Interested to Buy Any Domain ? << Click Here >> for more details...
how to calculate the megger values for motor, cables and
transformers?
- 2 Answers
- 31151 Views
- ITC Infotech, I also Faced
- E-Mail Answers
Answer Posted / priyan
see sundar
Meggering test is done for any electrical equipments to
find the insulation resistance value.
As per the standards for testing the machines 3 methods are
there
1)spot reading 2)time-resistance testing method 3)step
voltage test
the following is the second mehtod it is in use nowadays
PI=10 min/1 min value
Then the Polarisation index is 2 which is consdierd
good.When it is below 1.5 you can heat the tranformer or
motor then the value will come up.
| Is This Answer Correct ? | 15 Yes | 4 No |
Post New Answer View All Answers
wat is the first thing dat is needed, 2 lay a cable in some area??
what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?
What difference between ref protection and differential protection ?
dear all i am kumara now current working in electrical designing of control and relay panel i want learn some substaion design then any book are available. pls mention name and authour
how to measure earth resistance of a substation
r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā
what is the working process of over & under voltage relay.
how can i use REF and diffrencial relay both in 1 CT core for transformer protection?
What is the necessary and sufficient condition for stability.
Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss
300m long and 30kw inductive loade 3phase supply how many size cable required
We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.
If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?
What Normal(Tangent) towers and Tension(Cut-point) Towers?
Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.
