is it necessary to earth the rmu before cutting off the transformer winding?if yes why?
how to electrically make connection to ferroli GN2N?
what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?
how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.
How to megger test 11 kV cable and the acceptance IR value
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?
what is ps impedance test
how technical is calculated in 11kv line and lt line
Wind mill
we have a rewind motor of 2Hp,2800Rpm, 220Volt AC. how can we choose the running capacitor for this motor, any formula for that?
what is the function of gss in the dg set.
why we use circuit breakers for switching instead of normal switching device?
- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
how to calculate the mesh earth network resistance in such substation, is there any recommended resistance values with references , thanks!
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