Answer Posted / raja

main control circuit

hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.

2686

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what is Fan Control Cubicle

2420

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what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV

2130

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Why we specify TNC switch with 1NO 1NC ,2NO 2NC ? how we get connection.?

1722

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

1789

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2073

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What is expention fastener (Fan)

1984

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what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....

1901

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What is the basic principle of operation of alternators/dc generators?

1055

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how does WTI work ?

1927

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What is Auto Mains Failure Panel & Auto Synchronizing Panel

1883

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how to select the double earth conductor if 21A full load?

2005

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Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

1427

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why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?

1762

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A cable with concentric PE conductor must be used with frequency converter circuits what does its means.?

1530

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