Answer / sewagudde

a relay is a device used to measure as specific quantity
(current, voltage, frequency,phase displacement etc)and
should that above quantity deviate from the preset nominal
value then a signal is sent to the circuit breaker to
operate.

why we use 20 KV, 10KA LA on 22 KV Line

2 Answers  

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What must the distance between two MV cables be when they are laid on tray?

0 Answers  

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transformers? power factor? machiences?

3 Answers  

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Why pmg used in electrical generators for excitation.is there any other method without pmg ?

1 Answers  

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working principle of AC Servo Motor with its construction

0 Answers   TATA,

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Define motor & pump?

3 Answers  

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A 100 MVA transformer may be cooled with?

6 Answers   HCL,

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6 Answers  

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why inductance is not present in a incandescnt lamp?

2 Answers  

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If MF is 30000, pt ratio is 110 kV/110 v then what is the ct ratio?

2 Answers  

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what's the exact magnitude of current, flows through Neutral?

0 Answers  

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why not phase to phase fault occure in raining day in hv sub-station?

1 Answers   Getco,

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