whatis the test procedure for lightning arrester which was
installed one year back. i want check it whether it is
working or not.
Answer Posted / raghavendran.r
There are two methods of testing the lightning arresters..
1.Power factor test.
2.Infra red test.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
what is the ckt diagram of a tubelight and is it the simplest ckt of electrical engineering and also the component?
I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.
what is vA rating and class of a ct.
what is a pilot wiring and whys that called a pilot wiers
The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.
How to justify this statement ??? "Capacitors in series provide less capacitance but higher voltage breakdown rating for the combination"
how brushed dc motor operating ?
where solid grounding and where grounding through ngr done and why?
if the number of poles generated in stator and rotor side of an induction motor are different then what will happen and why?
How phase displacement change in the over current relay coils.
when we have to purchase the transformer by own i.e how much load will preferred HT connection?
why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?
how are reversing the direction of rotation of dc motor
In vapour absorption refrigeration machine fluids used are
what is differnce btwen lll and lllg faults