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how to setting Load amps tripping time and extra settings for load Transformer protection relay with
RMU panel using C&S model relay..?

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More Electrical Engineering Interview Questions

how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?

0 Answers  

We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

how the vaccum ckt breaker workes..? how the arc is quenching in it?

1 Answers  

what is the function of turbo charger in disel generators

1 Answers   Kirloskar,

Can you explain the phase displacement between primary and secondary of power transformer of any vector group(for ex)?

1 Answers  

i have ht transformer of 142 kva with air cooled facility,having secondary voltage 7850volt, and secondary connected full way bridge rectifier .i faced the problem repeatedly that transformer one coil and rectifier diode of two phase was burnt two times. i checked all the secondary ckt. no any short ckt found,then what will be the cause side

2 Answers   Modern Terry Towels,

what is residuel magnetism. and how order lead acid batteries for 24 volt. emergency lighting system.

0 Answers  

My meter CT is 200/5amps Then my electrical meter MF=???please suggest

2 Answers   KFC,

Bhel supervision exam question: If 2 generators are working in a network. And if suddenly the field of anyone generator weakens. What will happen in the network? 1. The generator will run as motor 2. The generator will run as motor in reverse direction 3. The generator will take lighter load 4. The generator will take more load

9 Answers   Bhel,

what is a universal motor? how it works?

4 Answers  

why field winding is placed on rotor winding not on stator winding in case of synchronous machine?

13 Answers   HAL, TATA,

why the under of transformer platform is filled with rock stones.

10 Answers   TNEB Tamil Nadu Electricity Board,

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