Megger now offers a palm-sized, battery-operated proving unit that provides a substitute voltage source for testing a two-pole tester.  The MPU690 helps to ensure that a voltage tester is capable of detecting voltage safely and efficiently. The compact, portable device is ideal for use where a live voltage testing source is not available or where maneuverability is limited, such as being up on a ladder or in a tight, confined space. For simplified operation, the proving unit automatically turns on when voltage test prods are inserted into the unit’s output terminals.

The MPU690:

  • Generates stepped voltages beginning at 690 V and slowly ramps down until the device shuts off, giving an indication that the two pole voltage tester can indicate voltages at different levels correctly. 
  • Includes LED lights to indicate individual voltage steps as well as a power display.
  • Generates AC frequency output voltage when in use, simulating the AC power supply.  This high output power is ideal for use with test lamp testers that utilize a small bulb to indicate the presence of voltage.
  • Operating temperature range of -10ºC to +40ºC.
  • Measures 130 x 68 x 49 mm.
  • Extended battery life–running on six AA LRO6 alkaline batteries.
  • Features a magnetic base and a rugged case.

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