Answer / hardik patel

we want to measur the insulation resistance.for resistance
we have to use a dc voltage.

Answer / k.prakashchandra

To maintain the potential difference continuously

ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

0 Answers  

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difference btw neutral and ground?

2 Answers   ERG,

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power factor is max for which welding a.arc b.resistance c.gas

2 Answers   Bhel, HCL,

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Three phase power is measured with two wattmeeter for balance three phase load.the reading of one wattmeter is zero.we can conclude that the power factor of balance load is?

1 Answers  

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what is differential relay in power transformer??

8 Answers  

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why using touble tube lamp use in factory?

3 Answers   ONGC,

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Explain cmrr?

0 Answers  

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Suppose an electric motor with a controller is not working. What is the sequence of testing you will do in your troubleshooting?

2 Answers   Emerson,

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what is residuel magnetism

1 Answers  

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What is the different between Insulator & Di-electrict?

2 Answers  

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Leakage current,un balance current which relay using for high voltage transmission?

0 Answers   Banking,

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a transformer can beb used as aload?give discription

2 Answers   Esses Eltech Systems,

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