Answer / raghavendran

power frequency withstand capability of a CB is its
capability to with any over voltage at system frequency for
a definite period of time say 1min.

Impulse frequency withstanding capability is to withstand
the impulsive voltage levels for a predefined period of
time.say 1.2(rise time)/50 microsec(fall time),100KV
say(impulse voltage level)

Answer / ibrahim

the root mean square (r.m.s.) value of sinusoidal power
frequency voltage that the cb can withstand during tests
made under specified conditions and for a specified time

what is REF relay?

1 Answers  

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11/.433KV, 100KVA TRANSFORMER is supplied with .433KV AT ITS PRIMARY. HOW MUCH KVA IT CAN SUPPLY

7 Answers   ABB,

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How can we checked Killo Watts of Motor & Alternator?

0 Answers  

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Plugging is a phenomenon to= A braking the motor B to accelerate the motor C to run IM as generator D to start the motor

0 Answers  

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What will happen if we parallel two transformer with different %impedace?

3 Answers  

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what is the formula to find battery back up of ups?

3 Answers  

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what is the charging battery current of 80 kva UPS/100AH bocket make battery.

4 Answers  

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It is being often experienced that due to single phasing fault of any source transmission line of any closed loop synchronized circuit all the power transformers with primary stared trips but the power transformer with primary delta wont, why ?

1 Answers   MSEB,

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what is the differences between single phase ind. motor and three phase ind.motor?

3 Answers  

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why the India electrical supply transmission loss is high when compare to us

0 Answers  

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How to convert 110 volt alternating current to 12 volt direct current

2 Answers  

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Why should not we run the IM in low voltage, if runs means what will happen?(for example instead of 400V we give 250V supply)

2 Answers  

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