic 6 Trip Unit: Setting the Protection ......................................... 72

MicroLogic 1.3 M Electronic Trip Unit ...................................................... 73

MicroLogic 2 M Electronic Trip Unit ......................................................... 75

MicroLogic 6 E-M Electronic Trip Unit ..................................................... 78

SECTION 4:TESTING MICROLOGIC TRIP UNITS .................................................................................. 79

Trip Unit Checks ............................................................................................ 79

Precautions before Checking, Tests, or Setting ...................................... 79

Pocket Tester ................................................................................................. 80

Pocket Flashlight Function ....................................................................... 80

Preparing the Equipment ......................................................................... 80

Inspection and Checking ......................................................................... 81

Inhibit Thermal Memory Function (Maintenance Level IV) ...................... 81

Stand-Alone UTA Tester ................................................................................ 82

Description of UTA Tester ....................................................................... 82

Preparing the Equipment ......................................................................... 83

Inspection and Checking ......................................................................... 83

The Three Test Functions ........................................................................ 83

Tripping Test Using the Electrical Push-to-Trip Button ............................ 84

Inhibit Ground-Fault Protection Function (Maintenance Level IV) ........... 85

ENGLISH

UTA Tester Connected to a Computer .......................................................... 85

Description and Connection ..................................................................... 85

Hardware and Software ........................................................................... 86

UTA Tester Connected to a Computer with RSU Software ........................... 86

Preparing the Equipment ......................................................................... 88

Inspection and Checking ......................................................................... 88

Tests Using the UTA Tester .................................................................... 88

Saving and Printing .................................................................................. 88

UTA Tester Connected to a Computer with LTU Software ............................ 89

Preparing the Equipment ......................................................................... 90

Inspection and Checking ......................................................................... 90

Tests Using the UTA Tester .................................................................... 90

Automatic Test Using the LTU Software .................................................. 91

Manual Test Using the LTU Software ...................................................... 92

Saving and Printing .................................................................................. 92

SECTION 5:OPERATING THE CIRCUIT BREAKER .............................................................................. 93

Startup ........................................................................................................... 93

List of Checks and Inspections ................................................................ 93

Operating Conditions ..................................................................................... 95

Maintaining the Circuit Breaker During Operation ......................................... 96

Environmental and Operating Conditions ................................................ 96

Regular Preventive Maintenance ............................................................. 96

Inspection and Servicing Operations Required ....................................... 97

Maintenance Following Short-Circuit Trip ................................................ 98

Cleaning the Circuit Breakers .................................................................. 98

In the Event of a Trip ...................................................................................... 98

Page 8

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Table of Contents

Identify the Cause of the Trip ................................................................... 98

ENGLISH

Trip Following a Fault on the Installation ................................................. 99

Maintenance of the Equipment Following Trip on Fault ......................... 100

Malfunctions ........................................................................................... 101

APPENDIX A:WIRING DIAGRAMS ........................................................................................................ 103

Unit-Mount Circuit Breakers ......................................................................... 103

Motor Operator ............................................................................................. 107

SDx Module with MicroLogic Trip Unit ......................................................... 109

SDTAM Module with MicroLogic M Trip Unit ............................................... 110

Smart System Communication Wiring System ............................................ 111

Page 9

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Section 1— Product Introduction

Circuit Breaker Overview

Circuit Breaker Functions

PowerPact™ H-, J-, and L-frame circuit breakers offer a wide choice of fieldinstallable functions.

Figure 1 – PowerPact H-Frame Circuit Breaker

ENGLISH

A. Toggle Switch B. Rotary Handles C. Motor Operator D. Associated Equipment E. MicroLogic™ Trip Units F. Vigi Earth-Leakage Protection Module (PowerPact L-Frame Only) G. MicroLogic Trip Unit Auxiliaries H. MicroLogic Test Interface

Page 10

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

Identification

ENGLISH

Figure 2 – Faceplate

PowerPact

HD 150

Circuit Breaker Interuptor Automático Disjoncteur

HDA36100

Interrupting Rating Valor de Interrupción Valeur d’interruption (V) 240 480 600 240 1Ø - 3Ø 480 1Ø - 3Ø 250

AIR/Anom.I 50/60 Hz Ue (V) 220/240 380/440 400/525 Ui 750V

LISTED C.B.

Issue No. 186

E10027

(kA) 25 50/50 Hz 18 14 42 18 20

Icu (kA) 25 18 14 Uimp 8kV

Ics (kA) 25 18 14

153555

IEC 60947-2

CSA

NEMA

NOM

UNE

UTE VDE

CIE

A B

E F

H I

The faceplate on the front of the circuit breaker identifies the circuit breaker and its characteristics:

A. Circuit breaker type B. Circuit breaker disconnector symbol C. Interruption ratings D. Standards

: Operating voltage per IEC

E. U

: Ultimate breaking capacity per IEC

F. I

: Service breaking capacity per IEC

G. I

H. U I. U

: Rated impulse withstand voltage per IEC

imp

: Insulation voltage per IEC

J. Listing marks

NOTE: For extended rotary handles, open the door to view the faceplate label.

MicroLogic™ Trip Units

The PowerPact H-, J-, and L-frame family of circuit breakers use the MicroLogic electronic trip units. The range of these MicroLogic trip units consists of two families of electronic trip units.

• Standard MicroLogic 1, 2 and 3 trip units without display provide the following functions:

— Dials to set protection settings. — MicroLogic 3 trip units protect conductors in commercial and industrial

electrical distribution.

— MicroLogic 2 M trip units protect motor-feeders on standard applications.

The trip units calculate the thermal trip curves assuming self-cooled motors.

For information on the standard MicroLogic 1, 2, and 3 trip units, see bulletin 48940-310-01, MicroLogic™ 1, 2, and 3 Electronic Trip Units—User Guide.

• Advanced MicroLogic 5 and 6 trip units with display provide the following functions:

— Protecting the electrical distribution system or specific applications — Metering instantaneous and demand values for electrical quantities — Kilowatt hour metering — Operating information (such as peak demand values, customized alarms,

or operation counters)

— Communication

For information on the advanced MicroLogic 5 and 6 trip units, see bulletin 48940-312-01, MicroLogic™ 5 and 6 Electronic Trip Units—User Guide.

Page 11

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

25 20

1.5

Ii (x In)

In=60A

3.2

In=60A

Ir (A) tr @ 6 Ir

Ii (x In)

4 2 1

1.5

4 3 2

15A

Dial Settings

The dial positions on the front set the circuit breaker pickup settings.

Figure 3 – Trip Unit Dials

Trip Unit Settings

MicroLogic 3 Electronic Trip

MicroLogic 5 Electronic Trip

A. Sensor rating In B. Protection setting dials

The circuit breaker trip unit settings must satisfy the requirements of the performance and installation diagram (see “Startup” on page 93).

For MicroLogic 5 and 6 electronic trip units, read all settings on the display unit (see “MicroLogic 5 (LSI) and 6 (LSIG) Electronic Trip Units” on page 69).

ENGLISH

Handle Position

The handle position indicates the state of the circuit breaker:

Standard Handle Rotary Handle Motor Operator

• I (ON): Circuit breaker closed.

Close manually.

• O (OFF): Circuit breaker open.

Open manually.

• Trip or Tripped: Circuit breaker tripped.

Tripped by the protection (trip unit or trip auxiliaries), the push-to-trip button, or the UTA tester.

• I (ON): Circuit breaker closed

(In Auto or Manu mode.)

• O (OFF): Circuit breaker open or

tripped: (In Auto or Manu mode.)

Page 12

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

CBA

WARNING

Load Indication

ENGLISH

Circuit breakers equipped with a MicroLogic 5 or 6 trip unit provide precise information of the state of the circuit breaker or the installation. This information can be used for the management and maintenance of the installation.

For example, if the pre-alarm or alarm indicator is lit, performing load shedding may prevent tripping due to circuit breaker overload.

Figure 4 – Load Indication

A. The Ready LED (green) blinks slowly when the electronic trip unit is ready to

provide protection.

B. The overload pre-alarm LED (orange) shows a steady light when the load

exceeds 90% of the I

C. The overload alarm LED (red) shows a steady light when the load exceeds

105% of the I

setting.

Remote Indication

Information is available remotely:

• from the indication contacts

• by using a communication bus

These indication auxiliaries are field installable.

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.

For more details on the remote indication and communication options, see “Summary Tables of Auxiliaries” on page 52 and refer to bulletin 48940-312-01, MicroLogic™ 5 and 6 Electronic Trip Units—User Guide.

Page 13

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

DANGER

De-Energizing the Switchgear

Isolation Capacity

PowerPact H-, J-, and L-frame circuit breakers offer positive contact indication and are suitable for isolation in accordance with standards IEC 60947-1 and 2. The O (OFF) position of the actuator is sufficient to isolate the circuit breaker concerned.

The following marking on the faceplate label indicates the circuit breaker is capable of isolation:

To confirm this capability, standards IEC 60947-1 and 2 require specific shock withstand tests.

H-, J-, and L-frame circuit breakers can be locked in the O (OFF) position to allow work to be carried out with the power off in accordance with installation rules. The circuit breaker can only be locked in the open position if the circuit breaker is in the O (OFF) position.

NOTE: Locking a circuit breaker in the open position is sufficient to isolate the circuit breaker.

The locking devices depend on the type of actuator:

• For circuit breakers with handles, see “Locking Accessories” on page 16.

• For circuit breakers with rotary handles, see “Locking Accessories” on page 25 and “Locking the Extended Rotary Handle” on page 26.

• For circuit breakers with motor operators, see “Locking Accessories” on page 32.

ENGLISH

Maintenance and Servicing Work on Installation

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• 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 only be installed and serviced 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.

Turn off all power supplying the equipment before working on or inside equipment. For a partial powering down of the installation, the installation and safety rules require clearly labeling and isolating the feed being worked on.

Page 14

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

CAUTION

Maintenance Work following Trip Fault

ENGLISH

HAZARD OF CLOSING ON ELECTRICAL FAULT

Do not close the circuit breaker again without first inspecting and, if necessary, repairing the downstream electrical equipment.

Failure to follow these instructions 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.

After a fault trip:

1. Isolate the feed (see “Maintenance and Servicing Work on Installation” on page 11) 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.

Checking Settings

Testing Circuit Breaker

For more information about troubleshooting and restarting following a fault, see “In the Event of a Trip” on page 98.

Checking settings does not require any particular precautions. However, a qualified person must do the checks.

HAZARD OF NUISANCE TRIPPING

Protection tests must only be done by trained electrical personnel.

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

When testing circuit breaker trip mechanisms, precautions must be taken:

• to not disrupt operations.

• to not trip inappropriate alarms or actions.

For example, tripping the circuit breaker with the push-to-trip button or with test software can lead to inappropriate fault indications or corrective actions (such as switching to a replacement power source).

Page 15

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

CAUTION

1.5

.92

.93

.94

.98

.96

110

125

140

160

250

175

2.2 Micrologic

Isd

(x Ir)

Ir(x Io

)

Io(A

)

30A

>110

150A

PowerPact

HDA36100

Circuit Breaker Interuptor Automático Disjoncteur

HD 150

Interrupting Rating Valor de Interrupción Valeur d’interruption

CSA

NEMA

NOM

(V) 240 480 600 240 1Ø - 3Ø 480 1Ø - 3Ø 250

(kA) 25 50/50 Hz 18 14 42 18 20

AIR/Anom.I 50/60 Hz Ue (V) 220/240 380/440 400/525 Ui 750V

Icu (kA) 25 18 14 Uimp 8kV

Ics (kA) 25 18 14

IEC 60947-2

CIE

UNE

UTE

VDE

153555

LISTED C.B.

Issue No. 186

E10027

Setting Trip Unit

HAZARD OF NUISANCE TRIPPING OR FAILURE TO TRIP

Protection setting adjustments must be done only by trained electrical personnel.

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

Modifying trip unit settings requires a thorough knowledge of the installation and safety rules.

Manually Operated Circuit Breakers

Circuit Breaker Face

Figure 5 – Circuit Breaker Face

ENGLISH

Open, Close, and Reset

Opening and Closing Locally

A. Rating Label B. Handle C. Push-to-trip button D. Trip Unit Setting Range E. Trip Unit F. Trip Unit Adjustment Dials

For more information about trip units, see “Description of Trip Units” on page 55.

Figure 6 – Manual Operation

• To close the circuit breaker, move the handle from the O (OFF) position to the I (ON) position.

• To open the circuit breaker, move

the handle from the I (ON) position to the O (OFF) position.

Page 16

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

CAUTION

Resetting After Trip

ENGLISH

HAZARD OF CLOSING ON ELECTRICAL FAULT

Do not reclose the circuit breaker without first inspecting and, if necessary, repairing the downstream electrical equipment.

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

Figure 7 – Resetting

The circuit breaker has tripped, the handle has moved from the I (ON) position to the reset position.

The fact that a circuit breaker has tripped does not remedy the cause of the fault on the downstream electrical equipment.

Reset Procedure To reset after a fault trip:

1. Isolate the feed (see “Maintenance and Servicing Work on Installation” on page 11) 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. Reset and close the circuit breaker.

Table 1 – Reset Procedure

Step Action Position

Move handle to O (OFF) to reset the circuit breaker.

Move handle to I (ON) to close the circuit breaker.

O (OFF)

I (ON)

Page 17

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Testing the Circuit Breaker To check whether the trip mechanism is working correctly, press the push-to-trip

button.

Table 2 – Push-to-Trip Procedure

Step Action Position

1 Close the circuit breaker. I (ON)

Press the push-to-trip button to trip the circuit breaker.

Move the handle to the O (OFF) position to reset the circuit breaker.

O (OFF)

ENGLISH

Move the handle to the I (ON) position to close the circuit breaker.

I (ON)

Page 18

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

DANGER

Locking the Circuit Breaker

ENGLISH

Locking Accessories

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

When circuit breaker handle is locked OFF (O), always use a properly rated voltage sensing device to confirm power is off before working on equipment.

Failure to follow these instructions will result in death or serious injury.

Use locking accessories to lock the handle in the I (ON) or O (OFF) position.

Table 3 – Locking Accessories

Accessory Padlocks

Use up to three padlocks (not

Accessory that is part of the case

supplied) 0.2–0.3 in. (5–8 mm) in diameter

Use up to three padlocks (not

Accessory that is detachable

supplied) 0.2–0.3 in. (5–8 mm) in diameter

NOTE: Locking the handle in the I (ON) position does not disable the circuit breaker protection functions. If there is a fault, the circuit breaker trips without altering its performance. When unlocked, the handle moves to the tripped position. To return the circuit breaker to service, see “Open, Close, and Reset” on page 13.

Page 19

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Seals Use sealing accessories to prevent circuit breaker operations.

Table 4 – Sealing Accessories

Seal Prohibited Operations

• Dismantling the escutcheon

Escutcheon fixing screw

Transparent protective cover

• Accessing the auxiliaries

• Dismantling the trip unit

• Altering trip unit settings

• Accessing the test port for the trip

units

Circuit Breaker with Rotary Handle

ENGLISH

Controls and Locking Mechanisms

The Front Face The circuit breaker operating controls, operation indicators, settings, and locking

mechanisms for the direct rotary handle are on the front of the circuit breaker.

If there is an extended rotary handle:

• The circuit breaker operating controls are on the door escutcheon.

• The operation indicators and settings are only accessible when the door is open.

• Operate the locking mechanisms on the circuit breaker or on the door escutcheon (door closed).

Page 20

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

.92

.93

.98

175

2.2 Micrologic

Isd

Isd(x Ir)

r(x Io)

Io(A)

%Ir

>30A

>30

>110

1.5

.93

.95

.98

.96

160

225

200

2.2 Micrologic

Isd

(x Ir)

Ir(x Io)

(A)

%Ir

>30A

>30

>110

Ø5...8

CAUTION

Figure 8 – Circuit Breaker Face with Rotary Handle

ENGLISH

B C

D C

E F

A. Faceplate Label B. Direct rotary handle C. Extended rotary handle D. Push-to-trip button E. Trip unit F. Trip unit adjusting dials

Open, Close, and Reset

Opening and Closing Locally

Resetting after a Trip

NOTE: For more information about the trip units, see “Description of Trip Units” on

page 55.

Figure 9 – Operating Handle

• To close the circuit breaker, turn the rotary handle clockwise from the O (OFF) position to the I (ON) position.

• To open the circuit breaker, turn the rotary handle counterclockwise from the I (ON) position to the O (OFF) position.

HAZARD OF CLOSING ON ELECTRICAL FAULT

Do not close the circuit breaker again without first inspecting and, if necessary, repairing the downstream electrical equipment.

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

Page 21

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Figure 10 – Tripped Circuit Breaker

The circuit breaker has tripped, the handle has moved from the I (ON) position to the reset position.

Reset Procedure To reset after a fault trip:

1. Isolate the feed (see “Maintenance and Servicing Work on Installation” on page 11) 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. Reset and close the circuit breaker.

Table 5 – Reset Procedure

Step Action Position

The fact that a circuit breaker has tripped does not remedy the cause of the fault on the downstream electrical equipment.

Turn the rotary handle counterclockwise from the Trip position to the O (OFF) position. The circuit breaker is open (reset).

ENGLISH

O (OFF)

Turn the rotary handle clockwise from the O

(OFF) position to the I (ON) position. The circuit breaker is closed.

I (ON)

Page 22

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

Testing a Circuit Breaker with Direct Rotary Handle

ENGLISH

To check whether the trip mechanism is working correctly, press the push-to-trip button.

Table 6 – Push-to-Trip Procedure

Step Action Position

1 Close the circuit breaker. I (ON)

Press the push-to-trip button: the circuit breaker trips.

Turn the rotary handle counterclockwise to the O (OFF) position. The circuit breaker is open.

Turn the rotary handle clockwise from the O (OFF) position to the I (ON) position. The circuit breaker is closed.

Trip

O (OFF)

I (ON)

Page 23

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Locking a Circuit Breaker with Direct Rotary Handle

NOTE: Locking the rotary handle in the I (ON) position does not disable the circuit

breaker protection functions. If there is a fault, the circuit breaker still trips. When unlocked, the handle moves to the Trip position. To return the circuit breaker to service, follow the resetting instructions (see “Resetting after a Trip” on page 18).

Locking Accessories Lock handle with up to three padlocks (not supplied) or a keylock.

Table 7 – Locking Accessories

Accessory Lock

Lock handle with up to Padlocking (standard) only in the O (OFF) position

three padlocks (not

supplied) with shackle

diameters of 5–8 mm.

ENGLISH

Padlocking (after modification to the rotary handle during installation) in the two positions I (ON) and O (OFF)

Keylocking with a Profalux Ronis® lock (optional).

The device can be locked in the O (OFF) position only or in the O (OFF) and I (ON) position, depending on the bolt chosen.

Lock handle with up to

three padlocks (not

supplied) with shackle

diameters of 5–8 mm.

A Profalux or Ronis lock

is field installable.

Keylocking can be used

at the same time as

padlocking.

Page 24

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

DANGER

Door Locking The direct rotary handle locks the door closed when the circuit breaker is on.

ENGLISH

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Disabling the door lock must be done only by trained electrical personnel.

Failure to follow these instructions will result in death or serious injury.

Figure 11 – Door Locking with Direct Rotary Handle

The direct rotary handle locks the door in the closed position when the circuit breaker is in the I (ON) position.

Temporarily disable this lock to open the door.

Preventing Circuit Breaker Closing When the Door Is Open

Non-Interlocked Door Option

Seals Use sealing accessories to prevent circuit breaker operations.

The door locking device can also prevent moving the direct rotary handle to the I (ON) position when the door is open.

Omitting the lock requires modifying the extended rotary handle (see instructions shipped with the rotary handle). In this case, the functions for door locking and preventing the circuit breaker from being closed when the door is open are inoperative.

Page 25

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Table 8 – Sealing Accessories

Seal Prohibited Operations

ENGLISH

Escutcheon fixing screw

Transparent protective cover

• Dismantling the escutcheon

• Accessing the auxiliaries

• Dismantling the trip unit

• Altering trip unit settings

• Accessing the test port for the trip

units

Page 26

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

res

OFF

res

OFF

reset

Trip

Testing a Circuit Breaker with Extended Rotary Handle

ENGLISH

To check the trip mechanism, press the push-to-trip button.

The push-to-trip button is not accessible on the front face; conduct the test with the door open.

Table 9 – Push-to-Trip Procedure

Step Action Position

Switch the circuit breaker to the open O (OFF) position. Open the door.

Use a special tool

to turn the extension shaft clockwise and switch the circuit breaker to the I (ON) position. The circuit

O (OFF)

I (ON)

breaker is ready for the test.

Press the push-to-trip button. The circuit breaker trips.

Trip

Use a special tool

to turn the extension shaft counterclockwise and switch the

circuit breaker from the Trip position to

O (OFF) the O (OFF) position. The circuit breaker is in the open position.

5 Close the door —

The special tool can be:

• A standard rotary handle designed for tests

• A flat wrench, taking care not to damage either the extension shaft (the hollow square 10 mm x 10 mm tube) or its surface treatment

Page 27

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

DANGER

Locking a Circuit Breaker with Direct Rotary Handle

NOTE: Locking the rotary handle in the I (ON) position does not disable the circuit

Locking Accessories The extended rotary handle offers several locking functions to:

• Prevent the door opening

• Prevent the rotary handle operating

Some locking functions can be disabled on different adaptations.

Locking the Door

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Disabling the door lock must be done only by trained electrical personnel.

Failure to follow these instructions will result in death or serious injury.

Figure 12 – Door Locking with Extended Rotary Handle

The extended rotary handle locks the door in the I (ON) position as standard.

ENGLISH

Temporarily disable this lock to open the door.

Omitting this lock requires modifying the extended rotary handle (see instruction shipped with the extended rotary handle).

Example: An application includes a circuit breaker for a switchboard incoming supply and several receiver circuit breakers with extended rotary handles installed behind the same door. Locking the door with a single rotary handle (incoming supply circuit breaker) simplifies maintenance work on the switchboard.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

Locking the Extended Rotary Handle

ENGLISH

The handle can be locked with up to three padlocks (not supplied) or keylock. NOTE: Locking the rotary handle in the I (ON) position does not disable the circuit

Table 10 – Locking Accessories

Accessory Lock

Padlocking (standard) only in the O (OFF) position. Padlocking the rotary handle prevents the door opening.

Padlocking (after modification to the rotary handle during installation) in the two positions I (ON) and O (OFF)

There is a choice of two options when locking the rotary handle in the I (ON) position:

• Standard with the door opening

locked.

• As an option, door is not

interlocked, and locking the rotary handle does not stop the door from opening.

Lock handle with up to three padlocks (not supplied) with shackle diameters of 5– 8 mm.

Key-Operated Locking Procedure

Keylocking with a Profalux or Ronis lock (optional).

Lock the device in the O (OFF) position only or in the O (OFF) and I (ON) positions depending on the bolt chosen.

A Profalux or Ronis lock is field installable. Keylocking can be used at the same time as padlocking.

Keylocking can be done with circuit breaker in either the O (OFF) or the I (ON) position.

Table 11 – Keylocking

Step

1 Open the door.

3 Close the door.

Action (Circuit Breaker in the O (OFF) Position)

Use the keylock mounted on the case inside the switchboard to lock the rotary handle.

Action (Circuit Breaker in the I (ON) Position)

Open the door by disabling the door locking device if necessary.

Use the keylock mounted on the case inside the switchboard to lock the rotary handle.

Close the door, disabling the door locking device if necessary.

Page 29

Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

1.5

.92

.94

.95

.98

.97

.96

110

160

225

175

2.2 Micrologic

Isd

(x Ir)

(x Io)

)

>30A

>30

>11

Ø5...8

scharged

PowerPact

HDA36100

Circuit Breaker Interuptor Automático Disjoncteur

HD 150

Interrupting Rating Valor de Interrupción Valeur d’interruption

CSA

NEMA

NOM

(V) 240 480 600 240 1Ø - 3Ø 480 1Ø - 3Ø 250

(kA) 25 50/50 Hz 18 14 42 18 20

AIR/Anom.I 50/60 Hz Ue (V) 220/240 380/440 400/525 Ui 750V

Icu

(kA) 25 18 14 Uimp 8kV

Ics (kA) 25 18 14

IEC 60947-2

CIE UNE UTE VDE

153555

LISTED C.B. Iss

ue No. 186 E10027

RONIS

PowerPact

Circuit Breaker

uptor Automático

HD 150

Motor-Operated Circuit Breakers

There are two possible types of motor operator:

• Motor operator, which can open and close a circuit breaker remotely with electrical commands (using pushbuttons)

• Communicating motor operator, which can open and close a circuit breaker remotely using the communication bus

Circuit Breaker Face

The main controls, operation indicators, settings, and locking mechanisms are on the front of an electrically-operated circuit breaker (with motor operator).

Figure 13 – Motor-Operated Circuit Breaker Face

ENGLISH

A. Faceplate Label B. Stored energy control in manual mode C. Main contacts position indicator D. Control position indicator E. Padlocking in O (OFF) position F. Manual/automatic operating mode selector

G. Keylocking in O (OFF) position

(J-frame only) H. Sealing accessory I. Closing (I) and opening (O)

controls J. Trip unit front indications

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

CAUTION

Front Indications

ENGLISH

Two operation indicators on the front of the trip unit show the position and state of the motor operator.

Table 12 – Front Indications

Indicator Shows

• I (ON) position

Main contacts position indicator:

• O (OFF) or tripped position

Note: Use the SD or SDEswitch to distinguish the tripped position from the O (OFF) position.

• Stored energy control charged

Control charge indicator:

• Stored energy control discharged

NOTE: Stored energy control only provides the necessary energy for the circuit breaker closing switch. The circuit breaker mechanism supplies the energy for tripping.

Manu/Auto Selector

The Manu/Auto button selects operating mode.

Table 13 – Manu/Auto Button

In automatic operating mode, only electrical commands are executed.

In manual operating mode, all electrical commands are ignored.

Open, Close, and Reset Circuit Breakers with Motor Operator

HAZARD OF REPEATED CLOSING ON ELECTRICAL FAULT

Do not modify the motor operator wiring.

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

The motor operator can open and close a circuit breaker remotely with electrical commands. There are many applications:

• Automation of electrical distribution to optimize operating costs

• Normal/standby source changeover: changes over to a replacement source to improve continuity of service

• Load shedding/reconnection to optimize tariff-based contracts

Wire the motor operator in strict accordance with the motor operator wiring diagram in Appendix A.

In automatic operating mode, wiring the SDE contact prevents the circuit breaker from resetting automatically on an electrical fault. For more details on the SDE contact, see “Indication Contacts” on page 40.

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Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Ø5...8

D E

Manual Operation: Opening, Closing, and Resetting Locally

Move the selector to the Manu position.

Figure 14 – Selecting Manu Position

ENGLISH

Check that the stored energy control is charged (the charge indicator [Figure 14, A] is on charged). If not, reset the circuit breaker.

To reset the circuit breaker:

1. Close the circuit breaker by pressing the closing switch . When the circuit breaker is closed:

— The contact position indicator (B) changes to I ON — The charge indicator (C) changes to discharged

2. Open the circuit breaker by pressing the opening switch . When the circuit breaker is open:

— The contact position indicator (D) changes to O OFF — The charge indicator (E) stays on discharged

3. Reset the stored energy control by operating the handle (eight times). When the circuit breaker is ready to be closed:

— The contact position indicator (F) stays on O OFF — The charge indicator (A) changes to charged

Automatic Operation: Opening, Closing, and Resetting Remotely

Move the selector to the Auto position.

Figure 15 – Selecting Auto Position

1. Close the circuit breaker by sending a close (ON) command (Figure 15, 1). When the circuit breaker is closed:

— The contact position indicator (A) changes to I ON — The charge indicator (B) changes to discharged

2. Open the circuit breaker by sending an open (OFF) command (2). When the circuit breaker opens:

— The contact position indicator (C) changes to O OFF — The charge indicator (D) stays on discharged

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

CAUTION

3. Reset the stored energy control. There are three reset modes, depending on

ENGLISH

the wiring diagram (see motor operator wiring diagrams in Appendix A): — Automatic reset — Remote reset using the pushbutton — Manual reset by operating the handle

The circuit breaker opens in the O (OFF) position:

— The contact position indicator (E) stays on O (OFF) — The charge indicator (F) changes to charged

Resetting after a Fault Trip

HAZARD OF CLOSING ON ELECTRICAL FAULT

Do not close the circuit breaker again without first inspecting and, if necessary, repairing the downstream electrical equipment.

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

NOTE: The fact that a protection has tripped does not remedy the cause of the

fault on the downstream electrical equipment.

Resetting after a fault trip can only be done locally. When operating in automatic mode, return to manual operation to reset the circuit breaker.

To reset after a fault trip:

1. Isolate the feed (see “Maintenance and Servicing Work on Installation” on page 11) 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. Reset and close the circuit breaker.

Figure 16 – Resetting After a Fault Trip

Ø5...8

Automatic operation:

1. Move the operating mode selector to the manual position (Manu).

2. Reset the stored energy control by operating the handle (eight times). The charge indicator changes to charged (B) and the internal mechanism goes from the Tripped position to the O (OFF) position (A).

3. Lock the circuit breaker and look for the cause of the fault.

4. Move the position selector back to automatic (Auto).

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Section 1—Product Introduction PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

CAUTION

WARNING

Manual operation:

1. Reset the stored energy control by operating the handle (eight times).

2. The charge indicator changes to charged (B) and the internal mechanism goes from the Tripped position to the O (OFF) position (A).

3. Lock the circuit breaker and look for the cause of the fault.

Open, Close, and Reset Circuit Breakers with Com Motor Operator

HAZARD OF REPEATED CLOSING ON ELECTRICAL FAULT

Do not modify the wiring schemata for the motor operator.

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

Manage the communicating motor operator with the communication bus.

POTENTIAL COMPROMISE OF SYSTEM AVAILABILITY, INTEGRITY, AND CONFIDENTIALITY

ENGLISH

Manual Operation: Opening, Closing, and Resetting Locally

Automatic Operation: Opening, Closing, and Resetting Remotely

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.

For this function, it is necessary to:

• Install a Breaker Status Control Module (BSCM, see “BSCM” on page 44) and the NSX Cord (see “NSX Cord” on page 49)

• Use a communicating motor operator

Connect the BSCM module to the communication bus by the NSX Cord:

• To receive closing, opening, and reset commands from the circuit breaker

• To transmit the circuit breaker states: O (OFF), I(ON), Tripped by SDE

NOTE: The communicating motor operator has a separate bulletin (see catalog 0611CT1001, PowerPact H-, J-, and L-Frame 15 to 600 A Circuit Breakers)

The process is the same as the standard motor operator, see 29.

Resetting After a Fault Trip Without modifying the factory configuration, the process is the same as the

standard motor operator (see 30).

Reconfiguration of the BSCM module (see “Configuring the Resetting of the Communicating Motor Operator” on page 48) authorizes remote resetting after a fault trip on a circuit breaker with the communicating motor operator. The precise data on the cause of the electrical fault, transmitted by MicroLogic 5 and 6 trip units through the communication bus, enables the operator to make this decision.

Page 34

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 1—Product Introduction

Locking the Circuit Breaker

ENGLISH

Locking Accessories Lock the mechanism with up to three padlocks (not supplied) or a keylock.

NOTE: Both locking methods can be used at the same time Table 14 – Locking Accessories

1. Switch the circuit breaker to the O (OFF) position.

2. Pull out the tab.

3. Lock the circuit breaker with the keylock (leaving the tab out).

1. Switch the circuit breaker to the O (OFF) position.

2. Pull out the tab.

3. Lock the tab with up to three padlocks, 0.2–0.3 in. (5–8 mm) diameter.

The circuit breaker is locked. No commands in Auto mode or Manu mode are executed.

The circuit breaker is locked. No commands in Auto or Manu mode will be executed.

Sealing Accessories Use sealing accessories to prevent circuit breaker operations.

Table 15 – Sealing Accessories

Seal Prohibited Operations

Motor operator fixing screw

Transparent cover for the motor operator

Transparent protective cover for the trip units

• Dismantling the escutcheon screw

• Accessing the auxiliaries

• Dismantling the trip unit

Accessing the manual/automatic selector (depending on its position, manual operation operation is disabled).

Altering any settings and accessing the test port

, or automatic

In this case no local operations are possible.

Page 35

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Section 2— Electrical Accessories and Auxiliaries

This chapter describes the electrical accessories and auxiliaries available for the PowerPact H-, J-, and L-frame circuit breakers.

Plug-In Circuit Breaker

Disconnection

ENGLISH

Use plug-in bases with all circuit breaker types:

• With handle

• With rotary handle

• With motor operator

• With a Vigi module

Table 16 – Disconnection Procedure

Step Action

1 Switch the circuit breaker to the O (OFF) position.

2 Remove both fixing screws.

3 Pull out the circuit breaker, keeping it horizontal.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Safety During Disconnection

ENGLISH

Table 17 – Disconnection

The auxiliary circuits automatically disconnect because of the connectors located on the base and at the rear of the circuit breaker.

Open the circuit breaker before disconnecting it. If the circuit breaker is in the I (ON) position when disconnecting, a safety mechanism trips the circuit breaker before the pins disconnect.

Connection

Table 18 – Connection Procedure

Step Action

1 Switch the circuit breaker to the O (OFF) position.

2 Connect the circuit breaker.

3 Replace both fixing screws.

Page 37

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Safety During Connection

Open the circuit breaker before connecting it. If the circuit breaker is in the closed (I ON) position when connecting, a safety mechanism ensures that the poles open automatically by tripping the circuit breaker before the pins connect.

The auxiliary circuits automatically disconnect because of the connectors located on the base and at the rear of the circuit breaker.

Protection Against Direct Contact with Power Circuits

An adapter enables the base to take the same isolation and connection accessories as the unit-mount circuit breaker.

Table 19 – Base Protection Against Direct Contact

ENGLISH

Circuit Breaker Connected

Circuit Breaker Removed

IP40 with terminal shields

IP20 base only IP40 base equipped with terminal shields and blanking covers

Page 38

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Drawout Circuit Breaker

ENGLISH

Use the drawout chassis with all circuit breaker types:

• With handle

• With rotary handle

• With motor operator

Disconnection

Table 20 – Disconnection Procedure

Step Action

Switch the circuit breaker to the open (O OFF) position.

Move both locking levers down as far as they can go.

Push down both operating handles at the same time until you hear a double click from the locking levers (as the locking levers return to their original position).

The circuit breaker is disconnected.

Safety During Disconnection

The auxiliary circuits can be:

• Automatically disconnected because of the connectors located on the chassis

• Left connected for a circuit breaker with a manual auxiliary connector (see

Open the circuit breaker before disconnecting it. If the circuit breaker is in the closed (I ON) position when disconnecting, a safety mechanism ensures that the poles open automatically by tripping the circuit breaker before the pins disconnect.

and at the rear of the circuit breaker

Table 21)

Page 39

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Removal

Table 21 – Removal Procedure

Step Action

Disconnect the circuit breaker.

2 Move both locking levers down.

Disconnect the manual auxiliary connector (if the circuit breaker has one).

ENGLISH

4 Remove the circuit breaker, keeping it horizontal.

Push down both operating handles as far as the next notch.

Page 40

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Connection

ENGLISH

Table 22 – Connection Procedure

Step Action

Switch the circuit breaker to the open (O OFF) position.

2 Move both locking levers forward.

Move both operating handles down to the low position on the chassis.

Push in the circuit breaker until you hear a click from the locking levers.

3 Raise both locking levers at the same time.

Safety During Connection

Protection of the Chassis from Direct Contact

Use blanking plates to protect the chassis from direct contact.

Table 23 – Chassis Protection from Direct Contact

Circuit Breaker Disconnected or Removed

Auxiliary Circuit Test with Circuit Breaker Disconnected

Figure 17 – Circuit Breaker

Disconnected

The auxiliary circuit test function is possible with devices which have manual auxiliary connectors.

In the disconnected position, operate the device (by the actuator or push-to-trip button) to check whether the auxiliary circuits are working correctly.

IP20 base only

IP40 base with blanking covers

Page 41

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

1 2

Carriage Switches (Optional)

Two changeover contacts can be installed on the chassis (for more details of contact operation, see “Control Auxiliaries” on page 51).

Figure 18 – Carriage Switches

1. Connected-position carriage switch (CE)

2. Disconnected position carriage switch (CD)

Locking the Chassis

Table 24 – Chassis Locking

Lock the circuit breaker using up to three padlocks (not supplied) with a shackle diameter of 0.2–0.3 in. (5–8 mm) to prevent connection.

ENGLISH

Lock the circuit breaker using a keylock in the connected or disconnected position

Page 42

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

NC NO

Indication Contacts

ENGLISH

Characteristics of Indication Contacts

Indication contacts are either under the front face of the circuit breaker, under the motor operator, or in the rotary handle. Installation is in a compartment isolated from the power circuits. There are three types:

• Standard contact

• Low-level contact

• Solid-state output for SDx and SDTAM Modules

Standard and Low-Level Contacts

Standard and low-level contacts are the common point changeover type.

Figure 19 – Contacts

NC: Normally Closed contact NO: Normally Open contact

Table 25 – Standard and Low-Level Contacts

Name Definition

SDE

SDV

Changeover The NO contact is normally open when the circuit breaker is in the O (OFF) position.

Trip indication The SD contact indicates that the circuit breaker has tripped due to:

• Long-time protection

• Short-time protection

• Ground-fault protection

• An earth-leakage fault detected by the Vigi module

• Operation of the MX or MN voltage releases

• Operation of the push-to-trip button

• Connecting/Disconnecting the circuit breaker

• Manually opening the motor operator

Electrical fault indication The SDE contact indicates that the circuit breaker has tripped on an electrical fault due to:

• Long-time protection

• Short-time protection

• Ground-fault protection

• An earth-leakage fault detected by the Vigi module

Earth-leakage fault indication (tripped by Vigi) The SDV contact indicates that the circuit breaker has tripped due to an earth-leakage fault

detected by the Vigi module. Available on L-frame circuit breakers only.

NOTE: One indicator contact model provides OF, SD, SDE, and SDV indication functions. The position of the contact inside the case determines the function (OF, SD, or SDE contacts).

Page 43

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

SDx Module

Circuit breakers equipped with MicroLogic 3, 5, and 6 trip units can take the optional SDx Module.

The SDx Module receives data from the trip unit through a fiber optic link.

• For MicroLogic 3 trip units, data is from a solid state output (nonconfigurable) for remote feedback of a thermal trip alarm

• For MicroLogic 5 and 6, data is from two solid state outputs (configurable) for remote feedback of alarms

Description, Installation, and Connection

Figure 20 – SDx Module

SDx Module

Wiring Diagrams MicroLogic 3 MicroLogic 5 MicroLogic 6

ENGLISH

Accessory Slot: 150–250 A 400–600 A

The SDx Module cannot be installed at the same time as an MN/MX release and OF contact.

Connect the SDx Module and the two solid state outputs in strict accordance with the wiring diagram.

The characteristics of the SDx Module solid state outputs are:

• Voltage: 24–415 Vac/Vdc

• Current:

— Active outputs: 80 mA max — Idle outputs: 0.25 mA

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Default Output Assignment

ENGLISH

The functions offered by the SDx Module outputs depend on the type of trip unit installed with the module:

• For all MicroLogic trip units, output 1 (SD2/OUT1) is assigned to the thermal fault indication (SDT) alarm. This alarm indicates that the long-time protection was the cause of the trip.

• Output 2 (SD4/OUT2) is only available with MicroLogic 5 and 6.

— For MicroLogic 5 trip units, it is assigned to the long-time pre-alarm (PAL I

Alarm activated as soon as the current in the load reaches 90% Ir or higher.

— For MicroLogic 6 trip units, it is assigned to the ground-fault indication

alarm (SDG).

NOTE: Outputs SDT and SDG return automatically to their initial state when the device closes.

Reconfiguring the SDx Module Outputs

SDx outputs can be reconfigured on site as follows:

Reconfigure Outputs 1 (SD2/OUT1) and 2 (SD4/OUT2) on site:

• Using only MicroLogic 5 and 6 trip units

• Using the UTA Tester

• Using the RSU software

For more details on the list of alarms and configuration options using the RSU software, see “UTA Tester Connected to a Computer with RSU Software” on page 86 and bulletin 48940-312-01, MicroLogic 5 and 6 Electronic Trip Units - User Guide.

Figure 21 – SDx Outputs

The operating mode of the outputs can be configured:.

• Without latching

• With latching (the return to the initial state takes place using the communication bus or the MicroLogic keypad)

• Time-delayed without latching (the return to the initial state takes place at the end of the time delay)

Page 45

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

• Forced to the closed state (the return to the initial state takes place through the communication bus or the MicroLogic keypad)

• Forced to the open state (the return to the initial state takes place through the communication bus or the MicroLogic keypad)

SDTAM Module (MicroLogic 2 M and 6 E-M)

Circuit breakers with a MicroLogic 2 M or 6 E-M trip unit designed to protect motors can take the SDTAM Module. The SDTAM Module receives data from the MicroLogic trip unit through a fiber optic link and makes available two inverted solid state outputs assigned to manage tripping due to overload.

Figure 22 – SDTAM Module

SDTAM

The SDTAM Module cannot be installed at the same time as an MN/MX release and OF contact. Connect the SDTAM Module and the two solid state outputs in strict accordance with the wiring diagram.

The characteristics of the SDTAM Module solid state outputs are:

• Voltage: 24–415 Vac/Vdc

• Current: — Active outputs: 80 mA max — Idle outputs: 0.25 mA

Accessory Slot: 150–250 A 400–600 A

ENGLISH

Wiring Diagram

Output Assignment

Contactor Safety Control

Output 1 (SD2/OUT1): normally open, indicates thermal faults.

Output 2 (SD4/OUT2): normally closed, opens the contactor.

Outputs are activated 400 ms before the circuit breaker trips in the case of:

• Long-time protection

• Phase-unbalance protection

• Locked rotor protection (MicroLogic 6 E-M)

• Undercurrent protection (MicroLogic 6 E-M)

Contactor control by the output 2 signal (SD4/OUT2) optimizes continuity of service. This is also a safety feature because:

• There is a lower risk of motor deterioration.

• Activation of the output means that the application is not working normally. Abnormal operation is not the result of an anomaly or internal fault in the motorfeeder.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

• The cause of this abnormal operation can be temporary (for example, a voltage

ENGLISH

drop causing an overly long starting time).

The equipment can therefore be powered up again when the cause of the overload or unbalance has disappeared.

NOTE: To control a contactor with a consumption exceeding 80 mA, it is necessary to provide an interface (RBN or RTBT relay).

Operating Mode

The SDTAM Module incorporates an operating mode selection switch.

Figure 23 – SDTAM Operating Mode Switch

BSCM

To return the outputs to their initial state following activation:

• Manually (SDTAM switch in the OFF position) after canceling

the module power supply

• Automatically (SDTAM switch on one of the time delay

Off

adjustment settings) following a time delay (set from 1 to 15 minutes to allow for the motor cooling time).

The BSCM (Breaker Status Control Module) can send the following data using the communication bus:

• Device states (feedback from OF, SD, and SDE contacts)

• Control instructions for the communicating motor operator (opening, closing, and resetting)

• Information to assist the operator (storage of the last ten events)

Use the BSCM with all H-, J-, and L-frame circuit breakers equipped with MicroLogic electronic trip units and with the L-frame switches.

The BSCM module is required:

• With the NSX Cord

• With the communicating motor operator

Description, Installation, and Connection

To install the BSCM:

1. Plug in the module.

2. Connect the four connectors.

Figure 24 – BSCM Installation

150–250 A

BSCM Module

NSX Cord

400–600 A

Page 47

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Table 26 – BSCM Connections

No. Data Medium Data Transmitted Comments

BSCM module

microswitches

Connector for the

NSX Cord

Connector for the

MicroLogic 5 or 6 trip unit

Connector for the

communicating motor operator

State of OF and SDE contacts

Communication bus and state of SD contact through the microswitch on the NSX Cord

Communication bus

Controlling the communicating motor operator

Status of the communicating motor operator

The BSCM takes the place of the auxiliary contacts in the OF and SDE slots.

The NSX Cord goes in the SD slot instead of the auxiliary contact.

Only with MicroLogic 5 and 6 trip units.

Use the connector supplied with the communicating motor operator.

The BSCM module cannot be installed at the same time as an OF contact or the SDE contact.

The BSCM module is field installable.

Setting Up the BSCM

Setting up the BSCM on the communication bus requires no addressing.

ENGLISH

LED indication on the BSCM confirms that the BSCM is working.

Table 27 – BSCM Setup

LED Indication Information

ON: 50 ms/OFF: 950 ms Correct operation ON: 250 ms/OFF: 250 ms Addressing error ON: 1000 ms/OFF: 1000 ms Communication test (test button on the Modbus Interface Module) ON: 500 ms/OFF: 500 ms No communication with other modules ON continuously Internal error on the BSCM module OFF continuously BSCM module powered down

Data Sent and Configuration of the BSCM

To configure the BSCM on site:

• Use the RSU software

• Use a computer connected to the UTA Tester, with the tester connected:

— To the trip unit test port (MicroLogic 5 and 6 trip units) — Or to the RJ45 socket of a ULP module (Modbus Interface Module IFM or

Front Display Module FDM121)

The BSCM sends data on the operational states of the circuit breaker and its communicating motor operator (if present) in the tab.

Page 48

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Figure 25 – BSCM Data

ENGLISH

1. Data made available for all devices

equipped with a BSCM

2. Additional data made available to all devices equipped with a BSCM and a communicating motor operator

3. Simplified schematic of communicating motor operator.

For more details on the list of alarms and configuration options, see “UTA Tester Connected to a Computer with RSU Software” on page 86 and bulletin 48940-31201, MicroLogic 5 and 6 Electronic Trip Units—User Guide.

Page 49

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Data Provided by the BSCM

Table 28 – BSCM Information

Information

All Circuit Breakers with BSCM

Count of the total number of times the circuit breaker opens and closes (count of OF contact operations).

Count of the total number of times the circuit breaker opens and closes (count of OF contact operations)

Maximum number of times the device can open and close Count of the number of fault trips by the circuit breaker (count of SD contact operations) Count of the number of electrical fault trips by the circuit breaker (count of SDE contact

operations)

Circuit Breakers with BSCM and Communicating Motor Operator

Count of the number of times the communicating motor operator opens Count of the number of times the communicating motor operator closes Maximum number of times the communicating motor operator closes Count of the number of fault trips by the circuit breaker (count of SD contact operations) Count of the number of times the communicating motor operator resets

The user can modify the content of the counter if, for example, the BSCM module is installed or replaced during operation.

Overshooting the threshold results in a medium priority alarm. To acknowledge the fault, modify the content of the counter or the value of the threshold

Configuring BSCM Thresholds

Table 29 – Configuring the BSCM Thresholds

Can be Reset

Yes

ENGLISH

In the Breaker I/O tab, select the Breaking Status & Control Module window.

In the Threshold window, indicate the maximum number of times the device can open and close (for example, maximum number of operations before level IV maintenance). See “Maintaining the Circuit Breaker During Operation” on page 96.

In the Breaker I/O tab, select the Communicating Motor Operator module window (left side).

In the Threshold window, indicate the maximum number of closures for the communicating motor operator.

For more details on the indicators for MicroLogic trip units associated with a BSCM module, see the MicroLogic 5 and 6 Trip Units - User Guide.

Page 50

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

CAUTION

Configuring the Resetting of the Communicating Motor Operator

ENGLISH

HAZARD OF REPEATED CLOSING ON ELECTRICAL FAULT

Reconfiguring of the BSCM module must be done only by trained electrical personnel.

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

In the Breaker I/O tab, select the Communicating Motor Operator Module window.

Figure 26 – Communicating Motor Operator Window

• Clicking on the blue switch Enable Reset even if SDE on the schematic (the

blue switch closes) authorizes resetting of the mechanism using the communication bus even after an electrical fault trip.

• Clicking on the blue switch Enable Automatic Reset (the blue switch closes)

authorizes automatic resetting after tripping by the MN, MX release, or push-totrip button.

• Clicking on the two blue switches Enable Reset even if SDE and Enable Automatic Reset (both blue switches close) authorizes automatic resetting even after an electrical fault trip.

Page 51

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

NSX Cord

The NSX Cord connects a circuit breaker to the communication bus.

The NSX Cord can be used:

• By itself for communicating measurements and settings (only with MicroLogic 5 and 6 trip units)

• With a BSCM:

— For communicating measurements and settings (only with MicroLogic 5

and 6 trip units)

— For communicating states (with standard and advanced trip units)

For more details on integrating H-, J- and L-frame circuit breaker communication functions, see the ULP system - User Guide and the Modbus - User Guide.

Description, Installation, and Connection

The NSX Cord consists of a junction box, a cable with an RJ45 connector and a cable equipped with a screw terminal block.

Figure 27 illustrates installation of an NSX Cord:

Figure 27 – NSX Cord

ENGLISH

12 3

NSX Cord used alone

150–250 A

NSX Cord

BSCM Module

400–600 A

NSX Cord and BSCM

150–250 A

400–600 A

Table 30 – NSX Cord Connections

No. Data Medium

1 NSX Cord microswitch

Cable equipped with an RJ45 connector

for the Modbus Interface Module or the Front Display Module FDM121

Internal link to MicroLogic 5 or 6 trip unit

or the BSCM module

Data Transmitted

State of SD contact

Communication bus

Comments

The NSX Cord goes in the SD slot instead of the auxiliary contact.

Three cable lengths are available:

4.27 ft (1.3 m), 9.84 ft (3.0 m), and

14.7 ft (4.5 m). With the BSCM module, the NSX

Cord also transmits the circuit breaker states.

The NSX Cord also provides the 24 Vdc power supply:

• for the MicroLogic 5 or 6 trip unit (without BSCM module)

• for the BSCM module (when this module is installed)

The NSX Cord is field installable. NOTE: The NSX Cord cannot be installed at the same time as the SD contact.

Page 52

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Communication with the NSX Cord

ENGLISH

The NSX Cord connects:

• directly to the Modbus Interface Module IFM

• using the Front Display Module FDM121 (see bulletin 48940-312-01, MicroLogic 5 and 6 Electronic Trip Units—User Guide)

For additional information see Bulletin 0611IB1302: Modbus Communication Guide.

Table 31 – NSX Cord Connections

NSX Cord (B) on its own connected directly to the Modbus Interface Module IFM (A)

NSX Cord (B) connected to the BSCM module (C) and directly to the Modbus Interface

NSX Cord (B) connected to the BSCM module (C) and to the Modbus IFM (A) using the Front Display Module FDM121 (D)

Module IFM (A)

Page 53

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

1 2

Control Auxiliaries

Control and Indication Contacts Installed Outside the Circuit Breaker

Control and indication contacts installed outside the case are contacts for specific applications (see the PowerPact H-, J-, and L-Frame Circuit Breaker catalog).

Table 32 – Contacts Installed Outside the Circuit Breaker

Early-operation contacts Install in the rotary handle:

CAM contacts

Carriage switches

Figure 28 – Operation of Connected/Disconnected Carriage Switches

• Early-make contacts (CAF1, CAF2) actuate before the poles

close when a circuit breaker manual command is given.

• The early-break changeover contact (CAO1) actuates before

the poles open when a circuit breaker manual command is given.

Connected (CE)/Disconnected (CD) carriage switches Install on the chassis to indicate the position of the circuit breaker

in the chassis:

1. Connected position carriage switch (CE)

2. Disconnected position carriage switch (CD)

ENGLISH

Voltage Releases

CE Connected-position carriage switch

CD Disconnected-position carriage switch

Use voltage releases to trip circuit breakers deliberately using an electrical signal. Install these auxiliaries in the case under the front face.

Table 33 – Voltage Releases

Undervoltage release This release:

• Trips the circuit breaker when the supply voltage in its control

MN Release

Time-Delay Unit

MX Release

circuit falls below a value between 0.35 times and 0.7 times nominal voltage

• Closes the circuit breaker again once the voltage reaches 0.85

times nominal

Use this type of trip unit for fail-safe emergency stops.

Time-delay unit for MN release The time-delay unit eliminates nuisance tripping of an undervoltage

release due to transient voltage dips lasting < 200 ms. There are two types of time-delay units: adjustable or fixed.

Shunt trip This release causes the circuit breaker to open on the appearance

of a voltage exceeding 0.7 times nominal voltage.

Page 54

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Other Accessories

ENGLISH

Accessories for Safety

A comprehensive accessories offer is available for H-, J-, and L-frame circuit breakers. Accessories are field-installable on site to improve safety and ease of operation.

Figure 29 – Other Safety Accessories

Sealed boot for the handle, providing IP43 protection on the front

For more details on the accessories offer, see the PowerPact H-, J-, and L-Frame Circuit Breaker catalog.

Summary Tables of Auxiliaries

Slots for Control and Indication Auxiliaries

Figure 30 – H- and J-Frame

Circuit Breaker Accessory Slots

2 1

4 3

Tables 34 and 35 show the possible slots for the auxiliary devices mounted in the case. Only one auxiliary can be installed per slot. (For further details see catalog 0611CT1001, PowerPact H-, J- and L-Frame Circuit Breakers).

Table 34 – H- and J-Frame Circuit Breaker Accessory Locations

Accessory

Standard remote indication and control auxiliaries

OF1 X OF2 X SD X SDE X MN X MX X

Specific remote indication (MicroLogic trip units)

SDx or SDTAM X X 24 Vdc Power Supply X

Communication

BSM X X NSX Cord X

Communication with Modbus Interface Module (MicroLogic trip unit)

NSX Cord X For MicroLogic trip units only.

Short terminal shields, providing IP40 protection

Slot

1 2 3 4 5

Flexible interphase barriers improving isolation between power connections

Comments

For all trip unit types and control types (handle, rotary handle, or motor operator).

For MicroLogic trip units only.

For sending OF, SDE (BSCM) and SD (NSX Cord) data to the communication bus.

Example: The SDx remote indication option cannot be installed at the same time as an MN or MX release and the OF1 contact.

Page 55

Section 2—Electrical Accessories and Auxiliaries PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Figure 31 – L-Frame Circuit

Breaker Accessory Slots

3 2

Table 35 – L-Frame Circuit Breaker Accessory Locations

Name

Standard remote indication and control auxiliaries

OF1 X OF2 X OF3 X OF4 X SD X SDE X

SDV Reserved X MN X MX X

Specific remote indication (MicroLogic trip units)

SDx or SDTAM X X 24 Vdc Power Supply X

Communication

BSM X X NSX Cord X

Communication with Modbus Interface Module (MicroLogic trip unit)

NSX Cord X For MicroLogic trip units only.

Available on unit-mount circuit breakers only. Cannot be used with the FWBS lug.

Slot

Comments

1 2 3 4 5 6 7 8 9

For all trip unit types and control types (handle, rotary handle, or motor operator).

For MicroLogic trip units only.

For sending OF, SDE (BSCM) and SD (NSX Cord) data to the communication bus.

ENGLISH

Page 56

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 2—Electrical Accessories and Auxiliaries

Operation of the Auxiliary Indication Contacts

ENGLISH

Table 36 – Position of Indication Contacts Relative to Position of the

Actuator and Main Contacts

Tripped

Tripped By:

MN/MX PT

Trip Unit

OFF

L S I V G

Name

OF X SD X X X X X X X SDE X X X X X

SDV

SDx Outputs

OUT1 SDT X

PAL X

OUT2

SDG X

SDTAM Outputs

OUT1

Early make/ break SDT

OUT2 X X X X X X X X X = Contact Closed O = Early-Make Output (400 ms)

PT: Push-to-Trip

L: Long-Time Protection S: Short-Time Protection I: Instantaneous Protection V: Vigi Protection, L-Frame Only G: Ground-Fault Protection

Available on unit-mount circuit breakers only. Cannot be used with the FWBS lug.

Position of Indication Contacts

NOTE: The indication auxiliary (changeover) contacts are represented in the switchboard by the state of the Normally Open (NO) contact. The state of the NO contact is open:

• For NO contacts, when the circuit breaker is in the O (OFF) position

• For SD, SDE, and SDV contacts, when the associated function is not active

Figure 32 – Indication Auxiliary Contacts

A. Main contacts B. Position of OF

changeover contacts

Page 57

Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Section 3— Description of Trip Units

This section describes the adjustment, metering, indication, and communication functions of the MicroLogic™ electronic trip units in the PowerPact™ H-, J-, and Lframe circuit breaker range.

Fault Currents and Trip Units

Applications

Figure 33 – Two Main Types of Applications Requiring Protection

The circuit breaker trip units offer protection for all applications due to the great flexibility of their settings.

Two types of applications are considered:

ENGLISH

• Electrical distribution protection

• Special protection for receivers (such as motors or transformers) or generators

Fault Currents in Electrical Distribution

There are four types of fault current, divided into two categories:

• The overcurrent category: — Overload currents — Short-circuit currents

• The insulation fault category:

— Low intensity insulation faults — High intensity insulation faults

Overcurrent Category The main characteristics and associated risks of the overcurrent category are:

• Overload currents are usually due to problems with excessive loads. For example, too many loads in a workshop at the same time (heating, lighting, power) can bring about an electrical distribution overload. The main risks from overload currents are a gradual deterioration in equipment, or a fire.

• Short-circuit currents are usually due to a deterioration in the system, for example a short-circuit between two phases in the winding of a motor operating in severe conditions (vibration, damp, or corrosive atmosphere). The risks associated with short-circuit currents are equipment damage, a fire, or even an explosion due to the high energy level at the site of the fault.

Page 58

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

Insulation Fault Category Insulation faults can be due to the deterioration of plant, equipment, or conductors

ENGLISH

(for example, operating in damp conditions).

The intensity of such fault currents depends on the ground wiring diagram used. These currents can be:

• Very low in value, that is, well below the nominal feed current in the system (leakage currents or residual ground-fault currents)

• High in value, that is, identical to a short-circuit current in the system (groundfault currents)

Any ground-fault current presents a grave risk of electrocution or fire.

Overcurrents Protection in Electrical Distribution

Overcurrent Trip Units H-, J-, and L-frame circuit breaker trip units handle overcurrents (overload currents

and short-circuit currents) and in certain cases ground-fault currents.

• Pickup adjustments are calculated relative to the downstream circuit being protected.

• Time delay adjustments are calculated in relation to the protection management (coordination).

NOTE: The protection plan is based on coordination of the protections. Coordination is achieved by time delays (time-related selectivity) while complying with ammeter- and power-related selectivity rules.

Standard Settings for Overcurrent Protection

There are two types of trip units:

• Thermal-magnetic trip units for H- and J-frame circuit breakers

• MicroLogic electronic trip units for H-, J-, and L-frame circuit breakers

Table 37 – Circuit Breaker Protection Functions Trip Characteristics

t constant):

Long-time protection (L)

Short-time protection (S)

Instantaneous protection (I)

Long-time protection is of the inverse time type (with I

• No trip for a current below 105% of the long-time protection pickup I

• Trip in less than two hours for a current equal to:

—120% of Ir for an electronic trip unit —130% of I

For a higher fault current, the trip time is inversely proportional to the fault current value.

Short-time protection is time-independent:

• No trip for a current below 80% of the short-time pickup setting I

• Trip for a current equal to 120% of the short-time pickup setting I

The trip time tsd is:

• Less than 0.2 seconds for a short-time protection with no time delay

• Equal to the value of the time delay t

Instantaneous protection Ii is time-independent:

• No trip for a current below 80% of the instantaneous setting

• Trip for a current equal to 120% of the instantaneous setting

The trip time is less than 0.2 seconds.

for a thermal-magnetic trip unit

for a protection with time delay

Page 59

Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Protecting the Conductors The installation rules closely define the type of protection required, considering:

• Potential overcurrents (overloads and short-circuits)

• Conductors being protected

• Simultaneous cut off of current to all conductors (single-pole breaking) NOTE: All three of the phase conductors must be protected at all times. In some

special applications, the phase protection can protect the neutral conductor (if it is distributed and identical to the phases in size, that is, full neutral).

The Neutral Protection The neutral should have specific protection if:

• It is reduced in size compared to the phases

• Nonlinear loads generating third order harmonics are installed

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

To summarize, the neutral conductor can be:

• Non-distributed (3P)

• Distributed, not cut off, and not protected (3P)

• Distributed, not cut off but protected (3P with ENCT option) (see bulletin 48940312-01, MicroLogic 5 and 6 Electronic Trip Units - User Guide)

• Distributed, cut off, and protected (4P)

ENGLISH

H-, J-, and L-frame circuit breaker trip units are suitable for all protection types.

Table 38 – Circuit Breaker Neutral Protection

Circuit Breaker Possibilities Neutral Protection

3P 3P, 3D None

3P + ENCT

P: Pole D: Trip unit N: Neutral protection

Use OSN (Oversized Neutral) protection when high third harmonic (and multiples of the third harmonic) currents are present. Install OSN protection on MicroLogic 5 and 6 trip units (see bulletin 48940-312-01, MicroLogic 5 and 6 Electronic Trip Units - User Guide).

Protection Against Insulation Faults

Protection against insulation faults is provided by:

• Earth-leakage protection in the case of low intensity fault currents

• Ground-fault protection in the case of high intensity fault currents

3P, 3D None 3P, 3D + N/2 Half neutral 3P, 3D + N Full neutral 3P, 3D + OSN

Oversized neutral

Page 60

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

Earth-Leakage Protection (L-Frame Circuit Breakers

ENGLISH

Only)

Figure 34 – Vigi Module

The Vigi module, which is external to the trip unit, provides earth-leakage protection. Install the Vigi module on Lframe circuit breakers equipped with MicroLogic electronic trip units.

Installation standards require particular sensitivity and trip time values for earthleakage protection:

Table 39 – Values of Δt and IΔn

Type of Protection IΔn Δt Installation Standards

Protection against direct contact

Fire protection

Protection against indirect contact

Value of Δt for a fault current 10 IΔn

30 mA 40 ms

300 mA or 

500 mA

IΔn 1 s

40 ms

Required

Required if necessary

Lowest possible recommended values of IΔn and Δt (the value of IΔn depends on the ground resistance)

Ground-Fault Equipment Protection (G)

Ground-fault equipment protection is incorporated in MicroLogic 6 trip units (see bulletin 48940-312-01, MicroLogic 5 and 6 Electronic Trip Units - User Guide).

Installation standards require or recommend the pickup and trip time values for ground-fault protection.

The ground-fault protection system causes the service disconnect to open all ungrounded conductors of the faulted circuit. The maximum setting of the groundfault protection is 1200 A, and the maximum time delay is one second for groundfault currents equal to or greater than 3000 A.

Protection for Motor-Feeders

Structure of a Motor Feeder Direct-on-line starting is the most widely used type of motor-feeder.

The direct-on-line starting motor-feeder can comprise up to four different items of switchgear, providing one or more functions. It must also incorporate the specific characteristics of the application.

Figure 35 – Motor Feeders

1. Switchgear for short-circuit protection

2. Control gear

3. Switchgear for overload protection

4. Switchgear for insulation fault protection

5. Characteristic t = f(I) of an asynchronous

DOL starting motor

6. Starting phase

7. Current peak on activation

Page 61

Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Characteristics A motor-feeder protects contactors and motor-feeders by:

• Coordination of motor-feeder protections

• Thermal relay trip classes

• Insulation coordination

Coordination There are two types of coordination:

• In type 1 coordination, deterioration of the contactor and relay is accepted if both:

— The contactor or starter does not represent a danger to persons or

installations

— The starter can operate correctly when parts have been repaired or

replaced

• In type 2 coordination, some slight soldering of the contactor starter contacts is allowed if, following type 2 coordination tests:

— They are easy to separate — The control and protection switchgear functions then work without the need

for repair

ENGLISH

Thermal Relay Trip Classes Figure 37 – Trip Classes

To ensure type 2 coordination, standards require three I

fault current tests

intended to check that the equipment performs correctly in overload and shortcircuit conditions.

Figure 36 – Overload and Short-Circuit Conditions

1. Overload zone Id < 10 In

2. Impending short-circuit zone

< Id < 50 In

10 I

3. Short-circuit zone

> 50 In

The four thermal relay trip classes are 5, 10, 20, and 30 (values correspond to the maximum relay trip time in seconds at 7.2 I

Table 40 – Trip Class Values

Class 1.05 I

5 t > 2 h t < 2 h t < 2 min 0.5 s = t = 5 s 10 t > 2 h t < 2 h t < 4 min 4 s = t = 10 s 20 t > 2 h t < 2 h t < 8 min 6 s = t = 20 s 30 t > 2 h t < 2 h t < 12 min 9 s = t = 30 s

1.2 I

1.5 I

7.2 I

Classes 5 and 10 are most common. Classes 20 and 30 apply to applications in which motor starting conditions are difficult.

Page 62

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

Additional Protection Depending on the application and the operating constraints, additional protection

ENGLISH

may be required concerning:

• Phase unbalance or phase loss

• Locked rotor

• Undercurrent

• Long starts

Motor Circuit Breakers H-, J-, and L-frame motor circuit breakers have MicroLogic Type M electronic trip

units.

Table 41 – Protection Functions by Trip Unit Type

Trip Unit Long-Time Protection

Protection

Overloads — X X Short circuits X X X Insulation faults

(ground-fault protection) Phase unbalance or phase loss — X X Locked rotor

Undercurrent Long starts

MicroLogic 1.3 M MicroLogic 2 M MicroLogic 6 E-M

— — X

— —

Trip Unit Type

X X X

The protection against insulation faults in the MicroLogic 6 E-M trip unit is the ground-fault protection type. All H-, J-, and L-frame motor circuit breakers have had Type 1 and 2 coordination tests done with motor-feeder components.

Table 42 – Trip Classes by Trip Unit Type

Class

5 — X X 10 — X X 20 — X X 30 — — X

The pickup setting I

MicroLogic 1.3 M MicroLogic 2 M MicroLogic 6 E-M

for trip unit long-time protection is in amperes:

Trip Unit Type

• This value corresponds to the operating current used in the motor application

• The maximum

setting corresponds to the sensor rating In

Page 63

Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

1.5

2.5

.93

.94

.98

.97

100

125

140

160

225

200

175

Isd

(x Ir)

Ir (x Io

)

Io (A

)

%Ir

>30

>11

before diélectric test remove this cover

vigi

A100NHL A250NHL

100/520V-50/60Hz

-25

0,03(∆

t=0)

310

∆

t(ms)

0,3

∆n(A)

HS 0,03(∆t=0)

0,03(∆

t=0)

310

∆

t(ms)

0,3

∆n(A)

HS 0,03(∆t=0)

Vigi Earth-Leakage Protection Module (L-Frame Circuit Breakers Only)

Use the Vigi earth-leakage protection module to provide protection against very low value insulation fault currents. If there is a fault, this earth-leakage protection module causes the circuit breaker to trip very rapidly by acting directly on the circuit breaker mechanism.

Earth-leakage protection by the Vigi module is provided for L-frame circuit breakers by adding a Vigi MB module (low sensitivity)

Vigi Face

The settings and controls are on the front face of the Vigi module.

Figure 38 – Vigi Face

A. Faceplate label B. Test pushbutton C. Reset pushbutton D. Intentional delay adjustment dial: Δt E. Sensitivity pickup adjustment dial: IΔn F. Protective cover for settings

ENGLISH

Installation

Install the Vigi module on the trip unit. Use an intermediate terminal shield to provide protection against direct contact with the circuit breaker downstream connection block.

Install a Vigi module on circuit breakers with:

• a handle

• a rotary handle

• a motor operator

Install a circuit breaker with Vigi module on a mounting plate, chassis, or base. Vigi modules cannot be used on I-line circuit breakers or with FWBS lugs.

Page 64

PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

DANGER

Setting the Earth-Leakage Protection

ENGLISH

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Adjustments to Vigi module must be done only by trained electrical personnel.

Failure to follow these instructions will result in death or serious injury.

The Vigi module protects personnel and equipment.

Figure 39 – Setting the Vigi Module IΔn Dial

Set the sensitivity (IΔn) using the dial on the front face. The sensitivity value is in amperes.

Setting the Intentional Delay

Set the intentional delay (Δt) with the dial on the front face.

Figure 40 – Setting the Vigi Module Δt Dial

Table 43 – Setting Values for Vigi MB Module

Testing and Resetting

A test pushbutton (T) is on the front of the circuit breaker. Pressing this test button creates a real ground fault that fully tests the device.

The intentional delay value is in milliseconds.

IΔn (A) Δt (ms)

0.03 0 1 60 3 150

10 310 30 —

NOTE: Test the earth-leakage protection at regular intervals (every six months). Many installation standards require these periodic tests.

After an insulation fault trip, the circuit breaker cannot be closed again until the Vigi module has been reset by pressing the reset pushbutton (R).

Page 65

Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Insulation and Dielectric Strength Tests

There is a specific procedure for carrying out the insulation and dielectric strength tests on equipment with a Vigi module (see “Startup” on page 93).

Sealing Accessories for Earth-Leakage Protection

Use sealing accessories to prevent the following operations:

Table 44 – Sealing Accessories

Seal Description Prohibited Operation

Seals Vigi module fixing screw Dismantling of the Vigi module

Seals transparent protective cover for the settings

MicroLogic Electronic Trip Units

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Modification of the Vigi module settings

This section describes the MicroLogic electronic trip units used on all H-, J-, and Lframe circuit breakers.

Characteristics of MicroLogic Electronic Trip Units

MicroLogic electronic trip units provide the following functions:

• Protection of the electrical distribution or specific applications

• Measurement of instantaneous values and measurement of average values (demand) for electrical quantities

• Kilowatt hour metering

• Operational assistance (such as peak demand, customized alarms, or operation counters)

• Communication

Figure 41 – Electronic Trip Unit Front Face

10 12

Ii (x In)

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

Identification Identify the trip unit installed on the circuit breaker by the four characters on the

ENGLISH

front face:

MicroLogic 6.3 E-M

X.Y Z-T

Table 45 – Identification of MicroLogic Electronic Trip Units

Protection (X)

Switch

LI/LSI

LSI

LSIG

Frame Size (Y) Measurements (Z) Application (T)

60/100/150/250 A

400/600 A

Ammeter

Energy

Distribution

—

Distribution with Short-Time

Protection

Motor

Examples MicroLogic 1.3 I 400/600 A Distribution MicroLogic 3.3 LI 400/600 A Distribution MicroLogic 3.3S LSI 400/600 A Distribution MicroLogic 2.3M LS 400/600 A Motor MicroLogic 5.2A LSI 60/100/150/250 A Ammeter Distribution MicroLogic 5.3E LSI 400/600 A Energy Distribution MicroLogic 6.3 E-M LSIG 400/600 A Energy Motor

I: Instantaneous L: Long time S: Short time G: Ground fault

Distribution Trip Unit Table 46 defines the protection functions for distribution type MicroLogic trip units:

Table 46 – Distribution-Type MicroLogic Trip Units

In=60

10 12

Ii (x In)

In=60

Isd

t ON/OFF

I2t ON/OFF

tsd

Parameter Description

tr Long-time protection time delay O O X X I

t ON/OFF

Functions

X = Adjustable O = Fixed — = Not present

MicroLogic1

3 3S 5 6

Sensor rating O O O O Long-time protection pickup

Short-time protection pickup Short-time protection time delay — O X X Short-time protection I2t curve in ON or

OFF position

Instantaneous protection pickup

Ground-fault protection pickup Ground-fault protection time delay — — — X

Ground-fault protection I

t curve in ON or

OFF position

X X X X

— X X X

— — X X

X X X X

— — — X

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Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Motor Trip Units Table 47 defines the protection functions for MicroLogic type M trip units:

Table 47 – Type M MicroLogic Trip Units

Iunbal

tunbal

FLA Min/Max

Class

Isd

tsd

160/320A

Parameter Description

MicroLogic1

2 M 6 E-M

FLA Min/Max FLA adjustment range FLA Full load amp setting — X

Cl Long-time protection trip delay

unbal

Functions X = Adjustable O = Fixed — = Not present

Short-time protection pickup Short-time protection time delay O O Ground-fault protection pickup Ground-fault protection time delay — X Phase-unbalance protection pickup — X

Phase-unbalance protection time delay — X

FLA

O O

— X

X X

— X

Motor type M trip unit (in particular MicroLogic 6 E-M) also incorporate additional protection for the motor application. For more details, see the MicroLogic 5 and 6 Trip Units—User Guide.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

Indication LEDs Indication LEDs on the front of the trip unit indicate its operational state.

ENGLISH

The number of LEDs and their meaning depend on the type of MicroLogic trip unit.

Table 48 – Indication LEDs

Type of MicroLogic Trip Unit Description

Distribution

Motor

• Ready LED (green): Blinks slowly when the electronic trip unit

is ready to provide protection.

• Overload pre-alarm LED (orange): Shows a steady light

when the load exceeds 90% of the I

• Overload alarm LED (red): Shows a steady light when the

load exceeds 105% of the Ir setting.

• Ready LED (green): Blinks slowly when the electronic trip unit

is ready to provide protection.

• Overload temperature alarm LED (red): Shows a steady light

when the motor thermal image exceeds 95% of the I

The MicroLogic 1.3 M trip unit, which provides short-time protection only, displays the Ready LED (green).

setting.

The indication LEDs are reliable for circuit breaker load currents:

• above 15 A on a MicroLogic trip unit rated 40 A

• above 30 A on MicroLogic trip units rated > 40 A

This limit value is on the front panel, above the Ready LED of the MicroLogic trip unit.

setting.

To activate the Ready LED when the load current is below the limit value, you can:

• Install a 24 Vdc external power supply module

• Or, during maintenance, connect the Pocket Tester (see “Pocket Tester” on

NOTE: If the pre-alarm and alarm LEDs keep lighting up, perform load shedding to avoid tripping due to a circuit breaker overload.

Test Port

MicroLogic trip units come with a test port specifically for testing trip unit operation (see “Testing MicroLogic Trip Units” on page 79).

Figure 42 – Test Port

page 80) to monitor the trip unit.

This port is designed for:

• Connecting the Pocket Tester for local MicroLogic testing

• Connecting the UTA Tester for testing, setting the MicroLogic trip unit, or for installation diagnostics

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Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Upgradability of MicroLogic Trip Units

Figure 43 – Trip Unit Screws

On site replacement of trip units is simple:

• No connections to make

• No special tools (for example, calibrated torque wrench)

• Compatibility of trip units ensured by mechanical cap

• Torque limited screw ensures correct torque

The simplicity of the replacement process means that it is easy to make the necessary adjustments as operation and maintenance processes evolve.

NOTE: The screw head is accessible when the trip unit is installed, so the trip unit can still be removed.

Sealing the Protection Seal the transparent cover on MicroLogic trip units to prevent modification of the

protection.

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Figure 44 – Sealing the Trip Unit

On MicroLogic 5 and 6 trip units, it is possible to use the keypad, with the cover sealed, to read the protection settings and measurements.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

3.2

Ir (A) tr @ 6 Ir

Ii (x In)

4 2 1

1.5

4 3 2

IHG

In=60A

MicroLogic 3 Electronic Trip Unit

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Figure 45 – Trip Unit Front Face

Use the MicroLogic 3 electronic trip unit to protect conductors in commercial and industrial electrical distribution.

The adjustment dials and indications are on the front face.

MicroLogic 3.2

A. Sensor rating I B. Adjustment dial for long-time protection pickup I C. Adjustment dial for long-time protection delay t D. Adjustment dial for instantaneous protection pickup I E. Trip curve F. Test port G. Ready LED (green) H. Overload pre-alarm LED (orange): 90% I I. Overload alarm LED (red): 105% Ir The trip unit’s In rating

corresponds to the maximum value of the adjustment range.

Setting the Long-Time Protection

Set the long-time protection pickup dial to the value I amperes on the dial). The maximum setting on the preset dial equals the sensor rating In.

Set the long-time protection time delay t

3.2S or 3.3S).

The precision range is - 20%, + 0%.

MicroLogic 3.2S

IHG

Ir (A) Isd (x In)

A. Sensor rating I B. Adjustment dial for long-time protection pickup I

C. Adjustment dial for short-time protection pickup I D. Adjustment dial for instantaneous protection pickup I E. Trip curve F. Test port G. Ready LED (green) H. Overload pre-alarm LED (orange): 90% I I. Overload alarm LED (red): 105% I

corresponds to the maximum value of the adjustment range.

dial to the tr desired (tr is not adjustable on

In=60A

4 3 2

1.5

Ii (x In)

The trip unit’s In rating

desired (displayed in

3.2S

tsd

Ir Isd

B C

D E

Setting the Short-Time Protection

Setting the Instantaneous Protection

MicroLogic 3.2S and 3.3S trip units have adjustable short-time protection. Set the short-time protection pickup dial to the multiple of I setting value is 1.5 I

(minimum dial value).

desired. The default Isd pickup

MicroLogic 3.2 and 3.3 trip units have factory-set short-time protection, it cannot be adjusted.

The time delay t

for short-time protection is factory-set at:

• Non-trip time: 20 ms

• Maximum breaking time: 80 ms

Set the pickup I

for instantaneous protection using the Ii dial. Turn the Ii adjustment

dial to the value required.

The precision range is +/- 15%.

The time delay for instantaneous protection cannot be adjusted. It is factory set at:

• Non-trip time: 0 ms

• Maximum breaking time: 50 ms

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Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

225

200

175

4 3 2

1.5

250

Ir (A)

110

79 71

58 130

119

FLA (A)

.4 .3

OFF

125

150

100

Ii (x In)

6.2 E-M

Micrologic

5.2 A

MicroLogic 5 (LSI) and 6 (LSIG) Electronic Trip Units

MicroLogic 5 and 6 electronic trip units provide protection adaptable to all types of application. They incorporate measurement, operation, and maintenance assistance functions and communication functions as standard. The information given in this guide is a summary. For more detailed information on the operation of MicroLogic 5 and 6 trip units, refer to the MicroLogic 5 and 6 Electronic Trip Units - User Guide.

Figure 46 – Front of a MicroLogic 5.2 A Trip Unit for 3P Circuit Breaker

ENGLISH

30 40

25 20

4 3 2

1.5

Ii (x In)

45 50

10 12

A. Indication LEDs

B. Test Port C. Dials for presetting protection functions and

Microswitch for locking protection setting D. LCD display E. Navigation keypad

Indication LEDs Indication LEDs indicate the operational state of the trip unit (see “Indication LEDs”

on page 66).

Test Port The test port is specifically for trip unit testing (see “Test” on page 66). Dials and Microswitch Use the two dials to preset the protection parameters. Use the microswitch to lock

and unlock the protection parameter settings.

Figure 47 – Presetting Dials

MicroLogic 5 Trip Unit

MicroLogic 6 Trip Unit

A. Pickup (Ir) preset dial for all MicroLogic

trip unit types

B. Instantaneous protection pickup (Ii)

preset dial (MicroLogic 5 only)

C. Ground-fault protection pickup (I

)

preset dial (MicroLogic 6 only)

D. Microswitch for locking/unlocking the

protection parameter settings

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

LCD Display The display provides all information necessary to use the trip unit. The list of

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protection parameters depends on the MicroLogic trip unit type: 5, 6, or 6 E-M.

Figure 48 – LCD Display

1. Five mode definition pictograms

2. Up arrow points to protection parameter being set

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

MicroLogic 5:

MicroLogic 6:

MicroLogic 6 E-M:

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

Ir tr Isd tsd Ii (x In)

Ir tr Isd tsd Ii Ig tg

FLA CI Y Isd Iunbal tunbal Ijam tjam Ig tg

Keypad Use the 5-button keypad for navigation.

Button Description

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

Locking/Unlocking the Protection Parameter Settings

Mode

The protection parameter 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 unit indicates whether the protection parameter settings are locked:

Display Description Description

Padlock locked. The protection settings are locked.

Padlock unlocked. The protection settings are unlocked.

To unlock the protection parameter settings, open the transparent cover and:

• press the locking/unlocking microswitch, or

• actuate one of the adjustment dials.

To lock the protection parameter settings, press the unlocking microswitch again.

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Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

The protection parameter settings also lock automatically five minutes after the MicroLogic keypad is last pressed.

Mode Definition Figure 49 – Mode

Pictograms

Metering

Readout

Protection

Setting

Locking

The information accessible on the MicroLogic display is split between different modes.

The modes that are accessible depends on whether the protection settings are locked.

Select a mode by successive presses on the Mode button. The modes scroll cyclically.

Press the unlocking/locking microswitch to switch between readout mode and setting mode.

Padlock Pictograms Mode Accessible

• Instantaneous measurement readout

• Kilowatt hour meter readout and reset

Locked

Max Reset? OK

Peak demand readout and reset

Protection function readout

Neutral status readout

• Instantaneous measurement readout

• Kilowatt hour meter readout and reset

ENGLISH

Unlocked

Max Reset? OK

Peak demand readout and reset

Protection function setting

Neutral status setting

Screensaver The MicroLogic display unit automatically reverts to a screensaver five minutes

after the last action on the keypad or dials.

The screensaver displays the current intensity of the most heavily loaded phase (reading instantaneous measurements mode).

MicroLogic 5 (LSI) Trip Unit:

Setting the Long-Time Protection

Set the long-time protection pickup Ir using the 9-setting preset dial and the keypad.

Use the preset dial to preset the pickup to the value I

(displayed in amperes on the

dial). The maximum setting on the preset dial equals the trip unit sensor rating I Then fine-tune the pickup Ir using the keypad.

1. Turn the I

2. Access the I

preset dial higher than the value required.

screen in parameter setting mode (padlock open).

3. Using the keypad, set Ir to the exact value required (in steps of 1 A).

4. Confirm the setting by pressing the OK button twice.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

Set the time delay tr directly using the keypad.

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1. Switch to setting mode (padlock open) and access the t

setting screen.

2. Using the keypad, set tr to the value required: 0.5 s, 2 s, 4 s, 8 s, 16 s.

3. Confirm the setting by pressing the OK button twice.

Setting the Short-Time Protection

Set the short-time protection pickup I

1. Access the I

screen in setting mode (padlock open).

2. Using the keypad, set I of 0.5 Ir).

3. Confirm the setting by pressing the OK button twice.

Set the time delay t

option I

t ON.

using the keypad. The same setting is also used for selecting

1. Switch to setting mode (padlock open) and access the t

2. Using the keypad, set tsd to the desired value (0.0 s, 0.1 s, 0.2 s, 0.3 s, or 0.4 s with or without I

3. Confirm the setting by pressing the OK button twice.

Setting the Instantaneous Protection

Set the instantaneous protection pickup I

1. Switch to setting mode (padlock open) and access the I

2. Using the keypad, set Ii to the value required (range: 0.5–12 In in steps of 0.5

)

3. Confirm the setting by pressing the OK button twice.

MicroLogic 6 Trip Unit: Setting the Protection

Set the overcurrent protection on the MicroLogic 6 trip unit in the same way as for the MicroLogic 5.

using the keypad.

to the exact value required (from 1.5 to 10 Ir, in steps

setting screen.

t ON).

using the keypad.

setting screen.

The MicroLogic 6 trip unit incorporates ground-fault protection; both pickup and time delay can be adjusted.

Setting the Ground-Fault Protection

Set the ground-fault protection pickup I

1. Access the I

screen in setting mode (padlock open).

using the keypad.

2. Using the keypad, set Ig to the exact value required (in steps of 0.05 In up to 0.2 In).

3. Confirm the setting by pressing the OK button twice.

Set the time delay t

using the keypad. Use the same setting for selecting option I2t

ON.

1. Switch to setting mode (padlock open) and access the setting screen t

2. Using the keypad, set t

to the desired value

(0.0 s, 0.1 s, 0.2 s, 0.3 s, or 0.4 s - with or without I2t ON).

3. Confirm the setting by pressing the OK button twice.

Neutral Protection Neutral protection is not incorporated in the trip unit. It is effected by phase tripping.

MicroLogic 5 and 6 trip units incorporate the ENCT function to provide dedicated neutral protection. In the setting mode, it is necessary to:

• Declare whether the neutral must be protected

• Indicate the protection setting value

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Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

400A

4400

4000

3200

3600

2800 2400

2000

4800

Isd (A)

This requires the installation of an on demand external sensor (for more details on sensor characteristics, see the PowerPact H-, J-, and L-Frame Circuit Breakers catalog).

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Setting the Neutral Protection

Setting on the screen allows a choice of four values for the neutral protection pickup.

Table 49 – Neutral Protection Screen Setting

Screen Setting

0 0 0

0.5 I 1 I OSN or 3P 1.6 I

The time delays for the long and short-time protections are the same as the time delay for the phases.

NOTE: MicroLogic 5 and 6 trip units incorporate the OSN function, which manages the neutral protection when harmonic currents in multiples of three are present.

For more details, see the MicroLogic 5 and 6 Trip Units - User Guide.

MicroLogic 1.3 M Electronic Trip Unit

The MicroLogic 1.3 M electronic trip unit with high short-time protection pickup provides motor-feeders with short-circuit protection.

Use the MicroLogic 1.3 M electronic trip unit to create a type 1 or type 2 coordination motor-feeder.

Setting or Adjustment Range

Ir Isd

/ 2 I

1.6 I

/ 2

The adjustment dial and indication are on the front face.

Figure 50 – MicroLogic 1.3 M Trip Unit Front Face

1. MicroLogic trip unit adjustment range

2. Adjustment dial for the short-time protection pickup I

3. Instantaneous protection pickup Ii

4. Test port

5. Ready LED (green)

Two ratings are available: 400 A and 600 A.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

Isd (A)

2000

2800 2400

3600

3200

4400

4000

4800

Setting the Short-Time Protection

ENGLISH

Set the short-time protection pickup Isd using a 9-setting dial.

Figure 51 – Short-Time Protection

Table 50 – Short-Time Protection I

and Instantaneous Protection I

Sensor Size In Isd Dial Values (A) Ii (A)

400 A 2000 2400 2800 3200 3600 4000 4400 4800 4800 4800 600 A 3000 3600 4200 4800 5400 6000 6600 7200 7200 7200

The precision range is +/- 15%.

Example of Application The following is an example of a motor-feeder application:

• Power supplied by a 1,250 kVA transformer, 400 V, 4%

• Downstream power supply to a motor-feeder with the following characteristics:

— Three-component motor-feeder (circuit breaker, thermal relay, contactor) — Direct-on-line starting — Motor power 160 kW (I

= 280 A)

— Type two coordination

Figure 52 – Installation Diagram

Turning the pickup Isd adjustment dial (1) modifies the curves as shown (2).

1250 kVA, 400 V, 4%

110

400 A Circuit Breaker MicroLogic 1.3 M Trip Unit

Use calculations performed on the installation in accordance with the regulations to determine the characteristics of the appropriate H-, J-, and L-frame circuit breakers to install (calculations performed using the Ecodial software).

Table 51 – Circuit Breaker Selection

Installation Circuit Breaker Comments

In = 280 A J-frame, 400 A with MicroLogic 1.3 M 320 Motor circuit breaker, case size

= 28.5 kA F

= 18.3 kA — —

k min

Read the Icu performance from faceplate label

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Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Isd (x FLA)

190

310

290

270

250 230 210

FLA (A)

190/348A

Class.

348

330

Isd (x FLA)

114

181

172

163

155 145 137

FLA (A)

114 /217A

Class.

217

210

Table 52 – Trip Unit Protection

Installation Trip Unit Setting Comments

The I

protection setting is compatible with:

= 18.3 kA

k min

Inrush current = 14 In

Isd = 4,160 A

• Transient startup currents

• Short-circuit protection

MicroLogic 2 M Electronic Trip Unit

The MicroLogic 2 M electronic trip unit is suitable for protecting motor-feeders on standard applications. The thermal trip curves are calculated for self-ventilated motors.

Use the MicroLogic 2 M electronic trip unit to create a type 1 or type 2 coordination motor-feeder.

The adjustment dials and indications are on the front face of the trip unit.

Figure 53 – MicroLogic 2 M Trip Unit Front Face

MicroLogic 2.3 M

ENGLISH

Setting the Long-Time Protection

MicroLogic 2.2 M

A. MicroLogic 2.2 M/2.3 M electronic trip unit adjustment range B. Adjustment dial for the long-time protection pickup I

C. Selection dial for the long-time protection time delay class D. Adjustment dial for the short-time protection pickup I E. Value of instantaneous protection pickup I

F. Test port G. Phase unbalance H. Ready LED (green) I. Alarm LED

The sensor size

corresponds to the maximum value of the adjustment range.

Set the long-time protection in relation to the starting characteristics of the application.

Figure 54 – Long-Time Protection

Set the long-time protection using the two dials in relation to the starting characteristics of the application.

• Set the long-time protection pickup I

with the 9-setting dial.

148

137

155

114

FLA (A)

163

172

181

210

217

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

ENGLISH

Table 53 – Long-Time Protection Pickup I

for All Dial Setting

Full Load Amps

30 50 100 150 250 400 600

Full Load Amp Dial Settings

14 14 30 58 114 190 312 16 17 35 71 137 210 338 18 21 41 79 145 230 364 20 24 45 86 155 250 390 21 27 51 91 163 270 416 22 29 56 97 172 290 442 23 32 63 110 181 310 468 24 36 71 119 210 330 494 25 42 80 130 217 348 524

Set the long-time protection time delay class with the 3-setting dial. The choices of class are 5, 10, and 20.

Table 54 – Trip Time Delay

Current in the Load

1.5 I

6 I

7.2 I

Trip Time Delay tr (in seconds)

Class 5 Class 10 Class 20

120 240 400

6.5 13.5 26 5 10 20

The precision range is - 20%, + 0%.

Setting the Short-Time Protection

Set the pickup for short-time protection with its 9-setting dial. Pickup is in multiples of I

1. Set the long-time protection first: the setting pickup is Ir (A).

2. Turn the I in steps of Ir (nine settings).

13 I

adjustment dial to the value required. The adjustment range is 5–

3. Set Isd to Ir (A) x Isd setting.

The precision range is +/- 15%.

The short-time protection time delay is 30 ms and cannot be adjusted.

Setting the Instantaneous Protection

Table 55 – Instantaneous Protection Pickup Ii Values

Full Load Amps

30 50 100 150 250 400 600

450 750 1500 2250 3750 4800 7200

Pickup I

(A)

The precision range is +/- 15%.

Phase-Unbalance Protection MicroLogic 2 M trip units incorporate a protection against phase unbalance. The

characteristics are:

• Protection not adjustable

• Pickup: 30% phase unbalance (the precision range is +/- 20%)

• Overshoot time: 4 s in steady state, 0.7 s during startup

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Section 3—Description of Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Example:

A phase unbalance exceeding 30% for longer than 4 s in steady state causes the protection to trip.

Contactor Opening Command

Trip units with an SDTAM Module can use output 2 (SD4/OUT2) from this module to activate the contactor opening command for the motor-feeder before the circuit breaker trips (see “SDTAM Module (MicroLogic 2 M and 6 E-M)” on page 43).

Example of Application The following is an example of protection of a motor-feeder with the following

characteristics:

• Power supplied by a 1,250 kVA transformer, 400 V, 4%

• Protection of a motor application defined by:

— Two-component motor-feeder (circuit breaker, contactor) — Direct-on-line starting — Motor power 110 kW (I

= 196 A)

— Type 2 coordination — The application constraints dictate a slow startup

Figure 55 – Installation Diagram

1250 kVA, 400 V, 4%

110

250 A Circuit Breaker MicroLogic 2.2 M Trip Unit

ENGLISH

Calculations performed on the installation in accordance with the regulations have determined the characteristics of the appropriate circuit breakers to install (calculations performed using the Ecodial software).

Table 56 – Circuit Breaker Selection

Installation Circuit Breaker Comments

In = 196 A

= 28.5 kA F

min = 14.8 kA — —

H-frame, 250 A, with MicroLogic 2.2 M 220

Motor circuit breaker, case size

Read the Icu performance from faceplate label

Table 57 – Trip Unit Protection

Installation Trip Unit Setting Comments

In = 196 A MicroLogic 2.2 M 220 set to 200 A MicroLogic trip unit setting Slow starting Set in class 20 Long-time protection trip class

min = 14.8 kA

Transient = 14 I

/ In > 12

(Isd > 2,400 A)

Isd protection setting compatible with:

• Transient startup currents

• Short-circuit protection

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 3—Description of Trip Units

MicroLogic 6 E-M Electronic Trip Unit

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MicroLogic 6 E-M electronic trip units are suitable for all types of motor-feeder application. They also incorporate functions for measurement, operational assistance, maintenance assistance, and communication as standard.

Use the MicroLogic 6 E-M electronic trip unit to create a type 1 or type 2 coordination motor-feeder.

For more detailed information on the operation of MicroLogic 6 E-M trip units, consult the MicroLogic 5 and 6 Electronic Trip Units—User Guide.

The adjustment dials and indications are on the front face.

Figure 56 – MicroLogic 6.3 E-M Trip Unit Face

JIH

A. In rating of the MicroLogic 6.3 E-M electronic trip unit B. Protection pickup Ir and Ig adjustment dials C. Locking/unlocking microswitch D. Display unit E. Instantaneous protection pickup value: I F. Keypad G. Test port H. Phase unbalance I. Ready LED (green) J. Alarm LED

In=320A

B C

D E

F G

Overcurrent Protection Set the overcurrent protection settings on the MicroLogic 6 E-M trip unit in the

same way as for the MicroLogic 6, except the I

t setting for the short-time protections and ground-fault protection, which is always OFF (see “MicroLogic 5 (LSI) and 6 (LSIG) Electronic Trip Units” on page 69).

Additional Protection The MicroLogic 6 E-M trip unit incorporates additional protection functions for LSIG

protection:

• Phase-unbalance or phase-loss protection

• Locked rotor protection

• Undercurrent protection

• Long-start protection

• Monitoring motor insulation during operation protection

• Adjust these protections on the screen or by using the RSU software (see the

MicroLogic 5 and 6 Trip Units - User Guide)

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Section 4—Testing MicroLogic Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

CAUTION

Section 4— Testing MicroLogic Trip Units

This chapter describes the test interface for MicroLogic trip units.

Trip Unit Checks

A 24 Vdc power supply is necessary for carrying out local checks on a trip unit. Checks can also be done using the test interface.

Table 58 – Testing MicroLogic Trip Units

Test Interface Availability

24 Vdc external power supply Pocket Tester for MicroLogic Stand-alone UTA Tester UTA Tester connected to a computer with RSU software UTA Tester connected to a computer with LTU software

■ = Possible for all MicroLogic trip units □ = Possible for MicroLogic 5 and 6 trip units

Table 59 – Functions of the Test Interfaces

□

■

ENGLISH

Test Interface Setting Checking Testing

24 Vdc external power supply Pocket Tester for MicroLogic Stand-alone UTA Tester UTA Tester connected to a computer with RSU

software UTA Tester connected to a computer with LTU

software

□ □ — —

■ □ — —

■ □ X —

■ ■ X ■

■ ■ ■ ■

Saving Settings

■ = Possible for all MicroLogic trip units □ = Possible for MicroLogic 5 and 6 trip units

X = Only on tripping using the UTA push-to-trip button

Precautions before Checking, Tests, or Setting

Before Checking Checking the settings does not require any particular precautions. However, all

checks must be done by a qualified person.

Before Testing

HAZARD OF NUISANCE TRIPPING

Protection tests must be done only by trained electrical personnel.

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

When testing circuit breaker trip mechanisms, the necessary precautions must be taken:

• To not disrupt operations

• To not trip inappropriate alarms or actions

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 4—Testing MicroLogic Trip Units

CAUTION

Before Setting

ENGLISH

HAZARD OF NUISANCE TRIPPING OR FAILURE TO TRIP

Adjusting protection settings must be done only by trained electrical personnel.

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

Modifying settings requires a thorough knowledge of the installation and safety rules.

Pocket Tester

Use the Pocket Tester for the local inspection and testing of MicroLogic trip units.

The Pocket Tester contains two batteries which connect to the test port on MicroLogic electronic trip units.

Figure 57 – Pocket Tester

Pocket Flashlight Function

Preparing the Equipment

A. Green LED for checking battery status B. Yellow LED for checking thermal memory inhibition C. 3-position slide switch: Left = Test position; Center = OFF; Right = pocket flashlight D. Inhibit thermal memory button E. Two illumination LEDs F. Two 1.5 V AA batteries (not supplied) G. Connector for connecting to the test port on the MicroLogic trip unit H. Stylus/screwdriver (supplied)

To use the module as a pocket flashlight, move the slide switch to the pocket flashlight position (C, above).

To prepare the equipment before carrying out maintenance:

1. Slide open the protective cover to access the trip unit connector.

2. Click the Pocket Tester connector into the test port on the MicroLogic trip unit.

3. Move the slide switch to the Test position (C, above).

4. Check the battery status: the green LED must be on.

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Section 4—Testing MicroLogic Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Inspection and Checking

To check trip unit after preparing the equipment, check that the green Ready LED on the trip unit is blinking. This means that all the functions of the MicroLogic trip unit are in a satisfactory operational state (internal self test).

To check the setting values on the display unit (for MicroLogic 5 and 6 trip units):

1. Use the navigation buttons to display the Reading protection parameters mode (see “MicroLogic 5 (LSI) and 6 (LSIG) Electronic Trip Units” on page 69).

2. Scroll down and check the values of the different settings. For example, for the MicroLogic 5 trip unit:

(A)

— I

— IN (A) (if present) long time

(s)

— t

— Isd (A) — IN (A) (if present) short time

(ms) with/without I2t

— t

(A)

— I

NOTE: Settings can be modified.

The screen backlighting is not activated to optimize battery life (four hours).

ENGLISH

Inhibit Thermal Memory Function (Maintenance Level IV)

The “Inhibit thermal memory” button temporarily cancels the thermal memory. This inhibition is necessary to obtain a true measurement of the long-time protection time delay tr during tripping tests by primary current injection. This operation forms part of maintenance level IV, and requires a specialist maintenance service (see “Maintaining the Circuit Breaker During Operation” on page 96).

To carry out the test after preparing the equipment:

1. Switch the circuit breaker to the I (ON) position.

2. Move the slide switch to the OFF position (center).

3. Inhibiting the thermal memory

a. Use the stylus to press the button for inhibiting the thermal memory. b. The yellow confirmation LED and the green LED light up. The thermal

memory on the trip unit is inhibited for 15 minutes.

4. Canceling thermal memory inhibition (before 15 minutes)

a. Press the button for inhibiting the thermal memory again. b. The yellow confirmation LED and the green LED go out. The thermal

memory on the trip unit is reactivated.

NOTE: Thermal memory inhibition is canceled (the yellow confirmation LED goes out) if, in the course of running the test:

• The slide switch is moved to another position

• The Pocket Tester is disconnected from the test port

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 4—Testing MicroLogic Trip Units

Stand-Alone UTA Tester

ENGLISH

Use the stand-alone UTA Tester for:

• Trip unit checks and inspections

• Tripping tests

• The inhibition functions required for tripping tests by primary current injection (maintenance level IV)

A UTA Tester Kit is available (see the PowerPact™ H-, J-, and L-Frame Circuit Breakers catalog).

The UTA Tester Kit contains the parts shown in Figure 58.

Figure 58 – UTA Tester Kit

Description of UTA Tester

1. UTA Tester

2. Standard USB cord for connection to the computer

3. Special cord for connecting the UTA Tester to the test port on the trip unit

4. Standard RJ45 cord for connecting the UTA Tester to a ULP module

5. UTA Tester power supply unit

6. Instruction Sheet

7. Optional: A Bluetooth

wireless connection (to computer)

Figure 59 – UTA Tester

MicroLogic

1. Mechanical cap in central position

2. Green ON LED

3. Test buttons (3) with LEDs (3)

4. Connection socket for special cord connecting UTA Tester to test port on trip unit

5. Connection socket for power supply unit

6. Special cord for connecting the UTA Tester to the test port on the trip unit

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Section 4—Testing MicroLogic Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Preparing the Equipment

To prepare the equipment before carrying out maintenance:

1. Position the UTA Tester sliding mechanical cap in the central position.

2. Connect the 24 Vdc power cord: the green ON LED lights up.

3. Click the UTA Tester connector into the test port on the MicroLogic trip unit.

Inspection and Checking

To check and inspect the trip unit after preparing the equipment:

1. Inspect the equipment:

Check that the green Ready LED on the MicroLogic trip unit is blinking. This means that all the MicroLogic trip unit functions are in a satisfactory operational state (internal self test).

2. Check the setting values on the display unit (for MicroLogic 5 and 6).

a. Use the navigation buttons to display the Reading protection parameters

mode (see the MicroLogic 5 and 6 Trip Units - User Guide).

b. Scroll down and check the values of the different settings. For example, for

the MicroLogic 5 trip unit:

(A)

• I

(A) (if present) long time

• I

• tr (s) (A)

• I

(A) (if present) short time

• I

• tsd (ms) with/without I2t

• Ii (A)

ENGLISH

The Three Test Functions

NOTE: The settings can be modified.

Use the three test buttons for testing. The associated LEDs provide confirmation.

Figure 60 – Test Functions

A. Electrical push-to-trip test button with

pictogram and red confirmation LED

B. Inhibit thermal memory button with

pictogram and yellow confirmation LED

C. Inhibit ground-fault protection button with

pictogram and yellow confirmation LED

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 4—Testing MicroLogic Trip Units

Tripping Test Using the Electrical Push-to-Trip Button

ENGLISH

The electrical push-to-trip button causes an electronic trip in the circuit breaker. This test checks the electronic and mechanical circuit breaker controls.

To carry out the test after preparing the equipment:

1. Switch the circuit breaker to the I (ON) position.

2. Trip the circuit breaker by pressing the electrical push-to-trip button.

— The red confirmation LED on the UTA Tester lights up and goes off

immediately. — The circuit breaker trips. — On circuit breakers with standard or rotary handles, the control mechanism

moves to the tripped position — On circuit breakers with motor operators, the control mechanism moves to

the OFF position — The green Ready LED on the MicroLogic trip unit continues blinking — The screen on the MicroLogic 5 and 6 stays unchanged

3. Reset the circuit breaker

4. Reset the control mechanism.

The circuit breaker is ready.

Inhibit Thermal Memory Function (Maintenance Level IV)

The Inhibit thermal memory button temporarily cancels the thermal memory. This inhibition is necessary to obtain a true measurement of the long-time protection time delay t

during tripping tests by primary current injection. This operation, which

is maintenance level IV, requires a specialist maintenance service (see “Maintaining the Circuit Breaker During Operation” on page 96).

To carry out the test after preparing the equipment:

1. Switch the circuit breaker to the I (ON) position.

2. Inhibit the thermal memory:

a. Press the button for inhibiting the thermal memory. b. The yellow confirmation LED shows a steady light.

The thermal memory on the trip unit is inhibited for 15 minutes.

3. Canceling thermal memory inhibition (before 15 minutes)

a. Press the button for inhibiting the thermal memory again. b. The yellow confirmation LED goes out.

The thermal memory on the trip unit is reactivated.

Inhibiting the thermal memory also restrains the ZSI function (if this option is present on the trip unit). This prevents the time delay for short-time protection t and time delay for ground-fault protection t

(MicroLogic 6) from being taken out of

commission during the tests.

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Section 4—Testing MicroLogic Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Inhibit Ground-Fault Protection Function (Maintenance Level IV)

The Inhibit ground-fault protection button temporarily cancels this protection (MicroLogic 6) and the thermal memory: it is then possible to inject the test current on each phase separately and calculate the true time delay tr.

To carry out the test after preparing the equipment:

1. Switch the circuit breaker to the I (ON) position.

2. Inhibit ground-fault protection:

a. Press the button for inhibiting the ground-fault protection. b. The yellow confirmation LEDs for ground-fault protection and thermal

memory inhibition show a steady light.

c. Ground-fault protection and the thermal memory on the trip unit are

inhibited for 15 minutes.

3. Canceling ground-fault protection inhibition (before 15 minutes): a. Press the button for inhibiting the ground-fault protection again. b. The yellow confirmation LEDs for ground-fault protection and thermal

memory inhibition go out. Ground-fault protection and the thermal memory on the trip unit are reactivated.

ENGLISH

Inhibiting the ground-fault protection also restrains the ZSI function (if this option is present on the trip unit). This prevents the time delay for short-time protection t from being taken out of commission during the tests.

UTA Tester Connected to a Computer

Description and Connection

Use the UTA Tester connected to a computer to carry out the complete range of checks, tests, and adjustments on the MicroLogic trip unit.

There are two possible ways to connect the computer to the UTA Tester:

• Using the USB port

• Using the Bluetooth option

Table 60 – Connection Using the USB Port

A. USB standard connection cord from

the UTA Tester to the computer B. UTA Tester power supply unit C. MicroLogic cord for connecting the

UTA Tester to the test port on the trip

unit

NOTE: If the USB port does not supply enough power to energize the MicroLogic trip unit and the UTA Tester, the three test LEDs on the UTA Tester start to blink. In such cases, provide energy to the UTA Tester from the power supply module supplied with the UTA Tester Kit.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 4—Testing MicroLogic Trip Units

WARNING

Table 61 – Connection Using Bluetooth

ENGLISH

A. RJ45 cord for Bluetooth transmitter-

receiver, on computer

B. PS/2/RJ45 cord for Bluetooth

transmitter-receiver, on the UTA Tester

C. MicroLogic cord for connecting the UTA

Tester to the test port on the trip unit

D. UTA Tester power supply unit

NOTE: Use the power supply unit supplied with the kit. NOTE: Connect the Bluetooth option firmly to the UTA Tester with the PS/2

connector (do not use the RJ45 connection used in the ULP connection method by forcing the mechanical cap).

Hardware and Software

The following hardware and software are required for operational use:

• Hardware The UTA Tester provides all the necessary connections (the Bluetooth wireless method is optional and has to be ordered separately). The test computer is standard with a minimum Windows XP configuration and a USB1 port

• Software Two software options are offered:

— RSU protection and alarm parameter-setting software. Download this free

software from www.schneider-electric.com.

— LTU settings test software (such as fault simulation, pickup, and time delay

measurement)

NOTE: Access for modifying the MicroLogic trip unit settings using communication is user password-protected. The factory-set administrator password is ‘0000’. To check whether to use a password, contact the authorized administrators.

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.

UTA Tester Connected to a Computer with RSU Software

The RSU (Remote Setting Utility) software is a MicroLogic utility designed to help the operator:

• check or configure:

— Protection parameters — Measurement parameters — Alarm parameters — Assignment of the SDx Module outputs

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Section 4—Testing MicroLogic Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

3P 60 UL

LV437037

— BSCM module parameters — Communication interface module parameters

• modify passwords

• save these configurations

• edit configurations

• display trip curves

Figure 61 – RSU Software Screen

A. MicroLogic Selection Window B. Accessible Function Tabs

ENGLISH

Access the description of the RSU software configuration functions using different tabs.

Table 62 – The RSU Software Functions

Tab Functions

Configure the metering functions (MicroLogic E)

Set the protection functions

Configure pre-alarms and the ten user-defined alarms

Assign the two SDx outputs

Configure four password levels

BSCM Module Option

• Counters for OF operations and actions on SD and SDE faults

• Alarm threshold associated with the OF counter

• Communicating motor operator: Close command counter

• Communicating motor operator: Configure the motor reset command

• Communicating motor operator: Alarm threshold associated with the close

command counter

Modbus Interface Option

• Read Modbus addresses

• Communication functions setup

For more details about the Services, Alarms and Outputs tabs, see the MicroLogic 5 and 6 Trip Units - User Guide.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 4—Testing MicroLogic Trip Units

Preparing the Equipment

ENGLISH

To prepare the equipment before carrying out maintenance:

1. Position the UTA Tester mechanical cap in the central position.

2. Start up the PC.

3. Set up the connections between the computer and the UTA Tester or connect the Bluetooth connectors.

4. Click the UTA Tester connector into the test port on the MicroLogic trip unit.

Inspection and Checking

To check and inspect the trip unit after preparing the equipment:

Inspection

1. Check that the green Ready LED is blinking. This means that all the MicroLogic functions are in a satisfactory operational state (internal self test).

Checking the Settings

2. Run the RSU software:

• An active screen of the front of the MicroLogic variant tested appears under the Basic Protection tab

NOTE: The settings can be modified only if the padlock is unlocked.

Tests Using the UTA Tester

When connected to a computer the UTA Tester can operate in stand-alone mode in which the three test functions are accessible (see “Stand-Alone UTA Tester” on page 82).

Saving and Printing

The different settings and data can be saved and printed.

• Access to settings and navigation between screens are identical to those used for MicroLogic trip units (see the MicroLogic 5 and 6 Trip Units - User Guide).

a. Scroll down and check the values of the different settings. For

example, for the MicroLogic 5 trip unit:

• I

(A)

• IN (A) (if present) long time

• tr (s)

(A)

• I

• IN (A) (if present) short time

(ms) with/without I2t

• t

• Ii (A)

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Section 4—Testing MicroLogic Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

A B

UTA Tester Connected to a Computer with LTU Software

The LTU (Local Test Utility) software is a MicroLogic

program to help the operator:

• Test the protection time delays

• Simulate alarms

• Save test results

• Print test reports

• Display trip curves

• Display currents

• Test the hold time (check selectivity)

• Test the ZSI (Zone Selective Interlocking) function

Use trip simulations to check the protection time delay values (see LTU Online Help).

Two types of tests are offered:

• Under the Automatic Test tab, the LTU software automatically performs trip

tests in sequence.

The test result shows as a value and by a color-coded bar which is:

ENGLISH

— Green (trip time within tolerance): Passed — Red (trip time outside tolerance): Failed

• Under the Manual Test tab, the LTU software prompts the user to choose

values for the intensity and duration of the fault current. Use this test to check the hold thresholds and times on the trip unit.

See Figure 62 for a description of the LTU screen under the Identification tab.

Figure 62 – LTU Software Screen

A. Accessible test tabs B. Installation, customer, and product identification tab C. Setting values area for the MicroLogic trip unit being tested

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 4—Testing MicroLogic Trip Units

Table 63 – Test Functions Accessible on the PC

ENGLISH

Tab Function

Identification Identification of the installation and the circuit breaker/trip unit Manual Test Manual setting of fault current values Automatic Test Automatic setting of fault current values Alarm simulation Alarm simulation for system testing Miscellaneous Push-to-trip button test

Preparing the Equipment

To prepare the equipment before carrying out maintenance:

1. Position the UTA Tester mechanical cap in the central position.

2. Start up the PC.

3. Set up the connections between the computer and the UTA Tester or connect the Bluetooth connectors.

4. Click the UTA Tester connector into the test port on the MicroLogic trip unit.

Inspection and Checking

To check and inspect the trip unit after preparing the equipment:

1. Check that the green Ready LED is blinking. This indicates that all the MicroLogic functions are in a satisfactory operational state (internal self test).

2. Run the LTU software to check the settings. Check under the Trip unit on test tab for a description of the MicroLogic variant tested.

Figure 63 – Settings Values

Tests Using the UTA Tester

When connected to a computer the UTA Tester can operate in stand-alone mode: the three test functions are accessible (see “Stand-Alone UTA Tester” on page 82).

The setting values appear in the area at the foot of the screen.

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Section 4—Testing MicroLogic Trip Units PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

Automatic Test Using the LTU Software

Automatic Test Tab

1. Run the LTU software.

Check under the Trip unit on test tab for a description of the MicroLogic variant tested. The setting values appear in the area at the foot of the screen.

2. Select the Automatic Test tab.

3. Click Run automatic tests.

The LTU software performs fault current simulation on all the protection types in succession: long-time, short-time, instantaneous, and ground-fault protection, as applicable.

4. The results are displayed in the table of values (see Figure 64).

Figure 64 – Table of Values

ENGLISH

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 4—Testing MicroLogic Trip Units

Manual Test Using the LTU Software

ENGLISH

Manual Test Tab

1. Run the LTU software. Find a description of the MicroLogic variant tested under the Trip unit on test tab. The setting values appear at the foot of the screen.

2. Select the Manual Test tab.

3. Indicate the three fault current values (in A) in the Three Phase injection areas. Indicate the duration (in ms) of the fault current in the Injection duration area.

4. Click on Run manual test. The simulation shows the type of trip (for example, long time) or NON trip.

5. The results are displayed in the table of values (see Figure 65).

Figure 65 – Table of Values

Saving and Printing

Settings and data can be saved and printed. The software also provides an option to examine a trace of the trip curve calculated by the trip unit.

Figure 66 – Setting and Data

A B

A. Printing data B. Trip curves

The software automatically saves the data.

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Section 5—Operating the Circuit Breaker PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

NOTICE

Section 5— Operating the Circuit Breaker

This chapter sets out recommendations for startup, operating conditions, and maintenance of H-, J-, and L-frame circuit breakers. Observing these recommendations ensures a useful service life for the equipment and the installation.

Startup

List of Checks and Inspections

When starting up new equipment, or following lengthy downtime, a general check takes just a few minutes. Such a check reduces the risk of a malfunction due to error or oversight.

NOTE: Disconnect all power to the switchboard before carrying out any checks and tests.

Table 64 – Checks and Inspections

ENGLISH

Insulation

and Dielectric

Strength

Tests

Before startup X X X X X X Periodically during operation After carrying out work on the

switchboard Periodically during lengthy downtime X X X Following lengthy downtime X X X X Following lengthy downtime and

modification to the switchboard

See “Regular Preventive Maintenance” on page 96.

X X X X X X

Inspect

Switchboard

X X X X X

Check

Compliance

with the

Diagram

Inspect

Mechanical

Equipment

X X X

Check

Mechanical

Operation

Check

Electronic

Trip Units and

Vigi Modules

A: Insulation and Dielectric Strength Tests

HAZARD OF EQUIPMENT DAMAGE

Insulation and dielectric strength tests must be done only by trained electrical personnel.

Failure to follow these instructions can result in equipment damage.

Insulation and dielectric strength tests are carried out before the switchboard is delivered. These tests are subject to the currently applicable standards.

Dielectric strength tests impose great stress on the equipment and can cause damage if performed incorrectly. In particular:

• Reduce the value used for the test voltage according to the number of consecutive tests on the same piece of equipment

• Disconnect electronic equipment if necessary

NOTE: MicroLogic trip units can be left connected, even if equipped with voltage measurement (ENVT option).

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 5—Operating the Circuit Breaker

CAUTION

DANGER

A: Insulation and Dielectric Strength Tests on Vigi

ENGLISH

Modules

HAZARD OF PERSONAL INJURY OR EQUIPMENT DAMAGE

Disconnect the protective cover on the front of the Vigi module before performing insulation and dielectric strength tests.

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

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

The protective cover for the connections must be reconnected without fail following dielectric tests.

Failure to follow these instructions will result in death or serious injury.

Table 65 – Testing Vigi Module

1. Disconnect Vigi modules before performing dielectric tests.

2. Replace the protective cover for the connections upon completing dielectric tests.

B: Inspect Switchboard Check that the circuit breakers are installed:

• In a clean environment without waste from assembling the equipment (such as wiring, tools, shavings, metallic particles)

• In a properly ventilated switchboard (unobstructed ventilation grilles)

C: Compliance with the Diagram

Check that the circuit breakers comply with the installation diagram (see “Identification” on page 8):

• Identification of the feeds on the front of the circuit breakers

• Rating and breaking capacity (indications on the faceplate label)

• Identification of the trip units (type, rating)

• Presence of additional functions (Vigi earth-leakage protection module, motor operator, rotary handle, control, or indication auxiliaries, locking, sealing)

NOTE: Removing the protective cover on the front of the module automatically disconnects the Vigi module.

NOTE: If the cover is not replaced:

• There is a risk of direct contact

with connections

• There is a risk of an insulation

fault downstream

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Section 5—Operating the Circuit Breaker PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

• Protection settings (overload, short-circuit, earth-leakage):

— Thermal-magnetic and MicroLogic 2 electronic trip unit: visually check the

position of the switches

— MicroLogic 5 and 6 electronic trip units: visually check the main settings

and use the test interface to check in detail

NOTE: H-, J-, and L-frame circuit breakers with a Vigi module require an intermediate terminal shield for the earth-leakage protection to function correctly.

ENGLISH

D: Inspection of Mechanical Equipment

E: Mechanical Operation Check the circuit breaker mechanical operation (see “Circuit Breaker Overview” on

F: Operation of Electronic Trip Units and Vigi Modules

Check the mounting and mechanical strength:

• Of circuit breakers in the switchboard and of power connections

• Of auxiliaries and accessories on the circuit breakers:

— Rotary handles or motor operators — Installation accessories (such as terminal shields and escutcheons) — Auxiliary circuit connections

page 7):

• Opening

• Closing

• Tripping with the push-to-trip button

• Resetting

Check that the following are working correctly:

• MicroLogic electronic trip units, with the aid of the special testing tools:

— Pocket Tester — UTA Tester

• Vigi modules, by operating the test button T on the front (this test checks the whole measurement system and tripping on earth-leakage faults)

• Communication through the bus (see ULP System - User Guide)

Operating Conditions

For operating conditions see catalog 0611CT1001: PowerPact H-, J-, and L-Frame Circuit Breakers

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 5—Operating the Circuit Breaker

Maintaining the Circuit Breaker During Operation

ENGLISH

The electrical switchboard and all its equipment continue to age whether they operate or not. This aging process is due mainly to environmental influences and operating conditions.

To ensure that circuit breaker retains the operating and safety characteristics specified in the catalog for the whole of its service life:

• Install the device in optimum environmental and operating conditions (described in Table 66).

• Have routine inspections and regular maintenance done by qualified personnel.

Environmental and Operating Conditions

The environmental conditions described in bulletin 0611CT1001 H, J, and L-frame Circuit Breaker Catalog refer to harsh operating environments.

Table 66 – Optimum Environmental and Operating Conditions

Environmental and Operating Factor

Temperature Average annual temperature outside the switchboard: < 25°C. Loading Loading remains < 80% of I Harmonics The harmonic current per phase is < 30% of I Humidity The relative humidity is < 70%. Corrosive atmosphere (SO2,

NH3, H2S, Cl2, NO2) Saline environment Install the circuit breaker in an environment free of saline mist.

Dust

Vibration Continuous vibration is < 0.2 g.

The maintenance programs apply to optimum environmental and operating conditions. Outside these limits circuit breakers are subject to accelerated aging which can quickly lead to malfunctions.

Regular Preventive Maintenance

Maintenance (servicing and inspection) recommendations for each product are intended to maintain the equipment or subassemblies in a satisfactory operational state for their useful service life.

There are three recommended maintenance levels (see Table 67).

Table 67 – Maintenance Operations

Comments

24 hours a day.

Install the circuit breaker in environmental category 3C1 or 3C2 (IEC 60721-3-3).

The dust level is low: protect the circuit breaker within a switchboard fitted with filters or IP54 ventilated

Level

Level II 1 year

Level III 2 years

Level IV 5 years

NOTE: The intervals stated are for normal environmental and operating conditions.

Maintenance Interval

Maintenance Operations

Visual inspection and functional testing, replacement of faulty accessories

As for level II plus servicing operation and subassembly tests

As for level III plus diagnostics and repairs (by Schneider Electric Services)

Provided B the environmental conditions are more favorable, maintenance intervals can be longer (for example, Level III maintenance can be carried out every three years).

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Section 5—Operating the Circuit Breaker PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide

If just one of the conditions is more severe, perform maintenance more frequently (for advice, contact Schneider Electric Services). Functions linked specifically to safety require particular maintenance intervals.

NOTE: Test that the remote safety stop commands and the earth-leakage protection (Vigi module) work at regular intervals (every six months).

Inspection and Servicing Operations Required

Inspection and servicing chiefly consist of checks and inspections D, E, and F as defined for the Servicing commissioning phase (see “Startup” on page 93).

Table 68 – Inspections

Inspection Definition Level II Level III Level IV

Visually inspect general state of circuit breaker: escutcheon, trip unit, case, chassis, connections. Check the mounting and the mechanical strength:

• Of circuit breakers in the switchboard and of

power connections

• Of auxiliaries and accessories on the circuit

breakers: – Rotary handles or motor operators – Installation accessories (such as terminal shields and escutcheons) – Auxiliary circuit connections

• Of the chassis (drawout circuit breaker)

• Of locks, padlocks, and padlock support tabs

Check the circuit breaker mechanical operation:

• Opening, closing, and resetting

• Tripping with the push-to-trip button

• Tripping by MN/MX control auxiliaries

• Opening, closing, resetting by motor

operator

Check operation of the electronic subassemblies:

• MicroLogic electronic trip units with the aid of

special testing tools: – Pocket Tester – UTA Tester – RSU and LTU software

• Vigi modules, using the test button T on the

front

• communication (see the ULP System—User

Guide)

Yes As for level II

As for level II plus check of the closing times,

Yes

opening times, and voltage characteristics (releases)

As for level II plus check of the trip curves (LTU software)

As for level III plus measurement of insulation resistance

As for level III

As for level III plus check of the trip characteristics by primary injection

ENGLISH

For a detailed definition of these operations, contact Schneider Electric Services.

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PowerPact™ H-, J-, and L-Frame Circuit Breakers—User Guide Section 5—Operating the Circuit Breaker

Maintenance Following Short-Circuit Trip

ENGLISH

Test a circuit breaker in severe conditions, in accordance with UL standards, to check that it can break a short-circuit current at maximum permissible value three times.

After a short-circuit fault, it is necessary to:

• Carefully clean off any traces of black smoke (the particles can be conducting)

• Check the power connections and fine wires

• Operate the circuit breaker several times at no load (at least five times)

Cleaning the Circuit Breakers

To avoid dust deposits that can affect the circuit breaker mechanical operation, clean the circuit breakers (if necessary) when performing maintenance.

Table 69 – Cleaning the Circuit Breaker

Nonmetallic Parts

Metal Parts

In the Event of a Trip

Identify the Cause of the Trip

Local and remote indication provides information on the probable cause of a trip. In particular, the MicroLogic 5 or 6 trip unit provides specific information about the cause of the fault (see the MicroLogic 5 and 6 Electronic Trip Units - User Guide).

The causes are of several types:

• Faults on the installation

• Faults due to a malfunction

• Intentional tripping

Always use a dry cloth. Do not use cleaning products.

Preferably use a dry cloth. If a cleaning product must be used, avoid applying or splashing the product onto nonmetallic parts.