People's Megohmmeter Insulation Resistance Tester Electrician Resistance Meter ZC-7 1000V/1000MΩ

High-voltage hand-crank generator.

Magnetic double-coil galvanometer.

L and E terminals for test connections.

Grounding terminal (G).

Calibrated dial scale.

1. Place the instrument horizontally.

2. Connect the device under test to L and E terminals.

3. For line insulation testing, connect L to the line and E to ground.

4. For two-wire insulation testing, connect L and E to each wire respectively.

5. For cable insulation testing, connect L to the core wire, E to the outer layer, and G to the inner layer to avoid surface leakage errors.

6. Rotate the crank at approximately 120 turns per minute.

7. Observe the pointer movement; normal insulation resistance is indicated by stable readings.

Rubber base feet prevent slipping and protect against impact.

Robust construction with high-temperature and impact-resistant materials.

Designed for reliable and accurate insulation resistance measurement in various electrical maintenance and testing environments.