Answer / k.prakashchandra

It is not possible to improve IR value as insulation can not
be injected.You can remove the water contents by heating the
coils by making full load current pass through ,using 3
phase dimmer-stat with rotor locked.

Answer / prem

insulation resistance is measured using megger.if megger shows
meaurable value in tens or hundereds then just change the insulatin of lt motor to improve it.

Answer / k.prakashchandra

With dimmer-stat (auto-transformer),it may not be possible
to get full load current in large motors .Then you have to
use strip heaters for heating the coils or DC supply (no
back emf)

detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron

0 Answers  

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what is difference between 5A and 100A CT constructional wise and operation?

1 Answers  

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Meggering minimum acceptable Ohms for insulation resistance.

1 Answers   TATA, Wood Group,

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1 Answers  

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what is amf panel & how it is working

6 Answers   ATS,

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how to reduce earth resistance in sandy soil.

1 Answers  

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Kindly Tell me name of the book for electrical estimation and costing ,calculation or web site to download

1 Answers   ABB,

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How are harmonics produced in AC machines?

4 Answers  

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What is the maximum current carrying capacity for both copper and aluminium cables for 1sqmm?

2 Answers  

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in 50 mw generator if field is open in full load running condition what happen and for protection which relay used?

5 Answers   century,

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what is the different between earth leakage relay and earth fault relay?

5 Answers   ME,

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what do you understand by dressing a HT/LT pole

1 Answers   Federal Polytechnic Nekede,

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