Answer / hamed

Soft starter means useing auto-transformer to increase the
voltage gradually till it reach full speed.

Is=Voltage/sqr.root(X^2 + R^2 ),
So it is clear from the formula that the Is is small when
the Voltage is small.

in 1-phase 230v,how in 3-phase 440v. in each phase in between 230v.

0 Answers  

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What do you mean by phasors?

0 Answers  

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How can we prevent the (Home)inverter supply flow to the main supply line?

1 Answers   L&T,

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which type of material is used to transformer laminated core?

6 Answers  

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What are the two major types of control system?

0 Answers  

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I have a 33 KV sub stn with two mother transformers 33/11 KV of capacity 3150 and 1600 KVA respectively. The total connected load 16809 KVA(11/0.433KV).how i calculate the max current & how i decided the CMD.

2 Answers  

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What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

20 Answers   Jindal, Pharma, TAAT, TATA,

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What is voltage 

4 Answers  

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WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.

0 Answers  

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how to commissioning the genset with amf panel?

0 Answers   Cummins,

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What are IP protections used for electrical panels, JB, equipments installed in explosive zones like Petrochemicals, Oil & gas

0 Answers  

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why T/F winding temp measurement cts are odd secondary current ie,109A/1.2A/1.4A?

0 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

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