Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / sharafuddeen
we are applying 1000v for LV cables and 2500-5000 volts for
MV cables.the megger value depends on the leakage current
during the injection of voltage.
so for minimum ,if we consider the allowable leakage
current as 100 micro amperes,the minmum insualtion
resistance for Lv cables is 10 mega ohms and and for mv
cables 25-50 mega ohms.
but normally the megger values are in the range of giga
ohms.
the formula KV+1 is not suitable for cables .it is suitable
mainly for the equipments like tranformers,motos...
| Is This Answer Correct ? | 49 Yes | 11 No |
Post New Answer View All Answers
How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?
How to select, design,size & calculate for 11 KV/33KV/66KV/132KV/220 KV/440 KV circuit breaker for HT side of transformer protection/HT distribution protection?
15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help
how to test power transformer.YNd11
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.
how to calculate voltage drop and followed by cable calculation?is there avail in formula?
TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?
WHAT IS IEC? & WHAT IS BENEFIT TO PRODUCT FROM IEC?
Hi, Next week Iam appearing RRB exam for section engineer. So help me to get modal question papers for this position. Iam very thankful to you. Whether question will be fully techanical format or general form. Please give me a details regarding this exam.
Why mostly the HV side of transformer has Delta?
where is the need for short circuit test for 3 see is required and why? can you explain in brief with application
What is meant by system?
Discribe type of fault in DOL and stardelta startor.
WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.
If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link
