how to calculate the megger values for motors and cables?

Answer Posted / pradyumna171

megger value of any appleance should be 2 multiply with working voltage in kv plus 1 ie a 440 volt motor should have 1.88Mohm (2* .440 +1) , it is the minimum value. And megger voltage should be twice of working voltage of appleance.

Is This Answer Correct ?    2 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

we use capister for power factor. when we use capaciter in dg circuit  than defect dg. can we use capaciter bank for dg circuit

1429


i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

1628


I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

1742


how to find the voltage's of a transmission line plzz help with pictures i am not able to understand

790


why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

1533






List the power rating of any 5 important electrical appliances used in houses.

1573


How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

1723


Why does the Solid state Rectifiers for 3-ph brake motors sometimes have 2 & sometimes 3 output terminals?

1607


regarding safety what would u consider the most important rules to observe when inspecting electrical equipment?

1578


Different types of relay fault which phase sequence??

474


what parameters should we check to reduce the power bill

1840


I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

2059


Why the frequency of ac in india is 50 hz but in some other countries it is 60 hz.

1692


how we decide the require size is this for a known current at fuu load?

1432


how can i get an electrical c-certificate?

1799