We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's

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How the value of KVAR of capacitor bank used in switchgears calculated??

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in Megger what type of voltage(AC or DC) are produce.how they work.

1 Answers  

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If the damper winding on the rotor of a synchronous motor is removed after starting what will happen?

7 Answers   IOCL,

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why we earth only one side of a power cable. And which side is advisable to earth.

1 Answers  

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sir i have applied for isro-09. still i did not got the HALL TICKET.

2 Answers  

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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What is the GI Earth Flat Size recomended for 33KV 2000KVA Distribution Transformer

1 Answers  

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Explain and give examples about VCB?

0 Answers   AZ Engineering, Vodafone,

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what is mathed of check the D.C MOTOR 181 KW (ARMATURE AND FIELD) WHAT IS THE MATHED OF CHECK THE THYRISTOR MODULE (HIGH CURRENT)

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What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?

0 Answers   Haldia,

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how the transmission voltage ranges are decided like 11kV,33kV,66kV,132kV,220kV,400kV,725kV.... why not choose the transmission line voltage as 23kV,164kV,440kV?? what's the reason??

3 Answers  

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