GE Industrial Solutions ProTrip Trip Units for Low-Voltage User Manual

DEH–40034

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ProTrip™ Trip Units

for Low-Voltage Power Circuit Breakers

User’s Guide

ProTrip™ Trip Units
Getting Started

Since this Trip Unit is available in a variety of configurations, please take a moment to compare the catalog number of
your purchased Trip Unit with the catalog number key below.

Example

PKO50 D 3 F 16 08 R Code Description Function

PK###
PIK##
PD###
PSL##

GE AK Breaker
I-T-E® Breaker
Westinghouse® Breaker
Allis-Chalmers® Breaker

D ProTrip Trip Unit Trip Unit Model

3 3-Wire Breaker Wiring

Fixed Cts Sensor Type

F

01

150 A

02

225 A

06

600 A

08

800 A

16

1600 A

20

2000 A

32

3200 A

40

4000 A
Long-Time , Short-Time, Instantaneous,

08

Switchable Ground-Fault

R Replacement unit Ordered as Replacement

Breaker Family

Installed CT

Overcurrent Protection

Example – a Trip Unit with catalog number PKO50D3F1608R has the following features:

• GE AK-50 circuit breaker

• ProTrip Trip Unit

• 3-wire breaker

• Fixed CT sensors

• 1600 A CT installed

• Long-time, short-time, instantaneous, and switchable ground-fault overcurrent protection

• Trip Unit was ordered as a replacement

WARNINGS

CAUTIONS

NOTES

DEH–40034

WARNINGS, CAUTIONS, AND NOTES

AS USED IN THIS PUBLICATION

Warning notices are used in this publication to emphasize that hazardous voltages, currents, or
other conditions that could cause personal injury or death are present in this equipment or may be
associated with its use.

Warning notices are also used for situations in which inattention or lack of equipment knowledge
could cause either personal injury or damage to equipment.

Caution notices are used for situations in which equipment might be damaged if care is not taken.

Notes call attention to information that is especially significant to understanding and operating the
equipment.

This document is based on information available at the time of its publication. While efforts have
been made to ensure accuracy, the information contained herein does not cover all details or
variations in hardware and software, nor does it provide for every possible contingency in
connection with installation, operation, and maintenance. Features may be described herein that
are not present in all hardware and software systems. GE Industrial Systems assumes no obligation
of notice to holders of this document with respect to changes subsequently made.

GE Industrial Systems makes no representation or warranty, expressed, implied, or statutory, with
respect to, and assumes no responsibility for the accuracy, completeness, sufficiency, or usefulness
of the information contained herein. No warrantees of merchantability or fitness for purpose shall
apply.

The following are trademarks of GE Company:
ProTrip™, MicroVersaTrip Plus™, MicroVersaTrip PM™

© 1998 GE Company

All Rights Reserved

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ProTrip™ Trip Units
Table of Contents

Chapter 1. Introduction

1–1 Applications............................................................................................................................................1

1–2 General...................................................................................................................................................1

1–3 Trip Unit Functions...............................................................................................................................1

1–4 Trip Unit Catalog Numbers...................................................................................................................2

1–5 Rating Plugs ...........................................................................................................................................3

Ground-Fault Protection.................................................................................................................4

1–6 Equipment Interfaces.............................................................................................................................4

1–7 Trip Unit Information...........................................................................................................................4

Trip Unit Label Information..........................................................................................................4

Selector Switches..............................................................................................................................4

Chapter 2. Trip Unit Setup

2–1 Overview .................................................................................................................................................5

2–2 Long-Time Pickup .................................................................................................................................5

2–3 Long-Time Delay ...................................................................................................................................5

2–4 Short-Time Pickup.................................................................................................................................6

2–5 Short-Time Delay...................................................................................................................................6

2–6 Instantaneous Pickup.............................................................................................................................6

2–7 Ground-Fault Pickup..............................................................................................................................7

2–8 Ground-Fault Delay................................................................................................................................7

2–9 Defeatable Ground Fault .......................................................................................................................7

Chapter 3. Trip Unit Status

3–1 Target Module .......................................................................................................................................8

3–2 Functions................................................................................................................................................8

Trip Targets.....................................................................................................................................8

Long-Time Pickup Status................................................................................................................8

Battery Test......................................................................................................................................8

Health Monitor................................................................................................................................8

Chapter 4. Maintenance and Trouble-Shooting

4–1 Trip Unit Removal and Replacement...................................................................................................9

4–2 Rating Plug Removal and Replacement...............................................................................................9

4–3 Target Module Removal and Replacement..........................................................................................9

Target Module Battery Replacement ...........................................................................................10

4–4 High-Current Testing..........................................................................................................................10

4–4 Trouble-Shooting Guide......................................................................................................................11

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ProTrip™ Trip Units

List of Figures

1. Front view of the ProTrip Trip Unit.........................................................................................................1

2. ProTrip rating plug................................................................................................................................... 3

3. Time-current curve illustrating long-time pickup.................................................................................... 5

4. Time-current curve illustrating long-time delay.......................................................................................5

5. Time-current curves illustrating short-time pickup.................................................................................. 6

6. Time current curve illustrating short-time delay with I2T OUT.............................................................6

7. Time current curve illustrating short-time delay with I2T IN..................................................................6

8. Time-current curve illustrating instantaneous pickup............................................................................. 6

9. Time-current curve illustrating ground-fault pickup...............................................................................7

10. Time-current curve illustrating ground-fault delay with I2T OUT.........................................................7

11. Time-current curve illustrating ground-fault delay with I2T IN..............................................................7

12. Target module........................................................................................................................................... 8

13. Removing the interchangeable rating plug. ............................................................................................9

14. Removing the target module. .................................................................................................................10

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ProTrip™ Trip Units
List of Tables

1. Breaker type referred to by the first character of the Trip Unit catalog number.................................... 2

2. Trip Unit type referred to by the sixth character of the Trip Unit catalog number............................... 2

3. Wiring type referred to by the seventh character of the Trip Unit catalog number............................... 2

4. Sensor type referred to by the eighth character of the Trip Unit catalog number................................. 2

5. Installed CT, as indicated by the ninth and tenth characters of the Trip Unit catalog number .......... 2

6. Trip unit functions, as indicated by the eleventh and twelfth characters of the Trip Unit catalog

number. ..................................................................................................................................................... 3

7. Catalog numbers for rating plugs............................................................................................................. 3

8. Summary of protective functions and setting values for each. ................................................................ 5

9. Nominal delays for the long-time delay bands......................................................................................... 5

10. Settings available for ground-fault pickup according to breaker frame size........................................... 7

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