The Megohmmeter, or
Megger, is a measuring device that tests high electrical resistances. Typically
these measurements are made on electrical wires and motor windings to test the
insulation value of the wires. In order to read such a high resistance value the
meter must be capable of generating a very high voltage.
Important
specifications for megohmmeters include DC output voltage, DC output current,
current leakage rate, resistance range, and test time. The type of electrical
safety test determines the level of voltage or current that is supplied. For
example, hipot testing usually produces very high voltage outputs and very low
current outputs. Current leakage, another important specification for
megohmmeter, is the rate at which current flows through a ground conductor and
is borne away safely. Resistance range measures a material’s opposition to the
flow of electric current. Test time is the time required to complete the
test.
If you need assistance selecting or configuring a
megohmmeter for your insulation/ resistance measurement application please
contact us at toll free 1.866.363.6634 or email us at sales@calright.com.
