11kv/0.433kv, 2 mva , transformer , for protection and
metering how many CT/PT are required?
Answers were Sorted based on User's Feedback
Answer / shailesh taware
1 CT WITH 3 CORE
1st CORE FOR O/C & E/F PROTECTION
2nd CORE FOR METERING WITH INSULATION CLASS 0.5
3rd CORE FOR DIFFERENTIAL PROTECTION
1 PT WITH 2 CORE
1st CORE FORE O/C & E/F PROTECTION
2nd CORE FORE METERING
Is This Answer Correct ? | 10 Yes | 3 No |
Answer / manjunath kunigal
one set of tertiary winding CT/PT is sufficient for both
metering and protection.
Is This Answer Correct ? | 11 Yes | 9 No |
Answer / k n naidu
hi,
one three phase set of PTs for both protection & metering
and one three phase set of CTs with two secondary cores one
for metering and protection are required.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / mubanga mulenga
You need:
1)Inst., o/c, Metering & EF - 3 CT's
2) REF - 1 CT
3)SBEF - 1 CT
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / vikas chauhan
3 no CT (Double core) for 11 kv side for protection and
metering
3 no CT (Double core) for 0.433 kv side for protection and
metering
11/.110 KV 3 phase PT for 11 KV side
secondry side(.433KV side) phase directly connected for
Metering & select relays for .433 KV secondry voltage.
if you select differencial rotection
3 nos CT for Primary and 3 No CT for Secondry side and
interposing CT for Match and neutralise the current in
relay.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / d ramesh
11KV side(delta)
Line side 3core CT :1No. for metering, O/C&E/F protection,
Differential protection with ICT.
0.433KV(Star)
Nuetral CTs :1core for Standby E/F 5p20
Line CTs :3core CT:1No for metering, O/C&E/F
protection,Differential protection with ICT.
1No. 1-core CT in LV nuetral of Transformer of class 5P20
for earth fault protection.
panel side in the panel itself remaining CTs can be
provided for metering, O/C&E/F, and differential cores with
ICT. In both HV panel & LV panel.
Is This Answer Correct ? | 2 Yes | 1 No |
wat is the advantage of increse in frequency?how the powersupply range decreses as the frequency increses?like in america,it uses 110 ac and 60 hz?
HOW TO CALCULATE CT AND VT RATIO IN PRTECTION AND METERING?
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