New istallation how many eathing have one transformer?
Names of earthing connect places?
Answers were Sorted based on User's Feedback
Answer / makpsingh
Any transformer should have atleat four earthings.
2 connections for its neutral earthing and
2 connections for its body earhtings
All the connections should be with dedicated earth pits
which may be interconnected for relaiblity and to have
lower earth reistance value.
These earth pits should be duly marked and to be tested on
a dry day once in year of earth reisistance and earth
continuity. Earth Resistance value should be less than 5
ohms and if it is greater then these earth pits should be
treated to bring dowun the value.
Is This Answer Correct ? | 61 Yes | 4 No |
Answer / vijay sagar reddy
Any electrical parameters have 2 Earthins
: 2 Neutral Earthing
: 2 Body Earthing
Is This Answer Correct ? | 30 Yes | 0 No |
Answer / vijay sagar reddy
Any electrical parameters have 4 Earthins
: 2 Neutral Earthing
: 2 Body Earthing
Is This Answer Correct ? | 15 Yes | 6 No |
Answer / gaurav sinha
Any transformer should have atleat four earthings.
2 neutral earthing and
2 body earhtings
Is This Answer Correct ? | 9 Yes | 1 No |
Answer / manikandan
Thats depends upon the vector group of the transformer.in
case star-star,the neutral earthing is require 4Nos
(Primary/Secondary)earthing and transformer body is
required 2Nos earthing.Types of earting is more than 2.That
is depends upon the standard practice.
Types
1.Direct earthing(In India)
2.Inductance earthing(In practice in UN)
3.Using resonant coil
Is This Answer Correct ? | 3 Yes | 2 No |
Answer / kishore
along with above said earthing thransformer bushing is also
earthed which is mandatory
Is This Answer Correct ? | 8 Yes | 8 No |
Answer / hero
along with above said earthing thransformer plate earthing
is required
Is This Answer Correct ? | 5 Yes | 5 No |
Answer / ravi nalli
Whether neutral (from neutral bushing) is connected tank
body is correct
Is This Answer Correct ? | 2 Yes | 3 No |
Answer / manikandan
Now days in normal practice we are using 100mm Dia cast
iron pipe length of 2.5Mtr.It is good conductivity compare
the pipe and plate earthing.
Is This Answer Correct ? | 0 Yes | 8 No |
Which of the following can be operated at higher frequencies ? -SCR -MOSFET -IGBT
What is mean by making & breaking capacity of circuit breakers?
What is full form of ELECTRICAL?
3 Answers Changwoon, DP World, Electrical, GSS, HCL, ITI, L&T, Maruti Suzuki, MCC, SMR, Somany Ceramics, TRDP, Wipro,
what is working of Master trip relay ?
what is the voltage between nutral and earth?
we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer
The knee point of a current transformer is normally unique and known.So why in the nameplate of a CT they put the minimum value like this Vk> 400v.
how can we say that stator magnetic field rotates with synchronous speed?can we derive?
How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
in 11kv generators the neutral point is connected to earth via earth coil while in the 33 / 11 kv transformer the neutral point is connected to earth via earth resistor why?
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
Why power factor is arising in electrical circuit, is it possible to eliminate from the circuit, why