why characteristics of overcurrent relay is time-->psm instead of time-->current?

0 Answers   ABB,

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what is use of mccb.

1 Answers   Simplex,

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How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

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Why 1/3 is used in symmetrical components?

0 Answers   ABB,

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Transformer rating=> 15/20 MVA.Why there are two raings? What should be the rating of the fuse at the secondary if the voltage level is 13.8KV/4.16KV?

1 Answers   Bhel,

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If a Power Transformer Fails and the transformer manufacturer suggest that "Do all electrical test on the transformer?". What are the test to be conducted in this condition?

5 Answers  

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please give me all the Alarm .Trip ,Safety Relays & Conditions of Chiller mail me on ashokbabunhce@gmail.com

0 Answers  

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why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

0 Answers  

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which type of starter is suitable for single phase motor ?

11 Answers   IOCL,

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In Megger which types of test we can do ? and How it works? How to use?

3 Answers   Power Grid,

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A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque developed is 20 Nm under rated field condtion. the speed of the motor under the rated field condtion , when it is connected to a 100V DC source and delivering 10Nm torque....

2 Answers   DRDO,

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difference between torque mode and speed mode

4 Answers   JSW,

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