on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help
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why phase & neutral is use in tv? why earthing not use ?
I have a 1000 kVA Transformer(11kV/0.415kV) and a APFC panel of 400 kVAR(LT).Now if i want to remove the LT APFC panel and install a HT(11kV) APFC panel on the HT side is the HT APFC panel will work same as the LT APFC panel(improve the power factor),if yes what will be rating of the HT APFC panel?what is the formula to calculate HT APFC panel rating???
if we want to increase the back up time of an UPS what should we do ? if we want to decrease the charging time of a battery/batteries attached with the UPS what should we do ?
Should the neutral earthing of 33/11KV D-S transformer, be connected to the earth grid?(Yes/ NO) why?
1 Answers HAL, Vijai Electricals,
WHAT TYPES OF OIL(STRUCTURE) ARE USED IN POWER TRANSFORMER INSULATION?
how can we know the size of cable cross-section from current rating ?
Why the colour of insulator is always is chocolate in colour?
What are IR values and what it should be for coil and for insulator
0 Answers GPSC Gujarat Public Service Commission,
What are the different protection systems used to protect the transformer internally and externally?
The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition
what is the bus bar size of 2700 amp ACB breaker ? and what is the cable size ?pls detailed answer ?
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