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Marshalling_transformer


candy

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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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  • 3 months later...

Can somebody enlighten me on what is the Marshalling box?

 

 

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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