Table of Contents
Page
INTRODUCTION ..................................................... 1
General ................................................................... 1
Static Trip Calibration Marks ................................... 1
Restoring Lost Calibration ....................................... 1
DESCRIPTION ........................................................ 2
Description .............................................................. 2
Rating ..................................................................... 2
Calibration ............................................................... 2
Construction Details ................................................ 2
Control Panel .......................................................... 3
TESTING STATIC TRIP III Devices ........................... 6
Testing Static Trip Device on Circuit Breaker ........... 6
Connections—Use Cord Set 18-732-184-508 ........ 6
Long Time Pick-Up Test .......................................... 6
Short Time Pick-Up Test ......................................... 8
Ground Pick-Up Test .............................................. 8
Instantaneous Pick-Up Test .................................... 8
Long Time Delay Test ............................................. 8
Short Time Delay Test ........................................... 10
Ground Time Delay Test ........................................ 10
Bench Testing Static Trip III Devices ...................... 10
TESTING STATIC TRIP Il DEVICES ........................ 12
Testing Static Trip Device on Circuit Breaker ......... 13
Connections—Use Cord Set 18-732-184-506 ...... 13
Long Time Pick-Up Test ........................................ 14
Short Time Pick-Up Test ....................................... 14
Ground Pick-Up Test ............................................ 14
Instantaneous Pick-Up Test ................................. 14
Long Time Delay Test ........................................... 15
Short Time Delay Test ........................................... 15
Ground Time Delay Test ........................................ 15
Bench Testing Static Trip II Devices ...................... 17
TESTING FIRST GENERATION TRIP DEVICES ..... 18
Connections—Use Cord Set 18-732-184-506 ...... 18
Test Procedures .................................................... 19
Bench Testing ....................................................... 25
Dual Device ........................................................... 25
TESTING LIMITRIP DEVICES ................................ 26
General ................................................................. 26
Connections—Use Cord Set 18-732-184-507 ...... 26
Settings of Bands and Pick-Ups ........................... 28
Test—Long Time Pick-Up ..................................... 28
Test—Short Time Pick-Up ..................................... 29
Test—Instantaneous Pick-Up ................................ 29
Test—Long Time Delay ......................................... 29
Test—Short Time Delay ........................................ 30
Bench Test—Limitrip Devices ............................... 30
COMMENTS ON TEST RESULTS ......................... 31
TESTING THE TRIPPING ACTUATOR ................... 32
Testing the Actuator on the Circuit Breaker ........... 32
Bench Testing Actuators ....................................... 32
TESTING THE TRIPPING TRANSFORMERS ......... 33
Test Preparations .................................................. 33
Continuity Tests .................................................... 33
Exciting Current Test ............................................. 33
REPAIR OF STATIC TRIP DEVICES ....................... 35
