Answer / ramniveth

there is no CT to sense DC current

but it can be sensed by using two sets of rectifier units
placing one input to primary side of transformer and the
other in secondary side of the transformer.

but this is too expensive

Answer / sp

for measuring current on dc ckt. A shunt connected in the
ckt, drop of mv volt measured and shown accordingly.
2mv -10amp
4mv -20amp

Answer / vikramsena_reddys

A direct current transformer in which the primary consists
of an elongated strip of superconductive material, across
the ends of which is applied a direct current potential.
Parallel and closely spaced to the primary is positioned a
transformer secondary consisting of a thin strip of
magnetoresistive material.

WHAT IS SEMICONDUCTOR? EXPLAIN DETAIL. FOR EXAMPLE TAKE A PENCIL.THE LEAD IS MADE UP OF GRAPHITE IT IS A CONDUCTOR.THE OUTER COVER IS MADE UP OF WOOD IT IS INSULATOR.PENCIL IS A SEMICODUCTOR MATERIAL.

5 Answers  

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Can you explain about pole discrepancy scheme

0 Answers   NCC,

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1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

4 Answers   Havells,

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Procedure for conduting vector group test on power transformers.why it is conducted?

6 Answers   Grasim,

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What is the type of electrical motor used in mining industries?

2 Answers  

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How much allowable difference current between on three phases Dear sir, We have a 1870 KW HT motor, 11 Kv supply,FLA-120A,2870 rpm,2-pole squirrel cage induction Motor.And stator is connected in star connection with Liquid resistance stater to limit the starting current.It has coupled with Centrifugal air compressor.My question is it is loading 73% of FLA taking R-phase 86.7 A, Y-phase-85.4A,B-phase- 78.3A.why the B phase current is that much of difference.Is it allowable, or any one tell me how much allowable current.If any method to calculate.

1 Answers  

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what will happen if i will done heart shape hole in transformer core?

1 Answers   Bhel, ONGC,

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why rotor current reading is taken & why not stator?

4 Answers  

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Good day everyone,currently in our premise we using 30kw slip ring motor with resistance bank which we use as forward and reverse at conveyor bar handling. So,my question is how do we calculate the resistance bank which is suit the motor. Kindly,assist me... thank you

0 Answers  

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Is MV canble armour can be earthed at both ends?

2 Answers  

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What percentage netural current is in netural depend upon the phase current

1 Answers  

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what is difference between differential protection and distance protection and how we calculate the sloop?

5 Answers   OPS, Power Grid,

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