Electrical Boards

11 KV Station Board:

OBC ( Station Board)

  • Tie to 4BA (Unit Board)
  • Tie to OBA (Station Board Unit-3)
  • ADPH-2 Transformer
  • Drives- MDBFP-4C
OBD
  • Tie to 4BB(Unit Board)
  • CHP-2 Transformer
  • HT to station auxiliary board OCB
  • Tie to OBB (Station Board Unit-3)
4BA
  • HT to unit auxiliary board 4CA-1
  • Tie to OBC
  • CEP-4A, 4C
  • PA fan -4A,
  • FD Fan -4A
  • ID fan -4A Ch-1 & Ch-2
  • CW pump-4A
4BB
  • HT to unit auxiliary board 4CA-2
  • Tie to OBD
  • CEP-4B
  • PA fan -4B
  • FD Fan -4B
  • ID fan -4B Ch-1 & Ch-2
  • CW pump-4B

3.3 KV Boards

OCB(Station Auxiliary Board)

  • HT to Station Service Board ODB(unit-4)
  • HT to BTST-2
  • HT to DMPT-2
  • HT to WTPT-2
  • HT to CWST-2
  • HT to Station Service Board ODB (unit-3)
  • HT to ODCT02
  • HT to ODCT02
  • Tie to OCA

4CA-I (Unit Auxiliary Board)
  • HT to CTST-4A
  • HT to Unit Service Transformer 4DA
  • HT to ESP field Transformer A1, B1, C1, D1
  • DRIVES- 
  1.  ECW pump (TG)-4A,
  2.  ECW pump-4A(SG),
  3.  BCW pump-4A, 
  4.  Mill-4A,4C,4E,4G,4J, 
  5.  IAC-2

4CA-II (Unit Auxiliary Board)
  • HT to CTST-4B, 4C
  • HT to Unit Service Transformer 4DA
  • HT to ESP field Transformer A1, B1, C1, D1
  • DRIVES- ECW pump (TG)-4B, ECW pump-4B(SG), BCW pump-4B, BCW pump-4C , Mill-4B,4D, 4F, 4H,4K

4DA(Unit Service Board)
  • HT to 4KA
  • HT to 4KB
  • HT to 4HA
  • HT To 4HB
  • HT to unit ACDB (4QA)
  • HT to Boiler ACDB (4HC)

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