Answer / guest

merz price protection

Answer / liaoxuewu

I am working on offshore industry, recently i have a
request from client(petrobras) for our newbuilding, it
require a ANSi code 48 loss of phase protection for
generator. As i understand, the ansi code 48 is a lock of
rotor starting time supervision for motors. most of the
protection relays are provided this function just for
motor. don't know what is the really means for client
requirement' loss of phase protection ansi(48)' for
generator and how to achieve it. Anybody can help? thanks
in advance.

Answer / bob

step away from the generator!

to vary valtage from 0 - max a variac is necessary . so how to design for high power applications nearly about 200KW power

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Which fault is caused by lightening and thuderstorm a. Line to line fault b. Single line to ground fault c. Double line to ground fault

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what the main difference of the 3 phase and 2 phase power supply??

3 Answers  

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what is the meaning of neutral displacement ???

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Conventionally, capacitors are considered to generate reactive power and inductors to consume it,how??????

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What is class ab operation?

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why high current produce in case of transformer when turns are internally gets shorted.

3 Answers   TCS,

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HOW DOES THE PERCENTAGE DIFFERENTIAL PROTECTION WORK IN POWER TRANSFORMER

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where is core-type and shell-type construction suitable for transformers ?

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What do you mean by cold shinkable cable joint.How it is done.

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how can i use REF and diffrencial relay both in 1 CT core for transformer protection?

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importance of reactive power management

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