What is the use of doing meggering for a cable
Answers were Sorted based on User's Feedback
Applying" a voltage, With two conductors that are supposed
to be insulated, the amount of insulation can vary
depending on the thickness of the insulating material, the
amount of moisture, or from being contaminated with an
electrically conductive substance. The insulation could be
thin in one or more spots due to improper manufacture, or
due to overheating, or due to applying excessive mechanical
force, etc. So,
Megging the insulation is intended to
check for any of these imperfections.
When the voltage is applied across two conductors that are
supposed to be insulated, the megohmmeter measures the
current that flows. If the current is lesss than the
specified amount, then the insulation is meeting the
specified minimum. If it fails the test, then there is a
problem such as I mentioned above.
Is This Answer Correct ? | 8 Yes | 4 No |
Answer / er.s.ramkumar
Ensure the insulation throughout the cable is good or
not.during the hv test measured leakage current in the
cable is allowable means insulation also good.
Is This Answer Correct ? | 4 Yes | 1 No |
In motors how many types of cooling systems were used?
is it possible to step down voltage of single phase from a three phase sysem? explain
why the perameters of secondary circuit are more important then that of the primary circuit of induction motor?
What are all present producing cost of Per KWH of various Fuel?
1.What is the difference between isolators and circuitbreakers? 2.What is bus-bar?
what is elcb
How to find synchronous motor speed formula Ns=120f/P ?....
what is electricity
what is mean by descripiency relay? & wht is its ansi code?
What is the difference between earthed & unearthed system?
Why we are using Ohm's law? where it is applicable? explain.
10 Answers Pyramid Saimira, TCS,
WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >