Interlock - single bus & transfer bus system

FOR 89-A/BAY ISOLATOR OPERATION:

1. 52 CB/BAY IN OPEN CONDITION.
2. 89AE/BAY EARTH SWITCH OPEN CONDITION.
3. 89LE1/BAY EARTH SWITCH OPEN CONDITION.
4. BB189E BUSEARTH SWITCH OPEN CONDITION

FOR 89-L ISOLATOR OPERATION:

1.52 CB IN OPEN CONDITION.

2.89AE EARTH SWITCH OPEN CONDITION.

3.89LE1 EARTH SWITCH OPEN CONDITION.

4.89LE2 LINE EARTH SWITCH OPEN CONDITION.

FOR 89-AE EARTH SWITCH OPERATION:

1.89-A ISOLATOR OPEN CONDITION.

2.89-L ISOLATOR OPEN CONDITION.

FOR 89-LE1 EARTH SWITCH OPERATION:

1.89-A ISOLATOR OPEN CONDITION.

2.89-L ISOLATOR OPEN CONDITION.

FOR 89-LE2 EARTH SWITCH OPERATION:

1.89C BUS ISOLATOR OPEN CONDITION.

2.89L LINE ISOLATOR OPEN CONDITION.

3.LINE DEAD CONDITION i.e U/V RELAY OPERATED.

FOR 52 CB CIRCUIT BREAKER FOR REMOTE OPERATION:

1.86-GA   HSTR/MTR RESET CONDITION.

2.86-GB   HSTR/MTR RESET CONDITION.

3.96-BB   TBC HSTR/MTR RESET CONDITION.

FOR 52 CB CIRCUIT BREAKER FOR LOCAL OPERATION:

1. 89-A ISOLATOR OPEN CONDITION.

2. 89-L  ISOLATOR OPEN CONDITION.

3.  89-AE  TBC EARTH SWITCH CLOSED CONDITION.

4.  89-LE1 EARTH SWITCH CLOSED CONDITION.

FOR 89-C ISOLATOR OPERATION:

1.NO OTHER ISOLATOR IS CLOSED TO TRANSFER BUS C

2.BB389E EARTH SWITCH OPEN CONDITION.

3.89LE2 EARTH SWITCH OPEN CONDITION.

4.52 TBC CB IN  OPEN CONDITION.

OR

1.52 CB IN CLOSED POSITION.

2.89-A ISOLATOR CLOSED CONDITION.

3.89-L ISOLATOR CLOSED POSITION.

4.89-A/TBC BAY BUS-A ISOLATOR CLOSED POSITION.

5.89-C/TBC BAY BUS-C ISOLATOR CLOSED POSITION.

6.NO OTHER ISOLATOR IS CLOSED TO TRANSFER BUS C

7.ADDITIONAL INTERLOCK PROTECTION TRANSFERRED MAY ALSO PUT THROUGH PROTECTION TRANSFER SWITCH.

TRANSFER BUS COUPLER

FOR 89-A / TBC ISOLATOR OPERATION:

1.52 CB / TBC IN OPEN CONDITION.

2.89AE / TBC EARTH SWITCH OPEN CONDITION.

3.89CE / TBC EARTH SWITCH OPEN CONDITION.

4.BB189E BUSEARTH SWITCH OPEN CONDITION.

FOR 89-C / TBC ISOLATOR OPERATION:

1.52 CB / TBC IN OPEN CONDITION.

2.89AE / TBC EARTH SWITCH OPEN CONDITION.

3.89CE / TBC EARTH SWITCH OPEN CONDITION.

4.BB389E BUSEARTH SWITCH OPEN CONDITION.

FOR 89-AE / TBC EARTH SWITCH OPERATION:

1.89-A / TBC ISOLATOR OPEN CONDITION.

2. 89-C / TBC ISOLATOR OPEN CONDITION.

FOR 89-CE / TBC EARTH SWITCH OPERATION:

1.89-A / TBC ISOLATOR OPEN CONDITION.

2. 89-C / TBC ISOLATOR OPEN CONDITION

FOR 52 CB / TBC CIRCUIT BREAKER FOR REMOTE OPERATION:

1.86-GA / TBC HSTR/MTR RESET CONDITION.

2.86-GB / TBC HSTR/MTR RESET CONDITION.

3.96-BB / TBC HSTR/MTR RESET CONDITION.

FOR 52 CB / TBC CIRCUIT BREAKER FOR LOCAL OPERATION:

1. 89-A / TBC ISOLATOR OPEN CONDITION.

2. 89-C / TBC ISOLATOR OPEN CONDITION.

3.  89-AE / TBC EARTH SWITCH CLOSED CONDITION.

4.  89-CE / TBC EARTH SWITCH CLOSED CONDITION.