Hoe to calculate body earthing conductor size ?
- 1 Answers
- 8365 Views
- IES, I also Faced
- E-Mail Answers
Answer Posted / aamod tripathi
The body earthing conductor sizing is done in india and
internationally by IEEE 80 :2000 standard and IS code 3043
These instruct the different formulae which are to be used
for calculation purpose generally it requires
1. fault current
2. time duration of the fault
3. a factor which is denoted by K and is dependent on the
material used for earthing.Table (1.D)(This takes into
account the ambient and operating temperature of the
material)
In case of a power house where many Transformers and the
switch gears are installed there we have to install
acompletee earthing grid which is like a square or
rectangular net of rods. the number of rods and ground rods.
The most important point in both the powerhouse earthing or
any other kind of earthing we have to keep in mind that the
earthing arrangement should have the resistance less than 1
ohm........ it is an essential conditon that must be
fulfilled.....
| Is This Answer Correct ? | 14 Yes | 5 No |
Post New Answer View All Answers
How to calculate Voltage regulation of 22 KV Over head Line.
working principle of oil startar
what happen as when voltage drop(or may decrease) ? in case of atomic base theory?
Explain the propagation of harmonics in the network and influence of phase angle of harmonics.
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.
Can we transmit digital signal to long distance ?
Why we use duplex coil and hook switch in telephone system?
Explain Energy and Power signals?
WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?
what is mean by dry frequency
What is marx circuit?
Why is a plain induction motor unsuitable for wide speed control?
i have gear oil pump with single phase motor.some time its motor starts running in reverse direction rather than forward direction...whats the reason behind this issue. 1- either capacitor is week? 2- or winding is week?
What is essential to prove safe isolation of electrical circuit?
1.how many earth pits are required for 1000 k.w plant include substion , transformer ? 2. how many earth pits are required for 500kva generator.what is formula to calcute?
