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#1 candy

candy

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Posted 18 April 2009 - 03:23 PM

Hi all...

In my project(FEED Stage), there is a 11kV Switchboard supplying a 2MVA, 11/.525kV Transformer, which in turn feeds a 525V MCC. Power cable sizing for the primary & secondary has been decided.The control cabling requirements for the same is to be decided.
I presume that a 19 core control cable will suffice for WTI/OTI trips/alarms i.e Trafo Marshalling to MCC panel side while a 7 core control cable for inter-trip between LV & MV breaker, if required.

Pls guide whether the above consideration is okay or not.

If anybody can suggest about detailed wiring from transformer marshalling box, it will be helpful.

#2 tc50

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Posted 27 July 2009 - 03:55 AM

Can somebody enlighten me on what is the Marshalling box?


QUOTE (candy @ Apr 19 2009, 12:23 AM) <{POST_SNAPBACK}>
Hi all...

In my project(FEED Stage), there is a 11kV Switchboard supplying a 2MVA, 11/.525kV Transformer, which in turn feeds a 525V MCC. Power cable sizing for the primary & secondary has been decided.The control cabling requirements for the same is to be decided.
I presume that a 19 core control cable will suffice for WTI/OTI trips/alarms i.e Trafo Marshalling to MCC panel side while a 7 core control cable for inter-trip between LV & MV breaker, if required.

Pls guide whether the above consideration is okay or not.

If anybody can suggest about detailed wiring from transformer marshalling box, it will be helpful.






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