what is neutral grounding? why is it required? what is
neutral grounding resistor and how is its value calculated??
- 11 Answers
- 62259 Views
- NTPC, ONGC, I also Faced
- E-Mail Answers
Answer Posted / santhosh(adityabirla group)
tranformer neutral is connected to earth is called neutral
grounding
if neutral is not earthed in case of one phase is ground
faulty then other two healthy phases voltage become
dangerously high which result insulation failure
generator neutral is connected to earth through resistance
is called NGR
R(NGR) = vph / FAULT CURRENT
EX VPH = 3.8KV , FAULT =100
R= 38OHM
| Is This Answer Correct ? | 17 Yes | 0 No |
Post New Answer View All Answers
When steam condenses and becomes water at the same temperature, the specific heat for the process in kJ/kg k is
HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER
Is it possible to measure the voltage of a battery from a single terminal?
What is power in wattage of 8.5 TR AC
what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?
number of I/O devices in siemense plc
as a electrical student why should i hire you?
Hi, Next week Iam appearing RRB exam for section engineer. So help me to get modal question papers for this position. Iam very thankful to you. Whether question will be fully techanical format or general form. Please give me a details regarding this exam.
please describe the Transformer setting, Motor setting, I/C setting, Tie setting
How many methods use the load flow solution?
What are the internal and external faults?
what is laser diodes?
What is the difference between AC and DC injection methods for rotor earth fault protection
What are the site acceptance tests for power cables, DG Sets, LT panels & 30kVA UPS ?
Which are resistive loads & which one are inductive loads : Refrigerator, Split air conditioner, ceiling fans, well pump, fluoresecent bulbs, T.V, CRT Monitors, Adsl Routers, C.P.U, Printers, Deep Freezers, Speakers, DVD Players, Microwave oven etc. ? Output Power for these Appliances Would be same like this : P = V * A * P.F Or would be changed ? thanks
