What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?
2278Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?
2195TO operate transformers in parallel, vector symbol of the both should be same.If one transformer name plate is not there, how can we conclude that whether the transformer is having the same vector symbol or not?
4 7822what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R
NCC,
2286Dear Sir, we met a disaster with our 62.5 kva genset, after rewinding we informed by our contract engg that due to return current coming in neutral & impropper earthing this happend. But after all set up & load balance we checked & found again we have about 20 to 32 amp return current on neutral. we have 12 airconditioner + 12 mini fridge on single phase line. Pl suggest any idea to solved this problem
3 5170Post New Electrical Engineering Questions
Phase control and integral control are used for?
State norton’s theorem?
What is meant by Im=30mA@Vk/2. How to know the kee point voltage for CT design
HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U
How is magnetic leakage reduced?
Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?
How to findout raw or ups power? its not indicated in socket,
Which type of transformer is used for lighting loads?
Define stepper motor. What is the use of stepper motor?
I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)
How to calculate of maximum demand if given 628kw, 785kva, 0.8 p.f.
what is the step by step formula for calculating bus bar phase and neutral size of a panel board.suppose the incomer of panel board is 100A..???step by step answer please
main difference between ac and dc?
What are the uses of lead compensator?
how to select the no. of brushes in a lap winding?