UNI-T UT511 Insulation Resistance Tester
The UNI-T UT511 is a handheld insulation resistance tester built around a microprocessor system and intuitive readout design. It integrates a high-resolution LCD (9999-count) with an analog bar graph typically 30 segments to deliver clear, precise measurements in a range of testing environments.
Supporting test voltages of up to 1 kV DC (and 750 V AC), the UT511 tackles a wide range of measurement scenarios. It covers insulation resistance from low megaohm values up to around 10 GΩ, making it versatile for assessing cable or equipment integrity.
Constructed with a rugged body, this device includes essential safety certification (such as CAT III 600 V / CAT II 1000 V) to support field reliability. Powered by eight LR14 batteries, it remains compact and portable—ideal for routine diagnostics across industrial, residential, and commercial settings.
Features:
- Large 9999 display with 30-segment analog bar graph.
- PI/DAR measurements.
- Comparison, upper and lower limit functions.
- Continuous measurement mode.
- Auto power off.
- 18-group data storage.
- Backlight.
- Auto current discharge and high-voltage output alarm.
- Time measurement mode, auto measure within 15 minutes.
- Low battery and over range indications.
Specifications:
| Specifications | Range | UT511 | |
| Insulation resistance (Ω) | Test voltages | 100V~1000V | 0%~10% |
| 100V | 0.1MΩ~500MΩ | ±(3%+5) | |
| 250V | 0.5MΩ~2GΩ | ±(3%+5) | |
| 500V | 1MΩ~4GΩ | ±(3%+5) | |
| 1000V | 2MΩ~10GΩ | ±(3%+5) | |
| DC voltage (V) | 1000V | ±(2%+3) | |
| AC voltage (V) | 750V | ±(2%+3) | |
| Short-circuit current | <2mA | ||
| Low resistance (Ω) | 0.1Ω~999.9Ω | ±(1%+3) | |
| Features | |||
| Auto range/Auto power off | √ | ||
| Low battery indication | √ | ||
| Data storage | 18 | ||
| Comparison measurement | √ | ||
| Polarization index (PI) | √ | ||
| Dielectric absorption ratio (DAR) | √ | ||
| Analog bar graph | 30 | ||
| LCD backlight | √ | ||
| Over-range warning | √ | ||
| High voltage indication | √ | ||
| Timing measurement | Around 30 minutes | √ | |
| General Characteristics | |||
| Power | 1.5V battery (LR14) x 8 | ||
| Display | 123mm x 58mm | ||
| Product color | Red and grey | ||
| Product net weight | 1.2kg | ||
| Product size | 202mm x 155mm x 94mm | ||
Applications:
- Electrical Installation and Wiring Verification.
- Preventive Maintenance of Electrical Equipment.
- High-Voltage Motor and Generator Winding Testing.
- Power Cable Insulation Integrity Testing.
- Transformer Insulation Condition Assessment.
- Switchgear and Circuit Breaker Testing.
Package Contents:
-
1x English operating manual
-
1x One-plug test lead to one alligator clip (pair)
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1x Two-plug test lead to one alligator clip
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8x LR14 (R14) 1.5 V batteries
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1x Tool box (carrying case)
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