Megger MPU690-PROVING UNIT Key Features :

  • 5 stepped nominal output voltages
  • Automatic operation
  • High output power suitable for test lamps
  • Extended battery life
  • Magnetic base
  • Rugged case
(1 customer review)
SKU: 3458

MME Shopping Event

Hurry and get discounts on Most of MME Products up to 20%

Call for Price

18 People watching this product now!


The Megger MPU690 Proving Unit is a high-performance, portable battery-operated voltage source designed to ensure the safe and effective verification of two-pole voltage detectors. This essential tool is specifically engineered to confirm the operational integrity of voltage detectors used across a variety of electrical applications, making it a must-have for professionals in the electrical and maintenance sectors.

Key Features of the Megger MPU690 Proving Unit:

Versatile Voltage Range: The MPU690 can generate voltages from 50 to 690 V across five steps, providing a comprehensive range that covers the majority of industrial and commercial electrical systems. This feature ensures that technicians can validate the performance of their voltage detectors against a spectrum of voltages encountered in the field.

Intelligent Voltage Step-Down: Upon activation, the MPU690 initially outputs the maximum voltage of 690 V. It then automatically ramps down through the voltage steps in a controlled manner until it switches off. This sequential step-down process allows users to check the responsiveness of their equipment at each voltage level.

Visual Indicators: The unit is equipped with LEDs that indicate each voltage step, power status, and battery level. These indicators provide clear and immediate feedback to the user, enhancing the usability and safety of the unit.

Simulated AC Mains Output: When voltage tester probes are inserted into the output terminals, the MPU690 automatically powers on and generates a 50 Hz output voltage. This feature simulates an AC mains supply, allowing users to test voltage detectors under realistic conditions that mimic those found in actual electrical installations.

Efficient and Durable Design: Despite its high output capabilities, the MPU690 boasts an exceptionally long battery life, reducing the need for frequent battery changes and ensuring reliability in the field. The unit’s rugged case, complete with a magnetic base, allows for convenient setup and use on various metal surfaces, making it ideal for hands-free operation.

Optimized for Professional Use: The spacing of the output terminals is specifically designed to accommodate voltage indicators that utilize a lamp for operation, broadening the range of devices that can be tested with the MPU690. This makes it a versatile tool suited for a wide array of testing scenarios.

Megger MPU690-PROVING UNIT Specifications:

  • Display Type:LED
  • Height: 130 millimeters
  • Item Weight: 13.6 ounces
  • Model Number:1001-561
  • Power Source Type : Battery Powered
  • Temperature Range: -10/40 degrees_celsius
  • Width: 68 millimeters
1 review

1 review for Megger MPU690-PROVING UNIT

Clear filters
  1. Gabriel

    Perfect thanks

Add a review




Megger since 1889 is a leading global premium manufacturer of measurement and testing technology. Megger top priority has always been to make your everyday work easier and safer. As such, insulation testers, micro-ohmmeters, and multimeters are among the long line of Megger inventions, making this brand one of the pioneers in the electrical industry. Megger products combine many years of experience and the valued feedback from our global users with the inventiveness and conscientiousness of our product developers. In Germany, we manufacture at three sites, Aachen, and Baunach near Bamberg and Radeburg near Dresden. Other manufacturing locations are based in Sweden, England, and America.


Data Sheet

Data Sheet


Specification Value
Display Type LED
Height 130 millimeters
Item Weight 13.6 ounces
Model Number 1001-561
Power Source Type Battery Powered
Temperature Range -10/40 degrees Celsius
Width 68 millimeters