what are the specifications we must look at to select a relay for any capacity motor?

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When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

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Our Slip Ring Induction Motor Frequently tripped By Earth Fault While Starting time and in Normal Operation Time also Kindly Let me Know the Reason. Application Ball Mill - Cement Mill

1 Answers  

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WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF SAME RATING???

5 Answers  

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there is a line fault some where on the ove head distribution line. how will i locate the fault for clearing it? ofcourse i have to megger the line but what information makes me clear that the fault is in that section of the line?

2 Answers  

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how to set relay setting? and example calculation...

0 Answers   JSW,

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hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

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How to see the inductance in a transmission lines

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why induction motors are rated at 0.8 power factor.

0 Answers   Bhel, TN,

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Multi-step core is used in transformer to: A) Increase the output B) Decrease the cost of core material C) Decrease the cost of copper D) Increase the efficiency

1 Answers   Accenture,

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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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how to check three phase motor torque value?

0 Answers   Apollo,

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