What should be the earthing resistance of an industrial substation and al

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Question

What should be the earthing resistance of an industrial 
substation and also What should be the house hold earthing 
resistance?

Question Submitted By :: Ravi

I also faced this Question!!

Rank

Answer Posted By

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 1

aw per IS it should not be more than 1 ohm.

Is This Answer Correct ?

76 Yes

19 No

Ramkumar

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 2

For 1 kv to 33 KV The earthing Resistance Should be less
than 0.5 ohm.
For Domestic Purpose it should less than 2 ohm
Upto 1 Kv It should be in between 1 to 2 ohm
for EHV it should be less than 0.01 ohm

Is This Answer Correct ?

47 Yes

19 No

Ashish

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 3

hor residential area the earthing resistance should be less
than 1 ohm.
for substation of capacity less than 33 kv the resistance
in between 1-3 ohm.

Is This Answer Correct ?

15 Yes

35 No

Sayyed

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 4

according to IEEE maximun value of earthing can be 5
ohms.But for a substation it should be less than 2 ohms.

Is This Answer Correct ?

14 Yes

18 No

Abhaya Raj Singh

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 5

For residential it should be below 1 ohms. For EHV stations
and constructions it should be maintained below 0.5ohms.
And for LC systems it should be maintained below 5 ohms.

Is This Answer Correct ?

15 Yes

11 No

Yohanraja
[BBAE Arma M.E.P. Co. LLC.]

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 6

As per IS: 3043-1966, "Code of Practice for Earthing", the
Earthing Resistance shall not be greater than 5-ohms. The
Earthing Resistance of a Power Station shall be not more
than 0.5-ohm while that of a major and a minor substation
shall be not more than 1-ohm and 2-ohms respectively.

Is This Answer Correct ?

10 Yes

4 No

Manoj Mahajan

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 7

industrial earthing resistence should be very betwwen .5
ohms to 5 ohms.
0.5 ohms-excelent
0.5 to 1 ohms- very good
1 ohms to 1.5 ohms- good
1.5 to 2.0 ohms-satishfactory
2.0 ohms to 5 ohms- not satisfactory.
note imp- This resistence consider of near induviusal
earth pit only.equipement earthing value should be very
betwwen 0.5 ohms to 12 ohms depending on size & distence of
earthing netwerk(GI PATTI OR COPPER PATTI OR WIRE)utilise.

Is This Answer Correct ?

15 Yes

3 No

Mitesh V Dixit

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 8

not more than 2 ohm for good earthing

Is This Answer Correct ?

11 Yes

2 No

Pijush Kanti Pal

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 9

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 ?

18 Yes

2 No

Manoj Mahajan

Re: What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

Answer
# 10

ACTUALY IN EARTHING RESISTENCE OF INDUSTRIES OR RESIDENT OR
SUB STATION VALUE SHOULD BE VERY DUE TO SOIL RESISTIVITY OF
DIFFERENT AREA LAND SOIL. SUPPOSE IN NEAR SEA AREA GOA OR
OTHER THIS TYPE OF PLACE EARTH RESISTENCE VALUE SHOULD BE
EXCELLENT DUT TO HIGH MOISTURE & SALT WATER.
SO WE CAN ACTUAL MARKING THE RESISTENCE VALUE BUT IT SHOULD
BE 0.5 TO 1 OHMS IS GOOD IN ALL ASSPECT & SUFFICIENT GOOD
CONDUCTACE GEETING TO DICHARGE IN LAND.
AS PER INDIAN STANDERED DETAILS EQUIPEMENT EARTHING VALUE
SHOULD NOT INCRESED MORE THEN 11.2 OHMS. (EARTHING VALUE
MEASURE ON EQUIPEMNT IT SELF)

MITESH DIXIT

Is This Answer Correct ?

9 Yes

1 No

Mitesh V Dixit

12 >>

Question	Asked @	Answers
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