Answer / choudhri awais arain

vector group is important to use in case of parallelling of transformer.both transformer should have same vector group.
thn unbalancing of the voltages occure.

Answer / jayaram

electric curent have a some phase angle(phase to phase) so
used a vector form. it is used at which power have a
freqency

what is phase angle ? and also tells me why my phase-phase voltages are 390 rather then my single phase voltages are 221 and 223 respectivly?

2 Answers  

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We have isolation transformer 25kvA & ONLINE UPS 15KvA (3PHASE I/P,3PHASE O/P)where isolation should have connect,before UPS or after please brief.

1 Answers   DRJ ARDE,

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WHAT HAPPENS IF FUSE IS CONNECTED TO NEUTRAL WIRE

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SMPS (Switch Mode Power Supply) unit is denoted by KW or KVA?

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4 Answers   Essar,

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why auto transformer connected in star?

1 Answers  

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what is the function of LBB relay

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What is Wlak Test in Fire Alarm System????

2 Answers   Emerson,

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What is circuit breaker failure protection?

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What is the value of nuetral current in star connected load when DC is supplied to it???

1 Answers  

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