Answer Posted / satya dev ( knight frank)

For transmission system
DY11,

For distribution system

DYN11, YND1, DNY1

Satya Dev

I Need standard operation procedure(SOP)for 500kva Oil type transformer oil filtration & Procedure for IR value checking.

2823

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3ph motor running with unequal kw and different pf what are the reasons

1768

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i have total 8 dg sets for synchronizing and 2 buscoupler,1 sectoin dg no 1,2,3,and 2 sectoin dg no 4,5,6,and last section dg no 7,8 ....if buscupler no 1 and 2 is off mode ..than dg no 1,2,3,will synchroniz of another dg sets?

1777

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What is the meaning of utility ground and clean ground? How the distribution panel is grounded?

2486

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Why do we require transformer with less specific weight if supply frequency is increased?

1528

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Is it possible to use a S1 duty class motor for crane application (S4)? If not, why?

2388

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how to define tell me about self

1955

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what is the use of vcb & isolator in substation?

2318

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List the characteristics of filter?

997

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What is the maximum operating temperature for a thermoplastic insulated cable?

1073

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What if high voltage side circuit breaker of a ehv transformer instead of lvcb? Kindly elaborate.

1699

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please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.

1769

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How to synchronization will be done between two DGs ?

1711

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How to decide whether A / B / C / D curve type MCB should be used?

2230

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if a number of plc s are there then how many modbus to be used

1917

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