Insulation Resistance

Yes, in most digital IR testers, there is a display of the actual dc voltage being applied on the equipment under test. But again, that depends on the make of the instrument.

Another one of those gentle nudges, steering someone closer to the center of the path to clearer thinking. Nicely done!

I do hope the OP pays particular attention to your comment and comes away with much more than the answer to this particular question.

[edit] <sigh>

Sir, for all I know about megger is that it display only reading in megaohms, is there a new model of megger that simultaneously display reading in megaohms and the actual voltage applied?

regards

{Sigh}

MEGGER 510/2

The instrument has a large easy to read backlit LCD display making it equally suitable for use in both bright sunlight and poorly lit environments. Information displayed includes resistance, voltage, leakage current, capacitance, battery status and time constant. In addition, the elapsed time of the test is displayed constantly removing the need for separate timers.

Redfred, doorman....

You can take a horse to the water, you can't make it drink

Are you trained to use a 5000V Megger?

If not leave it alone before you hurt yourself! The applied voltage is displayed at the bottom of the screen, you have to read it in conjunction with the main read out. Some tests require 10 minutes or more for the test voltage to build up and as much time to discharge.

A 5000V Megger can be lethal if you don't know what your doing with them!

your you're

Thank you sirs, for the information before we r using analog megger I was not aware that there is a display of applied voltage,leakage current etc.

The test voltage will be on the Calibration Test Certificate accompanying the device. There is a Calibration Test Certificate accompanying the device, isn't there?

If not, then what confidence is there to be gained in using this particular device to carry out the test <rhetorical question>? Lack of a Calibration Test Certificate would invalidate the test records raised as a result of using it!