how to check the earth resistance value& what is the
minimum earth resistance for good earthing sysytem.
- 33 Answers
- 144521 Views
- Brookfield, BSNL, DMRC, Epoch, KPTCL, Polycab, Power Control, SIEA, Siemens, Wipro, I also Faced
- E-Mail Answers
Answer Posted / bk sharma
It should be near <0.5 ohm for good earthing.
| Is This Answer Correct ? | 64 Yes | 11 No |
Post New Answer View All Answers
Explain difference between stand by earth fault and residual earth fault protection?
a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5
why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!
in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?
We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.
On what principle electric motor works?
how can decide the current rating of oltc
Is MEN and RCD related to each other ?? IF yes then how??
In power transmission using open belts or horizontal shafts it is preferable to have the slack side of the belt on the top because
What’s electric traction?
What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?
in shunt clippers why a resistor is used in sereis with the input
What is the type of feedback used in an op- amp schmitt trigger?
write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.
How to calculate Voltage regulation of 22 KV Over head Line.
