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 |
how to reduce the power consumption in office ?
Explain using drawings what is reverse PID action w.r.t PID controllers.
whata is battery charger ?how many cells connected for 110v?
If 24 KVA AVR having Input voltage 200-400v, Output voltage 415+-1%, what will be the voltage if Load is 13A.
Why the voltage n frequency of the incoming generator is kept slightly higher than d grid voltage n frequency while synchronization ?
how to calculate the megger values for motor, cables and transformers?
A 4-Pole D.C. Generator has a speed of 1500r.p.m. Then what will be the frequency of D.C. Generator ?
When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?
please send me previose rrb junior engineer qustion papers
What is working of Trip Ckt.Supervision Relay?
HOW TO CALCULATE SINGLE PHASE AMPERES IN 3 PHASE TRANSFORMER? GIVE AN EXAMPLE PLZZZ
Why the substation measure in KV but not in the power ratings of transformer.