Answer Posted / sharafuddeen
we are applying 1000v for LV cables and 2500-5000 volts for
MV cables.the megger value depends on the leakage current
during the injection of voltage.
so for minimum ,if we consider the allowable leakage
current as 100 micro amperes,the minmum insualtion
resistance for Lv cables is 10 mega ohms and and for mv
cables 25-50 mega ohms.
but normally the megger values are in the range of giga
ohms.
the formula KV+1 is not suitable for cables .it is suitable
mainly for the equipments like tranformers,motos...
| Is This Answer Correct ? | 49 Yes | 11 No |
Post New Answer View All Answers
Explain what is clipper and clamper circuits?
how we can find of current direction(supply comming/out going direction) when a transmission line passing through sides.
why we have and use 3 phase not 2 or 4 or other in power system?
How to calculate the no of Ceiling fan (1200mm sweep) per unit area?
Dear Sir I am living in Jaipur Rajasthan now I did complete my b tech degree in electrical engineering in 2012 Sir how I gate certificate of competency for electrical supervisor
what is the formula for calculating the phase clerance between two phases and phase to earth how to calculate the cable for a motor
Write the force balance equation of ideal spring element.
Define resonant peak?
Draw the single line diagram of the power station?
what is interfacing in computer studies?
Why we are using only Dyn11 tranformer in distribution system but not using a Dyn1 in distributing system?why not and advantage and disadvantage in both
What is a DC series motor?
why only exciting current is shown not primary current in transformer???
when will be the iocl interview results ifaced the interview on september 8 th
Why strting torqe high in inducation motor?
