Digital Insulation Resistance Tester
A Digital Insulation Resistance Tester is an electrical testing instrument used to measure the insulation resistance of electrical equipment, cables, transformers, motors, and wiring systems. It applies a high DC voltage (typically 250V, 500V, 1000V, or higher depending on the model) across the insulation and measures the resistance in megaohms (MΩ). This helps in assessing insulation quality, detecting leakage currents, and ensuring safety and reliability of electrical installations. It is widely used in maintenance, troubleshooting, and quality inspections in electrical and industrial applications.
- Digital Display – Provides clear and accurate resistance readings in MΩ/GΩ with high resolution.
- Multiple Test Voltages – Selectable test ranges (commonly 250V, 500V, 1000V, and sometimes up to 5kV or 10kV).
- Wide Measurement Range – Can measure insulation resistance from a few kilohms (kΩ) to several gigaohms (GΩ).
- Auto/Manual Ranging – Automatic or selectable ranges for convenient operation.
- Safety Protection – Over-voltage protection and automatic discharge of test voltage after measurement.
- Data Hold / Memory – Stores measured values for later reference.
- Low Battery Indication – Alerts user when battery power is low.
- Portable & Compact Design – Lightweight, rugged body suitable for field and laboratory use.
- Additional Functions (in some models):
1. Polarization Index (PI) and Dielectric Abso
2. Timer function for long-term insulation testing.
3. Backlit display for low-light environments.
