Answer / linu mohan

RELAY CODE NO.-32
DIRECTIONAL POWER RELAY

Answer / sanjay d. dabli

DPR IS DIFFERENTIAL PROTECTION RELAY & IT IS USED FOR FAULT CURRENT PROTECTION.WEATHER IT MAY EARTH FAULT OR PHASE TO PHASE FAULT. IT'S NO IS 64.

WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION

0 Answers  

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why should the primary of transformer be connected in delta in a heat run test?

0 Answers   Bhel,

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What is the permissible value of earth resistance and as per which standard / act / rule ?

3 Answers   HBL Power Systems,

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why three phase capacitor takes unbalanced current in capacitor bank?

0 Answers   Aggreko,

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While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

0 Answers  

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What are the three constants associated with a steady state error?

0 Answers  

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what the purpose of data retrivala panel in substation

1 Answers   NCC,

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How to test and satisfy the conditions of the vector group YNd1 for power transformer?

1 Answers   Areva,

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what is MUSS?

1 Answers   HP,

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i have 6oo kva dry type transformer and its neutral is not grounded even body of transformer ground i want to know it is safe or not ?

2 Answers  

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How do you classify the different types of torques?

2 Answers  

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When charging a 20 MVA , 33kV/6.6kV transformer through regulated (0-6.6 kV or 0-33 kV) source on no load , what will be the maximum current drawn by transformer from source and what sould be the source capacity.

5 Answers   TATA,

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