Answer Posted / fajar

ow can I communicate with an Areva MiCOM P121 relay by
RS485 port? In other word, which command can I send and
what information can I have recieved? please send some
refrences, please. thanks

Can we put 3 layers of cable tray while installing tray

2355

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What is the lockout relay

1479

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Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

1735

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1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?

1952

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is it value of power factor is more than unit. whats effects in the source supply

2037

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I meggared my 2c*70 sq mm AL AR XLPE cable. its one end show 50 M ohm . is my cable is safe for laying. I have only one phase and neutral.

1801

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why output is out of phase in case of common emitter?

2094

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Define the term Capacitance and Inductance?

1057

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What is the physical significance of phase.. i.e. what is exactly the meaning in layman's language.. 1 phase, 3 phase etc ???

2125

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State the points to be considered for selecting a particular type wiring.

2001

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An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%

1850

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What is the name of transformers oil filteration equipment?

2021

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how much LT load can bear by the 100 KW HT connection.

2165

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power transmission pole used one support , that only for support or earthing

1905

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in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

2042

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