What is the minimum insulation value required for a cable between phase to phase and phase to earth of 380 Vac 50Hz circuit, having load arround 800 amps.

2 Answers   DEWA, TATA,

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why we use to transmit the power in three phases intead of single phase ?

4 Answers  

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if i have to use 14 kw what size of power cable can i use and size of earth cable also.

2 Answers  

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what are the oils used in transformers cooling? n which type transformer is used in power systems?

1 Answers  

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what is surge voltage and surge current?

2 Answers   MES,

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how many testing use in power transformer?tell equipment names?

2 Answers   ABB, Electrical,

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sometimes, eventhough the HV side of the transformer is opened there is a voltage in LV side .How is it possible?

4 Answers  

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how does bode plot have an advantage over root locus? how does it determine the stability of a system depending upon the location of poles and zeroes?

2 Answers   NBKR,

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we hav seen in electric engine of trains only 1 wired slidng conecctn is there frm ovrhead line,howevr to complete a ckt in dc postv n negtv two conection has to b there...so where is tht negative is been connectd or where it is grounded...?

5 Answers   ABB,

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What is the difference between RMS and average value

5 Answers   CEERI, HPCL,

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Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?

0 Answers   Hindalco,

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Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason

0 Answers  

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