Megger Proving Units
Discover the top Megger proving units for reliable electrical testing. Learn which tools meet your needs and enhance your testing efficiency. Read more!
Find out more about Megger Proving Units below.
- 5 stepped nominal output voltages
- Automatic operation
- High output power suitable for test lamps
About Megger Proving Units
Megger proving units are critical safety devices used to verify the functionality of voltage testers, multimeters, and other electrical testing instruments before and after use. These compact and portable proving units generate a known voltage, allowing electricians and engineers to confirm that their testing equipment is functioning correctly, reducing the risk of inaccurate readings and ensuring compliance with safety regulations.
How Do They Work?
- Voltage Generation: The proving unit generates a series of stepped voltages, which are applied to the voltage tester being tested. For example, the Megger MPU690 generates voltages from 50V to 690V in steps.
- Verification Process: The voltage tester is connected to the proving unit, and its readings are compared against the known output voltages. If the tester's readings match the proving unit's output, the tester is confirmed to be accurate.
Key Features of Megger Proving Units
- Portability: Lightweight and easy to carry, making them suitable for fieldwork.
- Stepped Voltage Output: Generates multiple voltage levels for comprehensive testing.
- Battery Operation: Many units, like the Megger MPU690, are battery-powered, enhancing their usability in remote locations.
- Safety Indicators: Features like low battery warnings and automatic power-off ensure safe and efficient operation.
Applications
Megger Proving Units are essential tools for professionals who rely on voltage testers, particularly in:
- Electrical Maintenance: Proving units are used to verify that circuits are de-energised before maintenance or repair work. This is critical for ensuring the safety of electricians and engineers.
- Calibration: They are used to calibrate voltage testers, ensuring these devices meet electrical performance standards.
- Field Testing: Due to their portability, proving units are ideal for use in challenging environments, such as up in towers or junction boxes, where accurate voltage testing is essential.
Organisations like the HSE (Health and Safety Executive) recommend using proving units in conjunction with voltage indicators to minimise human error and ensure the safe isolation of circuits.
