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what are the different pre- commissioning tests performed on distribution transformer, power cable and switchgear?????
1 5563what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?
2300I am an electrical power engineer and arranged power system for a data center, I installed MCB, ELCB and erthing system TN-C-S. But some times several ELCBs Disconnect circuits at the same time! what may be the reason? (the ELCBs are 25A ,30mA)
9 12828If we connect the capacitor banks for DG set for maintainig the power factor, it will effect to alternator windings??????????
7 12051How can calculate the efficency of the rectifier. input 240V AC, current 5 amps,P.F 0.98, Output is 54 V DC,62.6 A.
10 27061In case of 11kV dual delta bank what are the recommended protections with specific CT / VT requirements? The capacitor bank is to be connected to the main 11kV switchgear from where the H.V.Motors and auxiliary 440V loads.
1 3021Hai I have 2500KVA,Transformer,13.8KV/380.DELTA/STAR.How much load that I can take interms of current?How can I calculate also when I have loads in KW?
L&T,
10 17902Post New Electrical Engineering Questions
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?
Write the current equation in series RLC circuits.
Why a Permanent Magnet Generator has higher frequency as compared to frequency of main alternator?
Generator,motor and alternator Working principal Please explain easily
what is the function of gss in the dg set.
What is Instantaneous Earth fault relay,how will work
1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve
How can I calculate ISF of current transformer?
i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors
how can we calculate the ratio of caustic soda and water in lrs.
what is the synchronous timer ? and it applications.
What are the disadvantages of thermal power plant?
WHY NUTRAL GROUND SYSTEM USED IN 33KV SYSTEM
what is earth-fault?when it occurs? to check where it occurs what type of test should we do?
WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?
