Answer / mike

Less say if you had transformer in a station it was a 100kv
to 44kv the breaker between the bus an high side of the
transformer protecting it from a fault would be the high
tension. Once it leaves the low side of the transformer it
goes to a breaker that is between the transformer and the
low side bus this would be your low tension. These breakers
have ct that protect the bank with differiential relays.

Answer / chandru

ht - high voltage transmission
Lt - low voltage transmission

in magnetic field we send current to generate flux,why not voltage?

2 Answers  

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What is d role of reactive power in power system??How it produce & consume?

5 Answers   ABB,

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How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?

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what is settable hystersis protection? If any body knows plz kindly post the answer..

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What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

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How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

1 Answers  

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what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA

0 Answers   Mega Power,

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what is the exact direction of current? as we know current travels from higher potential to lower potential,so if we take battery +ve to -ve implies current direction is from positive terminal to negative terminal.,whereas electrons flow from negative to positive as they are attracted by positive ions.current will be the plow of charge but not flow of positive ions.please clarify my doubt friends.

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if there are six generators (3 gas CATT, one Jenbacher o1 MW each, and two nos Diesel 01 no 01 mw other 0.65mw EDGs ( say), 3 CAtt gas set have identical pole pitch,01mw EDG and Jenbacher gas Set have different pole pitch, how their power connection can be done to connect a common bus bar during installation. in short, how different pole pitched generators power connection can be done to connect a common busbar system through generators incomer ACBs.

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What is the actual calculation for transformer short circuit test?.

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1.Difference between vcb and Acb and partes. 2.Difference between STS and ATS.

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a transformer runs by electro-induction principle like all motors.then why dosen't it rotate just like any other motor

2 Answers  

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