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INSTRUCTION MANUAL
For
HIGH CURRENT TEST SET
MODEL MS-2A
It is essential that this instruction book be read thoroughly before putting the equipment in service.
APPRECIATION
We are indebted to the manufacturers of circuit breakers and motor overload relays, who have given their time
and advice in the preparation of this instruction book.
IMPORTANT
The information and data contained within this instruction manual are proprietary with
MEGGER . The equipment described herein may be protected by one or more U.S. letters
patent. MEGGER specifically reserves to itself all rights to such proprietary information as well
as all rights under any such patent, none of which is waived by the submission of this
instruction manual to anyone.
The recipient, if a Government agency, acknowledges that this instruction book and the
equipment described were procured with "Limited Rights" to technical data as described in
ASPR 9-203 (b).
Copyright MEGGER ,
1983, 1984, 1985, 1986, 1987, 1988, 1991, 1992, 2008
Part 710026
Rev. 1 8/1/2008
ii
TABLE OF CONTENTS
SECTION PAGE
INTRODUCTION
GENERAL DESCRIPTION .....................................................................................Bulletin
SPECIFICATIONS...................................................................................................Bulletin
SAFETY PRECAUTIONS ................................................................................................ 1
THEORY OF OPERATION.......................................................................................................... 2
DESCRIPTION OF CONTROLS ..................................................................................... 2
SELECTION OF OUTPUT TERMINAL ......................................................................... 5
OVERLOAD CAPACITY................................................................................................. 7
STORAGE AND OPERATION CONDITIONS .............................................................. 8
TEST PROCEDURE ..................................................................................................................... 9
TIME DELAY OF MOTOR OVERLOAD RELAYS ...................................................... 9
INSTANTANEOUS ELEMENT OF MOTOR OVERLOAD RELAYS........................ 11
THERMAL ELEMENT OF MOLDED CASE CIRCUIT BREAKERS ........................ 13
INSTANTANEOUS ELEMENT OF MOLDED CASE CIRCUIT BREAKERS .......... 15
CIRCUIT BREAKER GROUND FAULT TRIP DEVICES .......................................... 17
OVERLOAD DEVICES MAINTENANCE DATA ................................................................... 19
MAINTENANCE OF MOLDED CASE CIRCUIT BREAKERS .................................. 19
MAINTENANCE OF MOTOR OVERLOAD RELAYS ............................................... 20
USING THE TEST RECORD SYSTEM ........................................................................ 22
SERVICE DATA......................................................................................................................... 22
SERVICING .................................................................................................................... 22
SERVICE AND REPAIR ORDER INSTRUCTIONS.................................................... 24
TABLE OF CONTENTS
Produktspecifikationer
| Varumärke: | Megger |
| Kategori: | mätning |
| Modell: | MS-2A |
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