how much insulation resistance 11kv & 33kv under ground
cable between earth to phase & phase to phase.
Answers were Sorted based on User's Feedback
Answer / vinay gupta
between earth to phase it must be from 50megaohm to
infinite. and from phase to phase it must be from
500megaohm to infinite.
| Is This Answer Correct ? | 50 Yes | 13 No |
Answer / praful
Thumb rule to measure the IR value is add 1.5 to the
operating voltage (convert the voltage in KVolts) the
answer is the min. required safe IR value (Mega ohm).
For Example the Operating voltage is 22kV then 1.5 + 22 =
23.5. 23.5 Mega Ohm is the min. IR value required.
The IR value must alaways be on higher side.
| Is This Answer Correct ? | 28 Yes | 11 No |
Answer / shivkumar sharma
Between Earth to phase insulation resistance must be twice
of operating voltage by H.T.( 2.5 k.v./5 k.v. )megger
| Is This Answer Correct ? | 4 Yes | 2 No |
Answer / mintu kumar pandit
insulation resistance 11kv to 33kv minimum IR value for new
cable ph to ph & ph to earth 400 megohms for 100 meter 1 minitue
cable after repair the resistance must not be less that
10 megohms ( megger size 1kv )
| Is This Answer Correct ? | 3 Yes | 1 No |
How many 2 ton window A/c can runs on a 125 KVA generator?
in conventional fan regulators how the current varies with speed?
How to select cable rating for HT/LT Panels
how much current a 100 sq mm busbar will carry?
how to mention 5mw generator in kva ? gen voltage is 11kv
CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?
why do we use star-delta starter. what is its need?
While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens
what is load which is indicated in power plant generation panel? in any power plant
what is transient voltage?
How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.
1.what is the difference between MPCB and MCB ? 2.what is the difference between MPCB and MCCB ?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)