Answer Posted / amit2009786

By controlling field resistance or flux..

What is the technical difference between On delay timer and a Star delta timer?

1559

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I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1831

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Why lose 1 phase voltage in 33kv to 415v stepdown transformer

1688

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how to calculate the Neutral transformer impedance?

2370

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we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

2170

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Why syn. Generators are used for the production of electricity?

1083

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difference between a diode and thyristor?

2153

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how 650 volts creates? where is use?

2136

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what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?

1898

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Explain about c.t?

1069

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why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?

3098

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If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.

1378

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what is the function of impulse relay

2464

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Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?

1876

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What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

2528

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