<Table> <Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article does not cite any sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2016) (Learn how and when to remove this template message) </Td> </Tr> <P> Megohmmeter or megger is a special type of ohmmeter used to measure the electrical resistance of insulators . Insulating components, for example cable jackets, must be tested for their insulation strength at the time of commissioning and as part of maintenance of high voltage electrical equipment and installations . For this purpose megohmmeters, which can provide high DC voltages (typically in ranges from 500 V to 5 kV, some are up to 15 kV) at specified current capacity, are used . Acceptable insulator resistance values are typically 1 to 10 megohms, depending on the standards referenced . </P> <P> Resistance to be measured is connected across the terminals i.e. connected in series with the deflecting coil and across the generator . When the current is supplied to the coils then they have torque in opposite directions . </P>

A megohmmeter can produce voltages that range from 250 v to ____ v
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