Answer / pillay

I have not had this problem all this while anyway for a
motor to burn out running on star delta starter must have a
reason like
too heavy a starting load
quality of winding after rewinding
contacts of starters
starters itself including timers and o/l relays

why we test the core balance of the transformer?

1 Answers   Siemens,

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11KW Delta motor is taking about 44Amps in star and goes upto 70Amps in delta and trips OFF. The rated current is 26Amps. Application is for the blower. The motor takes ( no load without coupling impller ) only 2.5A and 5Amps in star & delta starter test.Need to know why its taking high current.

10 Answers   Pfizer,

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How does solar power system work?

1 Answers  

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in case of OC+EF relay, how the burden is divided/calculated/shared by the CTs in case of normal (healthy condition) and during fault conditions.? three coils of OC & ef coil is conected in residual connection across the three CTS.

1 Answers  

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What is the full form of SON-T lamp?

1 Answers   HAL,

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why we use ac?why we use dc? why we we cannot use only ac/dc for all the applications?what happen if we use?

0 Answers  

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How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights

1 Answers  

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How do you calculate the actual power consumption of an inductive load appliance. Say, a deep freezer of 200watts

0 Answers  

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Why is the electric shock from the DC supply is more dangerous than the shock from AC supply.

8 Answers   IBM,

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what is impedence voltage

1 Answers   Thermax,

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what is the difference between inrush curent and jurk load.

2 Answers  

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why does the magnetic balance tests at transformers? how to provide earthing in flight?

1 Answers  

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