1. how much normal earth resistance in earth pits(neutral
and body earth) and transformer neutral and body earth &
panel earth.
- 12 Answers
- 96580 Views
- HP, Malladi Drugs and Pharmaceuticals, Pearl Engineering, PL, I also Faced
- E-Mail Answers
Answer Posted / rr0505
Earth resistance of earth pits shall depend on the terrain
in which the same is provided. Accordingly, based on soil
resistivity data of the location, no. of earth pits is
determined to ensure Grid earth resistance value below 5
Ohms for electrical grids,
For solidly grounded neutral of transformers, resistance
between Neutral & Body earth as well as panel earth shall
be zero.
| Is This Answer Correct ? | 124 Yes | 24 No |
Post New Answer View All Answers
what can be the causes of capacitor start motor having a higher current that its actual
how 650 volts creates? where is use?
what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?
what is the difference between vector scale and vector diagram?
plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in
how the B-H loop obtain under the static condition
if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?
is it necessary to earth the rmu before cutting off the transformer winding?if yes why?
WHAT WOULD BE THE FORMULA OF WIRE GAUGE FOR A FULL LOAD CURRENT
Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.
How does zener phenomenon differ from avalanche breakdown?
234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,
why we are not giving the zone 1 trip command to the master trip relay
my b-tech percentage is 50%. what answer will satisfy the hr ?
Define end float in a motor?
