Answer Posted / pillay

I just wish to add something to the above. As said isolators are
generally used to switch on or off an unloaded circuit.They are
usually manually operated but breakers are capable to operate on
their own or remotely during over current or earth fault or just
to break the circuit with the help of under voltage or no volt
coils. The important fact is they are designed to operate on
loaded condition.

Define maximum demand?

1055

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what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

2159

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how can i use REF and diffrencial relay both in 1 CT core for transformer protection?

1865

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why transformer tank is in rectangular shape what happen when it is in step shape

1447

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What is the meaning of dedicated earthing?

2157

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In case of generator when we consume more power produces by it why load on generator increase and starts sound more. and how it is adjusted..

1936

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If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

1439

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in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

2104

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how to determine the inrush current of a transformer

2607

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why do we use 25kv supply for traction purpose?

1904

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What is an Air COmpressor

2241

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what are all types of cross section in AC cables?

2290

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Differnce between negative Pahse SequenceFunction and unbalance Function?

1737

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how did the testing of protection relays done through current injection

2078

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what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....

9199

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