What is the difference between type1 and type2 relay protection co-ordination for motor feeders

0 Answers   DAE,

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Fire pumps are not used with ELCB control, why ?

4 Answers  

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In a transformer ,when voltage decreases current increases. but this is a violation of oms law.why?

15 Answers  

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can u give me a brief idea about power line carrier communication ??

0 Answers  

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Why not connect relay Y phase for over current and earth fault

1 Answers   HB,

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why restricted earth fault protection can not operate for phase faults??as there will be a current in secondary of ct,when a phase fault occurs!

1 Answers   GMR,

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defination of static variable compensator

1 Answers  

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How many types of protection relays are there based on the characteristic?

0 Answers  

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What is dynamo?How it works and what is the function of dynamo in a DG.

0 Answers  

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Safety of dry type transformer

0 Answers   Icon,

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A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.

0 Answers   VECL,

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is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

0 Answers   Wipro,

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