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When measuring the Insulation resistance of a motor winding (winding to earth) using a megger meter, Applied voltage(1000V) was automatically reduced to 500V. and the measured insulation resistance values are also very low (in Kohm range) Can anyone give me a reason???
3 7371typical per KM resistance values of ACSR DOG conductor for 33KV & 11KV OH system? typical per KM resistance values of XLPE 300Sq mm cable for 33KV system? typical per KM resistance values of XLPE 185Sq mm cable for 11KV system?
2 22201for 11KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV UG system what will be typical per KM "R" "L" "C" parameter.
2410how to caculate no load loss, load losses & impedance percentage in power or distribution transformers
4 6468anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?
1835I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....
2029A resistance, inductance & capacitance are connected in series between points A & B.The voltage drops across the resistance,inductance&capacitance are found to be 40V,70V&100V respectively. What is the total voltage between between points A&B (Vab)? a)210V b)70V c)50V d)230V
6 81851- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks
3334Post New Electrical Engineering Questions
Air refrigeration cycle works on the
where can the transformer having vector group Yny0 be used??
why three phase capacitor takes unbalanced current in capacitor bank?
what is the meaning of vcc
what is the main difference between power devices and signal devices
List examples of current sources?
Give some differences between open loop and closed loop control systems.
Explain how to determine capacitor tolerance codes?
can you any one give exact mathematical relation between AC current and DC current?
What do you mean by transformation ratio of instrument transformer?
Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.
what is the grounding Calculation formula? spouse i want to provide grounding to 3phase 18kw motor or i want to provide ground to 3phase 10kva dry type transformere or you give me any exemple...... Thanks.
What are the main parts of central chiller plant? Explain the function of each stage.
what is excitation/
What happen to generator if i have unbalanced load?
