what are the different pre- commissioning tests performed on distribution transformer, power cable and switchgear?????
1 4874what 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?
1880I 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 10152If we connect the capacitor banks for DG set for maintainig the power factor, it will effect to alternator windings??????????
7 9904How 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 24641In 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 2411Hai 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 15475Post New Electrical Engineering Questions
What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?
Why the cores of large transformers build up of circular cross section?
in shunt clippers why a resistor is used in sereis with the input
Why can't we parallel the secondary circuits of two voltage transformers?
What is force on parallel conductors ?
What is I to C?
i had aplied Hindustan Petroleum corporation limited for the post of maintenance technician -Electrical,i want model questions,if anybody have please send it or please advice?
What is resistance of 50meters, 16sq.mm, single core copper cable?
what are the advantages and disadvantages of oil filled cables over XLPE cables
What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?
What do you mean by Frame 5 Gas Turbine as well as Mark II.
I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.
Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?
what is kvarh? Please define it With calculation General motors ?
why we testing the core balance of the transformer before comissioning?
