UNI-T UT502A Megger Insulation Resistance Tester 2500V
The UNI-T UT502A presents a durable and dependable persona from the first glance. Encased in a sturdy housing capable of enduring demanding environments, it’s built to function smoothly outdoors and onsite. The sizable backlit display ensures readings remain easily visible even in low-light scenarios, while intuitive controls and a clear rotary dial keep navigation straightforward under pressure.
Capable of delivering test voltages up to 2500 V and measuring insulation resistance across an impressive range (up to 20 GΩ), the UT502A empowers technicians to handle high-voltage insulation diagnostics with assurance. It provides essential assessment tools such as Polarization Index and Dielectric Absorption Ratio testing, giving a complete perspective on insulation health. Automatic discharge and real-time high-voltage warnings boost both safety and workflow.
This tester effortlessly merges precision with efficiency. Auto-ranging simplifies configuration, while audible and visual alerts like buzzer alarms and warning lights help catch anomalies early. Its continuity mode, overload indicators, and return-to-zero functionality for low-resistance tests further enhance accuracy and ease of use. Altogether, the UT502A balances advanced diagnostics with intuitive operation in a professional-grade package.
Features:
- Backlit 2000-count LCD display with overload indication.
- Auto discharge function for safety after testing.
- Continuous low-resistance measurement with return-to-zero capability.
- Integrated PI (Polarization Index) and DAR (Dielectric Absorption Ratio) diagnostics.
- Auto-ranging and low battery indicator for seamless use.
- Audible buzzer and red warning light for high-voltage alerts.
- Auto power-off to preserve battery life.
Specifications:
| Specifications | Range | UT502A | |
| Insulation resistance (Ω) | Test voltages | 500V/1000V/2500V | 0%~10% |
| 500V | 0MΩ~99.9MΩ | ±(3%+5) | |
| 100MΩ~5GΩ | ±(5%+5) | ||
| 1000V | 0MΩ~99.9MΩ | ±(3%+5) | |
| 100MΩ~5GΩ | ±(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% | |
| 100V (R=100kΩ) 1mA | 0%~10% | ||
| 250V (R=250kΩ) 1mA | 0%~10% | ||
| 500V (R=500kΩ) 1mA | 0%~10% | ||
| 1000V (R=1MΩ) 1mA | 0%~10% | ||
| 2500V (R=1MΩ) 1mA | 0%~10% | ||
| Short-circuit current | <2mA | ||
| Low resistance (Ω) | 0.01Ω~200Ω (about 5.0V/>200mA） | ±(2%+3) | |
| AC voltage (V) | 30V~600V | ±(2%+3) | |
| Features | |||
| Display count | 2000 | ||
| DAR | 60s/15s and 60s/30s | √ | |
| PI | √ | ||
| Auto range/Low battery indication | √ | ||
| LCD backlight/Light alarm | √ | ||
| Buzzer alarm/High voltage indication | √ | ||
| Over load indication/Auto discharge | √ | ||
| Test voltage secondary display | √ | ||
| 10MΩ internal resistance test | √ | ||
| Meets IEC 61557 | 61557-1:2007; 61557-2:2007; 61557-4:2007 (UT502A only) | ||
| General Characteristics | |||
| Power | 1.5V battery (LR6) x 6 | ||
| Display | 70.6mm x 34mm | ||
| Product color | Red and grey | ||
| Product net weight | 500g | ||
| Product size | 150mm x 100mm x 71mm | ||
Applications:
- Testing insulation on transformers.
- Evaluating insulation of generators and high-voltage motors.
- Verifying cable and capacitor insulation integrity.
- Inspecting insulation in arresters and industrial switchgear.
Package Contents:
- 1x UT502A Insulation Resistance Tester
- 2x Test Leads
- 2x Alligator Clips
- 2x Test Probes
- 1x User Manual
- 1x Carrying Bag
- 1x Strap (wrist or carrying strap)
- Batteries not included in package
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