what are the various types of earthing? plz give brief
detail of all. also post pictures if u have.
- 22 Answers
- 40844 Views
- Aster Teleservices, Era Infra Engineering, Micron Electricals, I also Faced
- E-Mail Answers
Answer Posted / abhishek
2 main types of earthing are
1.pipe earthing:
In this method a copper plate of 60cm x 60cm x 3.18cm or a
GI plate of the size 60cm x 60cm x 6.35cm is used for
earthing. The plate is placed vertically down inside the
ground at a depth of 3m and is embedded in alternate layers
of coal and salt for a thickness of 15 cm. In addition,
water is poured for keeping the earth electrode resistance
value well below a maximum of 5 ohms. The earth wire is
securely bolted to the earth plate.
2.plate earthing:
When compared to the plate earth system the pipe earth
system can carry larger leakage currents as a much larger
surface area is in contact with the soil for a given
electrode size. The system also enables easy maintenance as
the earth wire connection is housed at the ground level.
| Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
how we find transformer capacity by ohm
current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer
What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?
Why is water motor not taking the pressure? what is the problem?
wat is meant by PX class in ct?
Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.
We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.
The series field winding has low resistance while the shunt field winding has high resistance. Why?
When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?
i applied for the ap transco please forward the freqventley asked QA
How does PLC work for sychronising of Two or more DG sets?
Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.
WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION
TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.
can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?
