Megger
Description
A Megger is an electrical testing instrument used to measure insulation resistance in electrical equipment and wiring. It helps in detecting leakage current and ensures the safety and reliability of electrical systems. Meggers are commonly used in maintenance, installation, and testing of cables, motors, transformers, and other electrical devices.
Parts
- Display: Shows insulation resistance values.
- Hand Crank or Battery: Generates testing voltage.
- Selector Switch: Used to select voltage range.
- Test Leads (Probes): Connect the instrument to the circuit.
- Terminals: Points for connecting leads (Line, Earth, Guard).
Material
- Plastic Insulated Body
- Copper Conductors (leads)
- Electronic Components
Uses
- Measuring insulation resistance of cables and wires
- Testing motors, transformers, and generators
- Detecting leakage currents
- Ensuring electrical safety and reliability
Safety
- Ensure the circuit is de-energized before testing.
- Do not touch test leads during operation.
- Use proper voltage range settings.
- Discharge the circuit after testing to avoid electric shock.
- Wear insulated gloves and safety equipment.