Schneider Electric and 6.0A User Manual

3-EN

48049-136-05 Micrologic

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

Rev. 01, 07/2012

Table of Contents

ISH

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

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