Available
The UT501A insulation tester from UNI-T is a professional tool designed for insulation resistance testing on a wide range of electrical equipment, including motors, power cables, transformers, and switchgear. With its compact design, ease of use, and reliable performance, it is ideal for electrical maintenance technicians and engineers.
This model supports selectable test voltages of 100 V, 250 V, 500 V, and 1000 V, allowing precise measurement of insulation resistance up to 5 GΩ. It also includes AC voltage measurement up to 750 V and a high voltage warning for user safety.
The UT501A features a 2000-count backlit LCD screen, data hold, auto power-off, and automatic discharge of the tested circuit. It is a robust solution for both field and lab-based electrical diagnostics.
| Model | UT501A |
| Test voltages | 100 V / 250 V / 500 V / 1000 V |
| Insulation resistance range | 0 Ω – 5 GΩ |
| Resistance accuracy | ±(3% + 5 digits) up to 100 MΩ; ±(5% + 5 digits) above 100 MΩ |
| AC voltage measurement | 30 V – 750 V AC ±(2% + 3) |
| Resolution | 0.01 MΩ |
| Test current | ≥1 mA |
| Display | 2000-count LCD with backlight |
| Additional functions | Data hold, auto discharge, auto power-off |
| Power supply | 6 × 1.5 V AA batteries (LR6) |
| Dimensions | 150 × 100 × 71 mm |
| Weight | Approx. 500 g |
| Certifications | CE, UKCA |
| Included accessories | Test leads, crocodile clips, carrying pouch, user manual |
