what is the safe meggar values for motor, transformer HT, LT
and Cables?

Answer Posted / gins

More than 50mega ohms say that reference saramco check list
for megger test and for a hipot test this range will be more
than 100micro ampere.

Is This Answer Correct ?    10 Yes 9 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

665


is it possible for different brand of H.V transformers to run or operate in parallel to each other? if so how much disturbance can this affact the H.V bus bar?

1628


how many joints are allowed in underground HT cable of 1 KM

1349


1))why we run three phase or three different circuit from a single conduit 2)) why not two circuit of different phase run in same conduit?? and why we run same three cicuit of same phae run in single conduit??

1914


if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1321






How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

3878


At what factor resistance r of a conductor depends?

627


As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.

1375


What type of a DC motor would you use for a lift?

659


1. Design a counter which counts 0, 4, 8, 2, 6, and repeats using: 1.a using JK flip flops 1.b using T flip flops 1.c using D flip flops

1497


What do you mean by reach and reach the point of the relay?

789


11 kg trivevter meter has rating of -/5amps. And pt ratio11000/110v and is connected with 11kv ct/pt unit of cr ratio 75/5amps. And pt ratio of 11000/110v while checking accuracy of meter with HT Accuchek meter what value of PT ratio and CT ratio to be filled in Accuchek meter

1181


Explain difference between stand by earth fault and residual earth fault protection?

1519


What is turn ratio of a transformer?

650


What happens if we give the supply to the rotor of induction motor and make its terminal shorted?

3032