ABB DCT880, Service Manual

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10
Introduction
Chapter overview
This chapter describes the purpose, contents and the intended use of this manual.
Before You Start
The purpose of this service manual is to provide detailed information on how to service DCT880 thyristor
power controllers. The Safety instructions at the beginning of this manual need to be studied before
attempting any work on or with the thyristor power controller. Read this manual before servicing the thyristor
power controller.
What this manual contains
The Safety instructions are at the beginning of this manual.
Introduction , the chapter you are currently reading, introduces you to this manual and the thyristor power
controller rating plate.
Fault Tracing Thyristors , this chapter describes how to detect and select a faulty thyristor.
Handling the Semiconductors , this chapter describes the handling of thyristors and thyristor modules.
Exchange thyristors sizes T1 … T4 , this chapter describes the exchange of thyristors in thyristor power
controllers sizes T1 ... T4.
Exchange thyristors size T5 , this chapter describes the exchange of thyristors in thyristor power controllers
size T5.
Exchange of SDCS-CON-H , this chapter describes the exchange of a SDCS-CON-H.
Service , this chapter contains hardware change information, firmware download and technical hints.
Preventive Maintenance , this chapter describes preventive maintenance of thyristor converters.
Appendix A: Spare Parts list , Appendix A contains the spare parts list.
Target group
This manual is designed to help those responsible for planning, installing, starting up and servicing thyristor
power controllers.
These people should possess:
− Basic knowledge of physics, electrical engineering, electrical wiring principles, components as well as
symbols used in electrical engineering.
− Basic experience with thyristor power controllers.
Associated publications
A list of associated publications is published on the inner page of this manual’s cover see
List of manuals
.
Storage and transport
If the unit has been in storage prior to installation or is transported to another location, care must be taken to
ensure that the environmental conditions are complied with (see DCT880 Manual ).
Introduction
3ADW000449R0101 DCT880 Service Manual e a