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how u select control transformer for a mccb panels or any panels?for expample we hav 440 volts maim supply and control volts is 230v?
2167How to run 1ph motor(230 VOLTS its full load amps is 4.5 ampa))with 480 volts main(we didn hav neutral)Thn we go for step down transformer.Our load 10 amps,so we conisder this amps in primary are secondary side?
1 3503140 is load amps for a equipments and what ratio of CT requied for installimg ammeter to amps montering purpose?
1 4240If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?
4484To test Transformer we give HT side 440V to see wheather that it is producing 17.6V on LT to verify Voltage ratio is correct or not but when we give the 440V voltage to LT side then what will happen to HT voltage ?
3 8160in 33KV or 66KV system which connection is aviable on high voltage transformer primary delta or star ?
3 6207Post New Electrical Engineering Questions
In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??
how to generator maintenance (A Check, B check,Etc)
what is the formula to calculate voltage drop/loss on 66KV Transmission Line?
8. A DYNAMOMETER TYPE WATTMETER RESPONDS TO THE.......
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
What is the real function of reverse power relay in generator panel while syncronising?
how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.
can the measured percentage error during calibration of single phase energy meter be negative?
how line turns ratio changes in 3 phase with change in connection
please tell me when we start motor without load in star or delta connection whose current above condition,pl write formula
What is the difference between Generator Differential Relay and Transformer Differential Relay?
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
We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.
Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss
how is the testing of an REF relay? what are the test REF circuit having?
