How many types of Differential protection are there?
and what the special arrangement are made at the time of
charging of a transformer on the Differential protection?
in fact, there are two.
-lowZ
-Hiz
2nd harmonic blocking should be employeed to prevent relay trip during Tr stating up,
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750kva 11/415kv transformer having percentage impedence is5.64%. 11KV HV whose current 39.37A and 415V LV whose current 1043.43A.resistance is 2.5ohm. find no load loss and full load loss?
advantage of cu cable over al cable
Everybody Knows What is ACB, VCB but anybody tell me what is ST?
How many methods use the load flow solution?
You are given 220 V supply source, four wires, an ammeter and voltmeter. There is no any indication or description on meters. How will you identify which is ammeter or voltmeter?
The 3 phase Delta connection RB=440V, BY=350V,.......* is Line to Line voltage RY= ? And Formula....?
How is the speed of a DC shunt motor related to the armature current?
I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?
difference between over current and over load protection?
when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)
how can a race around condition be eliminated using master slave flipflop?????
What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.
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