Interested to Buy Any Domain ? << Click Here >> for more details...
what are the standard values for resistances(Megger testing)
between L&N, L&E and N&E (L=Live,N=Neutral, E=Earth)?
- 1 Answers
- 9875 Views
- I also Faced
- E-Mail Answers
Answer Posted / pswin
You ask the value between L,N and E. So I will assume that you will test for single phase and the test voltage must be 500 v scale and full scale is 100 mega ohm.Minimum value should be 0.5 mega ohm between each conductors. If lower than that value, the cable or wire is not certified to use. For three phase, above answer is acceptable,too.
| Is This Answer Correct ? | 16 Yes | 3 No |
Post New Answer View All Answers
Explain mechanical rotational system?
What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.
FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?
How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?
A low wet bulb temperature indicates
Define conversion efficiency of a power amplifier.
Haw to check conductivity of budbar
How do we arrive at selecting reactive capacitance value as 30% of h.p rating of motor?
in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?
Alternator rotor earth fault relay circuit
1.Z transform always lies around ? a) origin b) pole c) zero d) z=1. Multiples Mcqs which is bother me can’t find answers on internet. Some help required with little explanation . Note: this is not homework or related to any test. Thanks
Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
The inventer is a battery, but if lost current at home u will turn on the fan but the is AC and inventer battery is dc . Then how the fan was rotating. What device Or machine in fan converst the Dc power to Ac power
Why AC current leads voltage in capacitor and how?
