Answer / gunasekaran

transformer inrush current having more 2nd horminics it
will give the false trip to diffrential protection

Answer / sudheer868

It has frequency 2 times that of fundamental.Second
harmonics does not effect transformer as the supply is
symmetrical.If supply is symmetrical even harmonics are
automatically eliminated.

Can I use measuring current transformers in protection purposes?

7 Answers  

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if the field circuit of a d.c. shunt motor running without load gets opened, then the motor will

3 Answers  

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Why short circuit calculation is not required in LT cable sizing and requiredin HT cable sizing only

2 Answers   Chemtex,

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Why we need to carry out knee point voltage test of current transformer ?

1 Answers   Power Grid,

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How we calculate the size of ht cable for any transformer

0 Answers   WalMart,

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Why Alternator has 0.8 power factor?

2 Answers   Bhel,

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Ammeter of 1 ohm resistance measure max 10 ohm to measure higher resistance from it

6 Answers   BARC,

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1)we have 1000 cfm Blower,Dia-1Mtr,Velocity of air 94 m/s 2)We have Natural Air velocity 94m/s 3If i Put Wind Mill in natural air ,speed is 94m/s Then it will generate Assume 100kw 4)If i put same wind mill across the Blower,air speed is same 94m/s now the Question is Will it generate 100 kw?

0 Answers  

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What is the main difference between power transformer and Distribution transformer?

9 Answers   APTransco, Bhel, NTPC,

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what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.

0 Answers   NTPC,

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How to calcute the cable size for both HT and LT please specify the formula for that Regards Chethan C

1 Answers   Bhel, Student,

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What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????

0 Answers  

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