Answer / k.prakashchandra

It can be started if NRV is employed.Otherwise the air
pressure inside the compressor cylinder offers resistace to
the movement of the piston.

Answer / jaya senthil nathan

Air compressor is directly coupled induction motor.
Intially compressor is in loaded condition means induction
motor is not able to run the air compressor.for more
reference air compressor is widely using in agriculture
bore wells.

Answer / saratha

BECAUSE THIS IS AIR COMPRESER SO WE START THE AIR COMPRESER
IN UNLOADED.HOW AIR COMPRESRE CAN UNLOADED.......WHAT A
STUPID QUESTION... BETTER LUCK NEXT TIME..ASK GOD QUS..K

During he starting up of the motor, the upstream's MCCB (350A) always trips due to the UVT relay activated. Can Star-delta starter use for a 20kW Motor (For a powder mixer machine) cause voltage-dip in the supply line voltage? If so, what are the recommended solution to eliminate/reduce the transient voltage dip in the line voltage?

4 Answers  

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If the ceiling fan is on slow speed, does it consume less electricity?

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HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?

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what is differnce between grounding and earthing or both are same?

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what is the speed of current?

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Dear All we are having a problem in G120 BOP showing alarm A0503, F0052, F0060 we can not remove fault alarm ,Please any body help us. kowsar

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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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Why HT motor of 3.3 kw or 6.6 KV, one side foundation ( mostly non drive end ) keep insulated from ground ?

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synchronous motor of 13.5MW having which type protection? and how to set relay?give me relay setting calculation for different protection for this motor assume efficiency,power factor and other term if neccecery

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1 Answers  

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what is the function of step up transformer?

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