- Certifications: CE, UKCA
- 2000-count LCD, overload indication, backlight
- AC voltage measurement, auto power off
- Auto discharge
- Continuous low resistance measurement
- Continuous measurements mode, red warning light, and buzzer function
- PI and DAR measurement, auto resistivity calculation
- Low resistance returning to zero function to improve accuracy
Specifications of UT501A Insulation Resistance Testers
| Specifications | Range | UT501A | UT501B | UT502A | |
| Insulation resistance (Ω) | Test voltages | 100V/250V/500V/1000V | 0%~10% | ||
| 250V/500V/1000V | 0%~10% | ||||
| 500V/1000V/2500V | 0%~10% | ||||
| 100V | 0MΩ~100MΩ | ±(3%+5) | |||
| 250V | 0MΩ~99.9MΩ | ±(3%+5) | ±(3%+5) | ||
| 100MΩ~5GΩ | ±(5%+5) | ±(5%+5) | |||
| 500V | 0MΩ~99.9MΩ | ±(3%+5) | ±(3%+5) | ±(3%+5) | |
| 100MΩ~5GΩ | ±(5%+5) | ±(5%+5) | ±(5%+5) | ||
| 1000V | 0MΩ~99.9MΩ | ±(3%+5) | ±(3%+5) | ±(3%+5) | |
| 100MΩ~5GΩ | ±(5%+5) | ±(5%+5) | ±(5%+5) | ||
| 2500V | 0MΩ~99.9MΩ | ±(3%+5) | |||
| 100MΩ~9.9GΩ | ±(5%+5) | ||||
| 10GΩ~20GΩ | ±(10%+5) | ||||
| Load current | 50V (R=50kΩ) 1mA | 0%~10% | 0%~10% | 0%~10% | |
| 100V (R=100kΩ) 1mA | 0%~10% | 0%~10% | 0%~10% | ||
| 250V (R=250kΩ) 1mA | 0%~10% | 0%~10% | 0%~10% | ||
| 500V (R=500kΩ) 1mA | 0%~10% | 0%~10% | 0%~10% | ||
| 1000V (R=1MΩ) 1mA | 0%~10% | 0%~10% | 0%~10% | ||
| 2500V (R=1MΩ) 1mA | 0%~10% | ||||
| Short-circuit current | <2mA | <2mA | <2mA | ||
| Low resistance (Ω) | 0.01Ω~200Ω (about 5.0V/>200mA） | ±(2%+3) | ±(2%+3) | ||
| AC voltage (V) | 30V~750V | ±(2%+3) | |||
| 30V~600V | ±(2%+3) | ±(2%+3) | |||
![UNI-T UT513A Insulation Resistance Tester [Megger]](https://www.linelifebd.com/public/images/product-333401111150324.webp)
