Interested to Buy Any Domain ? << Click Here >> for more details...
What should be the earthing resistance of an industrial
substation and also What should be the house hold earthing
resistance?
- 20 Answers
- 112975 Views
- Jindal, Pharma, TAAT, TATA, I also Faced
- E-Mail Answers
Answer Posted / manoj mahajan
The Earthing Resistance of a household should not be
greater than 5-Ohm. This is in keeping with the Indian
Stadards, so also the international standards, viz, IEEE
(Institution of Electrical & Electronic Engineers) and IEC
(International Electrotechnical Commission) which stipulate
that no Earthing Resistance shall be greater than 5-Ohm.
The restriction is required to ensure the safety of the
occupants and the electrical appliances.
The Earthing Resistance of a Power Station should not be
greater than 0.5-Ohm because a Power Station is required to
carry high earth currents.
The Earthing Resistance of a Major Substation such as
a "Receiving Station" or a 400kV/220kV/110kV/66kV etc
Transmission or Stepping Up/Down Substations should not be
greater than 1-Ohm.
The Earthing Resistance of a Minor Substation such as an
11kV/230V Distribution Substation should not be greater
than 2-Ohm.
This clarifies my first answer.
| Is This Answer Correct ? | 104 Yes | 6 No |
Post New Answer View All Answers
what is protection class current transformer.
what are the reasons of CT circuit faulty in busbar protection scheme?
hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .
Classify drilling machines.
Inverter. converter. Ups.MCB.solar.alternators. motors.
why servomotor motor? where i apply for best output?
can we use NPT glands in LT panel
What is the drawback of static coefficients?
Whats the difference btwn a latch, port,data bus buffer? Do they all not hold data in d flip flops??
1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function.
WHAT IS START TO INDUCTION MOTER IN STAR TO DELTA OF >5HP ?
Can you tell me more about pu systems (per unit systems )calculation in large power systems? how to get the base for voltage and power in generator, transformator and transmission lines?
Explain the term parallel path in dc machin ?
On 400 amp factory load how kvarh capacitors provide
What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?
