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




Answers were Sorted based on User's Feedback



What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / ramkumar

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

Is This Answer Correct ?    129 Yes 28 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / 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 ?    96 Yes 6 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / mitesh v dixit

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 ?    43 Yes 7 No




What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / ashish

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 ?    70 Yes 46 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / manoj mahajan

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 ?    26 Yes 6 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / mitesh v dixit

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 ?    19 Yes 3 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / pijush kanti pal

not more than 2 ohm for good earthing

Is This Answer Correct ?    20 Yes 7 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / ranjeet

For house hold maximun value of earthing can be 4
ohms.But for a substation it should be less than 1 ohms.

Is This Answer Correct ?    10 Yes 1 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / yohanraja

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 ?    18 Yes 12 No

What should be the earthing resistance of an industrial substation and also What should be the hou..

Answer / mandar a. bhide

For industrial less than .5 ohm's
For house hold less than 1 ohm's

Is This Answer Correct ?    9 Yes 3 No

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