how many types of colling system it transformers?

Answer Posted / salai bawi ding

1.NAN (Natural Oil,Natural Air) Cooling
2.ONAF (Natural Oil,Force Air) Cooling
3.OFAF (Force Oil,Force Air) Cooling
4.OFWF (Force Oil,Force Water) Cooling
5.ODAF (Direct Oil,Force Air) Cooling
6.ODWF (Direct Oil,Force Water) Cooling
7.OFAN (Force Oil, Natural Air) Cooling

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.

2951


describe the constructional features of an auto transformer and its principle operation

1799


Define sensitivity?

651


If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

615


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

2061






Differentiate between voltage and current feedback in amplifiers?

620


what happens when dc generator coupled with cycle shaft.also explain what happens when its loaded

1630


What is PQA???Applications........

1872


Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

617


what is meant by CT`s saturation ? Can we use Metering CT`s with Protetection CT`s ?

1654


What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

1083


what causes contact chatter when there is no demand on the air conditioning unit?

1602


what is the size of cable for 15kw motor and 85 meter cable length using with vfd

1946


i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

1525


How much ph is maintained of water resistance starter for slipring induction motor ?

1956