Answer Posted / satya dev

For Alternator..... Over Voltage & Under Voltage Relay,
Over current & Earth fault relay but all these are not
directlay connected to alternator, It is connected to the
ACB of alternator to safe the Same during faults.


For Transformer...... Buckholz Relay, Winding temperature
Indication(Alarm & tripping system) Oil temp. Indcation etc.

What was the Dg set radiator and lube oil temperatures trip in ACB

1778

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sugest any typical project ?

1751

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for a 400kv t/m line with 10 ampere current will corona occur?

2143

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How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.

2091

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

2171

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reason of diode failure in alternator

1779

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What is process of anneling transformer core

1909

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Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?

2192

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The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.

1911

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how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.

2226

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what is the differation bewreen kwh & fundamental kwh in electronic trivector meters

2149

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can i connect the two phases of scott connected transformer,if not why?

1920

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What is diversity factor in electric installations?

1119

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How capacitor improves pf

1649

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What is meant by harmonic distortion?

1055

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