Answer / chakri

33kv tr=300 ohm
11kv tr=500 ohm

Answer / s.naidu

Naphthenic mineral oil ( higher flash points ) and minimum
safe insulation resistance in 33KV TR-500 ohm
11KV TR-300 omh
insulation at temperaturs more than 120 to 140 c the gas
bubble are formed as a result of insulation deterioration
these is reasion of leading breake down.

what is the difference between switch yard to residential area.and how much required it.

0 Answers   GVK,

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why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?

0 Answers  

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A 230 v dc series motor is connected to 230 V ac supply, then

1 Answers  

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What is P.F? Formula for calculating PF in HT side?

1 Answers  

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Please provide me detail cable voltage drop calculation

1 Answers  

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in one substation we have two power transformers of 100mva,75mva capacity.statoin load is155mva.how much each tranformers share the load????

6 Answers   TNEB Tamil Nadu Electricity Board,

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when we start the tube light, then it takes initially 1100 volt, after glow it takes 120 volt?(when we give 220 volt a.c.)

3 Answers  

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Why one side of secondary of transformer is earthed, to supply single conductor of electric traction system?

1 Answers  

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in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

0 Answers  

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How to calculate per unit impedance of transformer?

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what is ring main unit(Rmu)? what is its function

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How does flights get the neutral(grounding)

1 Answers  

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