Schneider Electric 3.0A, 2.0A, 5.0A, 6.0A User Manual

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units

Unidades de disparo electrónico Micrologic™ 2.0A, 3.0A,

5.0A y 6.0A

MC

Déclencheurs électroniques Micrologic

2.0A, 3.0A, 5.0A et

6.0A

Instruction Bulletin Boletín de instrucciones Directives d'utilisation

48049-136-05 Rev. 01, 04/2012

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

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units

Instruction Bulletin

48049-136-05 Rev. 01, 07/2012

Retain for future use.

ENGLISH

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units 48049-136-05

DANGER

WARNING

E

IEC

ANSI

Rev. 01, 07/2012

Hazard Categories and Special

ENGLISH

Symbols

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

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

CAUTION

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

NOTIC

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

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

Please Note 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.

FCC Notice This equipment has been tested and found to comply with the limits for a

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

48049-136-05 Micrologic® 2.0A, 3.0A, 5.0A and 6.0A Electronic Trip Units Rev. 01, 07/2012 Table of Contents

Table of Contents

SECTION 1: GENERAL INFORMATION ...................................................................................................................... 5

Introduction ................................................................................................. 5

Communications ......................................................................................... 5

Trip Unit Settings ........................................................................................ 5

Micrologic 2.0A Trip Unit ....................................................................... 6

Micrologic 3.0A Trip Unit ....................................................................... 6

Micrologic 5.0A Trip Unit ....................................................................... 7

Micrologic 6.0A Trip Unit ....................................................................... 8

Zone-Selective Interlocking ......................................................................... 9

Trip Unit Switches ..................................................................................... 10

Long-Time Protection .......................................................................... 10

Short-Time Protection ......................................................................... 11

Instantaneous Protection ..................................................................... 12

Ground-Fault Protection ...................................................................... 13

Indicator Lights .......................................................................................... 13

Overload Indicator Light ...................................................................... 13

Trip Indicator Lights ............................................................................. 14

Ammeter ................................................................................................... 14

Trip Unit Testing ........................................................................................ 14

Micrologic Trip Unit Configuration ............................................................. 14

Control Power ...................................................................................... 14

External Power Supply ........................................................................ 15

ENGLISH

SECTION 2: AMMETER .................................................................................................................... 16

Display ...................................................................................................... 16

Ammeter Measurements ........................................................................... 16

Accessing Information ............................................................................... 16

Current Menu ...................................................................................... 17

Peak Menu .......................................................................................... 18

Switch Settings Menu .......................................................................... 19

SECTION 3: OPERATION .................................................................................................................... 20

Switch Setting Adjustment ........................................................................ 20

Examples .................................................................................................. 20

Micrologic 2.0A Trip Unit ..................................................................... 20

Micrologic 3.0A Trip Unit ..................................................................... 21

Micrologic 5.0A Trip Unit ..................................................................... 21

Micrologic 6.0A Trip Unit ..................................................................... 22

Zone-Selective Interlocking (ZSI) .............................................................. 23

Communication Module values ................................................................. 24

Trip Unit Settings Check ........................................................................... 26

Trip Unit Operation Verification ................................................................. 26

Equipment Ground-Fault Trip Functions Testing ...................................... 27

Trip Unit Resetting .................................................................................... 27

Trip Unit Status Check .............................................................................. 27

SECTION 4: TRIP UNIT REPLACEMENT .................................................................................................................... 28

Required Tools .......................................................................................... 28

Preparation ............................................................................................... 28

Record Switch Settings ....................................................................... 28

Circuit Breaker Disconnection ............................................................. 28

Circuit Breaker Accessory Cover Removal ......................................... 28

Rating Plug Removal ........................................................................... 29

Trip Unit Removal ................................................................................ 29

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units 48049-136-05 Table of Contents Rev. 01, 07/2012

ENGLISH

SECTION 5: ADJUSTABLE RATING PLUG REPLACEMENT .............................................................................................. 33

SECTION 6: BATTERY REPLACEMENT ....................................................................................................................34

Trip Unit Replacement ..............................................................................29

Battery Installation ...............................................................................29

Trip Unit Installation .............................................................................30

Circuit Breaker Accessory Cover Replacement ........................................ 31

Trip Unit Installation Check .......................................................................32

Secondary Injection Testing ................................................................32

Primary Injection Testing ..................................................................... 32

Check Accessory Operation ................................................................ 32

Trip Unit Setup ..........................................................................................32

Circuit Breaker Reconnection ...................................................................32

Rating Plug Removal ................................................................................ 33

New Rating Plug Installation ..................................................................... 33

Circuit Breaker Disconnection ...................................................................34

Circuit Breaker Accessory Cover Removal ...............................................34

Withstand Module Shifting ........................................................................34

Battery Replacement .................................................................................34

Withstand Module Replacement ............................................................... 35

Circuit Breaker Accessory Cover Replacement ........................................ 35

Circuit Breaker Reconnection ...................................................................35

APPENDIX A: REGISTER LIST ....................................................................................................................36

List of Registers ........................................................................................36

48049-136-05 Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units

06134858

A

B

D

E

C

A—Micrologic Trip Unit B—Product Name C—Switch Cover D—Switch Cover Opening Slot E—Adjustable Rating Plug

Rev. 01, 07/2012 Section 1—General Information

Section 1—General Information

Introduction

Micrologic™ trip units (A) provide adjustable tripping functions on electronic trip circuit breakers. The product name (B) specifies the level of protection provided by the trip unit.

Micrologic 3.0A

Type of protection

2—Basic IEC protection (LS0) 3—Basic UL protection (LI) 5—Selective protection (LSI) 6—Selective protection plus ground fault

protection for equipment (LSIG)

Trip unit series

0—Indicates the first version

Type of measurement

None—Provides protection only

A—Provides protection plus ammeter measurements

Micrologic trip units are field replaceable to allow for upgrading of the trip unit in the field. For complete information on available circuit breaker models, frame sizes, interrupting ratings, sensor plugs, rating plugs and trip units, see the product catalog.

Figure 1: Micrologic Trip Unit

rolo

ic

M

06133249

%

0

1

%

0

4

u

n

e

m

ENGLISH

A

7.0

ic

g

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ar l a

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8

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r

12

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)

4

6

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1 8

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20

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24

6

8

.

9

.

5

.

r I

6

@

5

.

1

n

.4

I

x

Communications Micrologic trip units can communicate with other devices if the optional

Circuit Breaker Communication Module (BCM) is installed. For information on the communication module, see the product catalog and Modbus™ Communications System, Data Bulletin 0613IB1201.

Trip Unit Settings On the face of the trip unit are adjustable switches to allow changing of trip

characteristics. Trip units are shipped with the long-time pickup switch set at

1.0 and all other trip unit adjustments set at their lowest settings.

5-EN

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units 48049-136-05

0 Ir Isd I

t

06134245

06134246

Micrologic 2.0 A

menu

long time

alarm

instantaneous

.4

.5

.6

.7.8.9

.95 .98

1

Ir

x In

.5

1

2

4

8

12

16 20

tr

(s)

@

6 Ir

24

setting

Isd

2.5

5

6

1.5

2

3

4

8

10

x Ir

G

F

A

H

J

I

F

G

H

K

B

C

E

D

N

M

L

06133243

Micrologic 3.0 A

menu

long time

alarm

instantaneous

.4

.5

.6

.7.8.9

.95 .98

1

Ir

x In

.5

1

2

4

8

12

16 20

tr

(s)

@

6 Ir

24

3

6

8

setting

Ii

1.5

2

4

5

10

12

x In

0 Ir Ii I

t

06133201

G

F

A

H

J

I

F

G

H

K

B

C

E

D

N

M

L

Section 1—General Information Rev. 01, 07/2012

ENGLISH

Micrologic 2.0A Trip Unit

The Micrologic 2.0A trip unit provides basic IEC (LS0) protection and a built-in ammeter.

A. Trip unit name B. Alphanumeric display C. Three-phase bar graph D. Scroll button E. Menu button F. Long-time pickup (Ir) switch G. Long-time delay (tr) switch H. Short-time pickup (Isd) switch* I. Test plug receptacle J. Overload indicator light K. Reset button for battery status check and trip

L. Self-protection indicator light M. Short-time or instantaneous trip indicator

N. Long-time trip indicator light

NOTE: For use with IEC circuit breakers only. Figure 2: 2.0A Trip Unit

indicator LED

light

Micrologic 3.0A Trip Unit

The Micrologic 3.0A trip unit provides basic UL (LI) protection and a built-in ammeter.

A. Trip unit name B. Alphanumeric display C. Three-phase bar graph D. Scroll button E. Menu button F. Long-time pickup (Ir) switch G. Long-time delay (tr) switch H. Instantaneous pickup (Ii) switch I. Test plug receptacle J. Overload indicator light K. Reset button for battery status check and trip

L. Self-protection indicator light M. Short-time or instantaneous trip indicator

N. Long-time trip indicator light

*Short-time delay is factory set at 0 (no delay), thus short-time pickup provides instantaneous protection.

indicator LED

light

Figure 3: 3.0A Trip Unit

48049-136-05 Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units

Micrologic 5.0 A

menu

d

elay

sh

o

r

t

ti

me

lon

g

ti

me

a

l

a

rm

tr

(s)

se

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.5

.

6

.7

.8

.9

5

.

9

8

1

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1

2

4

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1

2

1

6

2

0

@

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r

2

4

06133244

e

4

I i

x In

3

6

8

10

12 15

off

2

tsd

(s)

on I2t

.2

.3

.4

.1

.2

.3

.1

0

off

x Ir

2

2.5

3

4

5

6 8

10

Isd

1.5

i

n

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u

s

G

F

A

H

L

K

F

G

J

M

B

C

E

D

P

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N

I

J

I

H

Rev. 01, 07/2012 Section 1—General Information

Micrologic 5.0A Trip Unit

The Micrologic 5.0A trip unit provides selective (LSI) protection and a built-in ammeter.

A. Trip unit name B. Alphanumeric display C. Three-phase bar graph D. Scroll button E. Menu button F. Long-time pickup (Ir) switch G. Long-time delay (tr) switch H. Short-time pickup (Isd) switch I. Short-time delay (tsd) switch J. Instantaneous pickup (Ii) switch K. Test plug receptacle L. Overload indicator light M. Reset button for battery status check and trip

indicator LED N. Self-protection indicator light O. Short-time or instantaneous trip indicator

light P. Long-time trip indicator light

Figure 4: 5.0A Trip Unit

t

06133202

0 Ir Isd I

Ii

ENGLISH

7-EN

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units 48049-136-05

Micrologic 6.0 A

menu

delay

short tim

e

long time

alarm

ground fault

setting

test

.4

.5

.6

.7.8.9

.95 .98

1

Ir

x In

.5

1

2

4

8

12

16 20

tr

(s)

@

6 Ir

24

tsd

tg

06133245

4

I i

x In

3

5

6

10

12 15

off

2

tsd

(s)

on I2t

.2

.3

.4

.1

.2

.3

.1

0

off

x Ir

2

2.5

3

4

5

6 8

10

Isd

1.5

on

I

2

t

.2

.3

.4

.1

.2

.3

.1

0

off

B

C

D

E

F

G H

J

Ig

A

(s)

instantaneous

40

100

%

0 Ir Isd I

t

Ii

06133202

0 I

t

I2t off

I2t on

Ig

06133247

G

F

A

H

O

M

F

G

J

P

B

C

E

D

T

S

Q

I

J

I

H

K

L

N

R

K

L

Section 1—General Information Rev. 01, 07/2012

ENGLISH

Micrologic 6.0A Trip Unit

The Micrologic 6.0A trip unit provides selective and ground-fault protection for equipment (d1200 A) (LSIG) and a built-in ammeter.

A. Trip unit name B. Alphanumeric display C. Three-phase bar graph D. Scroll button E. Menu button F. Long-time pickup (Ir) switch G. Long-time delay (tr) switch H. Short-time pickup (Isd) switch I. Short-time delay (tsd) switch J. Instantaneous pickup (Ii) switch K. Ground-fault pickup (Ig) switch L. Ground-fault delay (tg) switch M. Test plug receptacle N. Ground fault push-to-trip button O. Overload indicator light P. Reset button for battery status check and trip

Q. Self-protection indicator light R. Ground-fault trip indicator light S. Short-time or instantaneous trip indicator

T. Long-time trip indicator light

Figure 5: 6.0A Trip Unit

indicator LED

light

48049-136-05 Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units Rev. 01, 07/2012 Section 1—General Information

Zone-Selective Interlocking

Short-time and ground-fault protection can be interlocked to provide zone-selective interlocking.

Control wiring links several trip units in the distribution network and in the event of a fault, a trip unit will obey the set delay time only if receiving a signal from a downstream trip unit.

If the trip unit does not receive a signal, tripping will be instantaneous (with no intentional delay).

• The fault is cleared instantaneously by the

nearest upstream circuit breaker.

• Thermal stresses (I

2

t) in the network are minimized without any effect on the correct time delay coordination of the installation.

Figure 6 shows circuit breakers 1 and 2 zoneselective interlocked.

• A fault at A is seen by circuit breakers 1 and

2. Circuit breaker 2 trips instantaneously and also informs circuit breaker 1 to obey set delay times. Thus, circuit breaker 2 trips and clears the fault. Circuit breaker 1 does not trip.

• A fault at B is seen by circuit breaker 1.

Circuit breaker 1 trips instantaneously since it did not receive a signal from the downstream circuit breaker 2. Circuit breaker 1 trips and clears the fault. Circuit breaker 2 does not trip.

2

NOTE: Use I

t off with ZSI for proper coordination. Using I2t on with ZSI is not recommended as the delay in the upstream device receiving a restraint signal could result in the trip unit tripping in a time shorter than the published trip curve.

NOTE: Setting short-time delay (tsd) or ground-fault delay (tg) to the 0 setting will eliminate selectivity for that circuit breaker.

Figure 6: Zone-Selective Interlocking

06133376

1

B

2

A

ENGLISH

9-EN

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units 48049-136-05

x Ir

2

2.5

3

4

5

6 8

10

1.

5

setting

Isd

instantaneous

long time

alarm

tr

(s)

.4

.5

.6

.7.8.9

.95 .98

1

Ir

x In

.5

1

2

4

8

12

16 20

@ 6 Ir

24

06134243

x In

2

3

4

5

6

8

10

12

1.

5

setting

Ii

instantaneous

long time

alarm

tr

(s)

.4

.5

.6

.7.8.9

.95 .98

1

Ir

x In

.5

1

2

4

8

12

16 20

@ 6 Ir

24

06133203

.4

.5

.6

.7.8.9

.95 .98

1

delay

short tim

e

I itsd

(s)

on I2t

.2

.3

.4

.1

.2

.3

.1

0

off

instantaneous

long time

alarm

Ir

x In

.5

1

2

4

8

12

16 20

tr

(s)

@

6 Ir

24

setting

x Ir

2

2.5

3

4

5

6 8

10

Isd

1.

5

x In

3

4

6

8

10

12 15

off

2

06133204

.4

.5

.6

.7.8.9

.95 .98

1

delay

short tim

e

I itsd

(s)

on I2t

.

2

.

3

.

4

.

4

.

1

.

2

.

3

.

1

0

off

instantaneous

long time

alarm

Ir

x In

ground fault

B

C

D

E

F

G H

J

Ig tg

(s)

on I2t

.

2

.

3

.

4

.

4

.

1

.

2

.

3

.

1

0

off

A

.5

1

2

4

8

12

16

20

tr

(s)

@

6 Ir

24

setting

x Ir

2

2.5

3

4

5

6 8

10

Isd

1.

5

x In

3

4

5

8

10

12 15

off

2

test

06133351

Section 1—General Information Rev. 01, 07/2012

Trip Unit Switches

ENGLISH

Long-Time Protection

Long-time protection protects equipment against overloads.

• Long-time protection is standard on all trip

units.

• The long-time pickup (Ir) (A) sets the

maximum current level (based on sensor plug rating In) which the circuit breaker can continuously carry. If current exceeds this value, circuit breaker will trip after the preset time delay. The long-time pickup (Ir) is adjustable from 0.4–1.0 times the sensor plug rating (In).

• The long-time delay (tr) (B) sets the length of

the time that the circuit breaker will carry an overcurrent (below the short-time or instantaneous pickup current level) before tripping. See Table 1 for delay settings.

• Both long-time pickup and long-time delay

are on the field-replaceable adjustable rating plug. To change settings to more precisely match the application, various rating plugs are available. For instructions on replacing the rating plug, see Section

5 —Adjustable

Rating Plug Replacement.

• For Masterpact™ NT and NW circuit

breakers, the In value can be changed by replacing the sensor plug below the trip unit. For further information, see the instructions packed with the sensor plug replacement kit.

• The overload indicator light (C) indicates that

the Ir long-time pickup threshold has been exceeded.

• Long-time protection uses true RMS

measurement.

Thermal imaging provides continuous temperature rise status of the wiring, both before and after the device trips. This allows the circuit breaker to respond to a series of overload conditions which could cause conductor overheating, but would go undetected if the long-time circuit was cleared every time the load dropped below the pickup setting or after every tripping event.

NOTE: Micrologic trip units are powered from the circuit to always provide fault protection. All other functions (display, metering, communications, etc.) require external power. See 15 for more information.

Figure 7: Long-Time Protection Switches

Micrologic 2.0A Trip Unit

B

A

Micrologic 5.0A Trip Unit

B

A

C

Micrologic 3.0A Trip Unit

B

A

Micrologic 6.0A Trip Unit

B

A

C

Table 1: Micrologic Trip Unit Long-Time Delay Values

1

Setting

Long-Time Delay in Seconds

tr at 1.5 x Ir 12.5 25 50 100 200 300 400 500 600

tr at 6 x Ir 0.51 2 4 8 12162024

3

tr at 7.2 x Ir 0.34

1

Ir = In x long-time pickup. In = sensor rating. Trip threshold between 1.05 and 1.20 Ir.

2

Time-delay accuracy +0/-20%

3

For Micrologic 5.0A and 6.0A trip units, when tsd is set to 0.4 on or 4.0 off, then tr = 0.5 instead of 0.34.

0.69 1.38 2.7 5.5 8.3 11 13.8 16.6

2

NOTE: If checking trip times, wait a minimum of 15 minutes after circuit

breaker trips before resetting to allow the thermal imaging to reset completely to zero or use a full-function test kit to defeat the thermal imaging.