Interested to Buy Any Domain ? << Click Here >> for more details...
what is the difference between earthed and unearthed cable?
- 24 Answers
- 58537 Views
- Cords Cable, Essar, Torrent Power, I also Faced
- E-Mail Answers
Answer Posted / ravi kaslikar
Power Cables can be classified into Earthed and Unearthed
cables. The terms "earthed" and "unearthed" refer to the
application for the which the cables are to be used.
By Earthed system, we mean a three phase system whose star
point is grounded directly. In this case, in the event of
the earth fault, the voltage in the faulty phase will
become zero. The voltage between the healthy phases and the
ground will be the same, 11kV/1.732 or 6.6/1.732.
However, in case of an earth fault in an ungrounded system,
the voltage between the healthy phases and the ground will
be equal to the phase to phase voltage. i.e. 11kV or 6.6 kV.
Hence, the insulation level of these cables needs to be
higher.
Thus a cable suitable for a 11kV earthed system will be
suitable for a 6.6kV unearthd system.
| Is This Answer Correct ? | 13 Yes | 3 No |
Post New Answer View All Answers
what is electrical machines
what's producer of XLPE cable laying in undergroung
As per the Anchor capstan motor specification, full load current is 200A. starting current is 1750 A and acceleration time is less than 8 seconds. Please guide for selection of cable size.
Which motor connection is preferable star-delta or delta-star?
how can we phase identification in a distribution line,how we recognise that which phase is coming for a house hold connection.help me............
What is inrush current?
can we install HT panel & LT panel side by side or how much clearance is required ?
details of oil cell size of Breakdown voltage test of tranformer oil details as per Standardswith mushroom electrodes?
What are the components of feedback control system?
What is the main use of rotary phase converter ?
what are the main applications of transistor in non-linear region?
we are small scale industry in production of rice & rice bran. Pls let me know how to take contract demand for our industry.. (for information we have total 600.hp)
What are the types of transformers according to the arrangement of iron cores?
we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???
what are the principles of a booster converter?
