Answer Posted / ram

1. switch on the elcb. press the test button on the elcb.
it should trip.
2. switch on the elcb. connect test lamp between earth and
output phase of the elcb. the elcb should trip.
if fails in both the condition the elcb is faulty.

how to interlock 3 nos MCCBs using under voltage coil. please provide me circuit diagram?

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for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

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List examples of current sources?

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Explain the different methods used in the choice of rotor slots for reduction of harmonic torques in an induction motor.

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when we have to purchase the transformer by own i.e how much load will preferred HT connection?

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What is pi controller?

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The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?

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HOW DO I CALCULATE THE SETTINGS FOR THE DIFFERENTIAL PROTECTION OF A 12kV/6.6kV, 6MVA,DYN11 XMER WITH PRIMARY SIDE CTR 400/1 AND SEC SIDE CTR 600/1?

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what do u understand about FACTS? how they are useful?

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