Answer Posted / sonu kumar

The main advantage of using the star delta starter is
reduction of current during the starting of the
motor.Starting current is reduced to 3-4 times Of current
of Direcr online starting.

Hence the starting current is reduced , the
voltage
drops during the starting of motor in systems are reduced

what is the use of vcb & isolator in substation?

2315

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what is the formula to calculate voltage drop/loss on 66KV Transmission Line?

3635

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Can anyone explain me about the capacitor calculation

2120

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If more than rated DC voltage appears across trip coil of the breaker, what will happen? e.g. in 110V DC circuit system, if voltage across battery terminal showing 121 V

1601

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how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment

1522

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how to calculate the conductor size for certain KV transmission line and distribution line?

2448

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why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A

1940

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How Calculet The UPS AH In Load

1816

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In siemens PLC, why do we want to move the data ?

2259

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WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?

1919

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How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

2125

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what type questions asked in hp cl

1782

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What do you understand by avr?

989

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The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

1909

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Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection

8180

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