56
Exchange of internal semiconductor fuses in thyristor power controllers
size T1 … T4 (20 A ... 740 A)
Optional all DCT880 size T1 … T4 can be equipped with internal semiconductor fuses.
Required tools
Special tools or material needed in addition to standard tools for the exchange of thyristor modules:
−
Torx screwdrivers:
TX10, TX20, TX25
−
Torque spanner for electrical
connections:
13 Nm (M8)
25 Nm (M10)
50 Nm (M12)
−
Screws are metric type; use
appropriate nuts.
Before the work is started, disconnect the thyristor power controller completely from
the power supply, then check the voltage free condition and make sure, everything is
located in an electrical and mechanical safe condition!
Find blown semiconductor fuses
Using the OHM function of a normal multimeter, measurements must be made from both sides of the
semiconductor fuses.
Remove blown semiconductor fuses
1. Remove control panel and design cover.
Service
3ADW000449R0101 DCT880 Service Manual e a
Summary of Contents for DCT880
Page 1: ...DCT880 Service Manual DCT880 Thyristor power controller 20 A 4160 A ...
Page 2: ......
Page 85: ...85 T2 160 A 245 A Appendix A Spare Parts List 3ADW000449R0101 DCT880 Service Manual e a ...
Page 86: ...86 T3 325 A 420 A Appendix A Spare Parts List 3ADW000449R0101 DCT880 Service Manual e a ...
Page 87: ...87 T4 550 A 740 A Appendix A Spare Parts List 3ADW000449R0101 DCT880 Service Manual e a ...
Page 88: ...88 T5 890 A 960 A Appendix A Spare Parts List 3ADW000449R0101 DCT880 Service Manual e a ...
Page 89: ......
