SPECICATION NO. ETI/PSI/144 (12/91) SPECIFICATION FOR ... - rdso
SPECICATION NO. ETI/PSI/144 (12/91) SPECIFICATION FOR ... - rdso
SPECICATION NO. ETI/PSI/144 (12/91) SPECIFICATION FOR ... - rdso
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7. 220/132/110/66kV transmission line circuit-1 P.T. fuse fail<br />
(wherever required).<br />
8. 220/132/110/66kV transmission line circuit-2 P.T. fuse fail<br />
(wherever required).<br />
* There is no separate telesignal for PT fuse fail indication. The<br />
annunciation for PT fuse fail indication shall be done in case of any inconsistency<br />
between the status of feeder circuit breaker/paralleling interruptor and the catenary<br />
indications. (Feeder circuit breaker/paralleling interruptor when under power block is to<br />
be treated as ‗open‘ for this purpose.)<br />
(b) For each Scott-connected/single phase Traction Power Transformer, Auto<br />
transformer and associated switchgear<br />
(i) From transformer-1<br />
*9. TR-1 Alarm.<br />
**10. TR-1 Fault<br />
***11. TR-1 Trip circuit 110V dc fail<br />
<strong>12</strong>. TR-1 220/132/110/60 LV circuit breaker ―Locked –out‖ due<br />
to low gas/air pressure.<br />
13 TR-1 25kv CD-1 ―Locked out‖ due to low gas/air pressure<br />
14-19 TR-1 tap 1 to 6 position<br />
20 TR-1 Blower fans working<br />
21 TR-1 25kV CB-2 ―Locked-out‖ due to low gas/air pressure<br />
(In case of Scott-connected transformer only).<br />
* TR-1 Alarm: This has to come whenever any alarm viz. Buchholz Alarm,<br />
pressure relief device alarm, oil/winding temperature my high alarm and low oil level<br />
alarm occurs.<br />
** TR-1 fault: This has to come whenever the inter-trip relay (which trips both<br />
HV and LV breakers of the transformer) operates.<br />
*** TR-1 trip-circuit fail: Whenever the 110V dc supply to the control circuits<br />
fails or any of the trip circuits of 220/132/110/66kV or 25kV transformer circuit breakers<br />
fails.<br />
Necessary auxiliary contacts of various relays/indicators suitably wired up<br />
and terminated on the control and relay board at traction sub-station shall be provided by<br />
the Railways. Suitable relays or circuits required in the RTU at TSS for the telesignal<br />
shall be provided by the successful tenderer.<br />
(ii) From Transformer-2<br />
22 to 34-as for TR-1<br />
(iii) From Transformer-2(as required)<br />
35 to 47-as for TR-1<br />
(iv) From Auto Transformer-1<br />
*48. AT-1 Alarm<br />
**49. AT-1 Fault<br />
* AT-1 alarm: This has to come whenever any alarm viz. Suchholz<br />
alarm, pressure relief device alarm, oil/winding temperature high alarm and low<br />
oil level alarm occurs.<br />
** AT-1 fault: This has to come whenever any fault in the transformer is<br />
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