what is the std. earthing resistance for 440V system or
m/c, 33000/440 Volt substation? What is the std.?
Answer Posted / saic~ehvvibes
Earthing resistance standard values:
Without Grid (Individual Earth Pit) = Less than 01Ohm
With Grid = less than 05Ohms
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?
how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.
Why slip ring ind. motor power consumption is low compare to induction motor .same 90 kw motor used same load output
design of IGBT firing circuit for 11KV
Dry type transformers
Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.
What is frantic effect?
how to calculate the power factor when instantaneous voltage and current has harmonics in it ?
An active element is one which a. Supplies energy b. Absorbs energy c. Supplies energy and convert energy from one form to another
we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer
which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant
I want formula to calculate current loss with distance in km.I searched many sites but didn't right answer.Plz reply me
WHY THE RATINGS OF THE TRANSFORMER IS 33KV WHY NOT OTHER???
i want to know d working mechanism of tafe tractors next i like to know d engine type of apache bighs can anyone help me
what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.