what is the relevance of knee point voltage in protection and metering grade CT ? and basically what is knee point voltage ?

2 Answers  

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What is a commutator?

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1)we r having one problem .one dry type transformer(6.6KV/433V)is taking high magnetizing current on delta connected HV side of "U" phase when compared to other two phases.could any body tell the reason why it is happening? 2)why CT secondary side protection core has got higher winding resistance when compared to that of metering core of same CT?

2 Answers  

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what is meant by PU value ? anyone can you explain briefly to me ?

3 Answers  

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explain the types of drives

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what is the knee point voltage ? what is differtial rela? what is impedance and % of impedane? what is the postive phase sequance ? negative phase sequane ? and zero sequance impedance ? what is sortcircuit calculaion? why take calculation? define stabilty test ? why? what sentivity test? define merz protection ? what is the burden ? class 5p10, accracy, metering ct take knee point voltage test thet time what heppan why dont take knee point test to metering ct?

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what are frequency changers ? Tell me about commertially availble frequency changers ?

1 Answers   GE,

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what will be the effect on the voltage .if power frequency is increasing or decreasing.

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What is the range of the stator resistance of 3 phase induction motor?

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no of rotrs poles in salient pole synchronous machine

3 Answers  

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what happens when a dc shunt motor fed with an alternating suppy ?

1 Answers  

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define as synchronous generator

0 Answers   Enercon,

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