For a Potential Transformer(PT), the primary neutral terminal must be grounded before energization. Why....? What will be heppend if we energize the PT without grounded the primary neutral point? Why..........?

2 Answers  

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What is the polarization index value ? (Pi value)and simple definition of polarization index ?

0 Answers  

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WHAT IS START TO INDUCTION MOTER IN STAR TO DELTA OF >5HP ?

0 Answers  

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How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current

0 Answers  

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Electrical breakdown strength of an insulating material depends on............?why because?

2 Answers  

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what is RMU ?

26 Answers   MacLellan, Shalaka Infra Tech,

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Why is earth connected to neutral on transfomer installations

2 Answers   VACC,

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Assume a condition such that two motors of rating 6.6kv,415v are connected to blower,so tell me which motor draw large current give appropriate reason?

2 Answers   NTPC, Student,

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Min and  max capacities of VCB,ACB,ACCB,OCB,MCCB and MCB

3 Answers   apspdcl,

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What types of CMOS memories have you designed? What were their size? Speed? Configuration Process technology?

0 Answers   AFG, Afghan Telecom, GE, IBM, SECL, Sun Pharma, TNPL,

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if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

0 Answers  

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I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

0 Answers  

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