Why voltage is not increasing more than 2K in Megger MIT1525 Insulation tester?

[krupasagar]

Hi Sir, I'm having a Megger MIT 1525 15KV insulation tester. During testing test voltage is not increasing more than 2KV. these is no physical damaged to the equipment. what could be the reason? pls advise.
thank you...

 

[Julie.]

Is it connected to the test piece?

If so, when there is a low impedance it will limit the voltage as to deliver more would result in a large current, as it is limited typically to 6mA

So 2kV 6mA would be circ 0.3 Mohm

If it isn't connected to anything and still not producing voltage (and you have the right settings etc) then it's faulty.

Edit: forgot to say, does it beep when you start the test (ie burn mode rather than discharge mode)?