ABB DCT880 - SDCS-PIN-H Board and Fuse Removal (T1-T4); Remove the SDCS-PIN-H board; Remove the broken semiconductor fuse(s); Install new semiconductor fuse(s)

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8. Remove the SDCS-PIN-H board.
9. Remove the broken semiconductor fuse(s).
Install new semiconductor fuse(s)
1. Ensure that the new semiconductor fuse(s) are of the correct type (see Appendix A of this manual).
2. Reinstall the new semiconductor fuse(s).
3. Perform an OHM test to make sure the semiconductor fuse(s) are ok.
4. Reinstall the SDCS-PIN-H board.
5. Reconnect all cables and plugs at the SDCS-PIN-H:
− Auxiliary voltage input (X99).
− External measurement channels (X54, X60, X65).
− Voltage measurement (X51, X52, X53 and X55, X56, X57).
− Cooling fans (X41 … X44) if existing.
− Snubber resistor (X30, X31).
− Gate leads (X15, X17).
− Temperature sensor (X22).
− Current transformers (X3, X4, X5).
Attention:
Make sure the CTs are connected properly (U2 ⇒ X5, V2 ⇒ X4 and W2 ⇒ X3).
6. Reconnect the flat cables at the SDCS-CON-H (X14, XC12, XS13), the cable at X38 and re-hinge the
electronic tray.
7. Reconnect the grounding / holding screws at the electronic tray.
8. Reconnect all I/O plugs at the SDCS-CON-H.
9. Reinstall all plug in options (do not forget the screws), the design cover and the control panel.
Service
3ADW000449R0101 DCT880 Service Manual e a