Professional UNI‑T UT501A insulation resistance tester for precise insulation testing in industrial and residential installations. Offers insulation resistance measurement up to gigaohms, AC voltage, low resistance, and calculations of PI and DAR. A large 2000‑count backlit LCD, automatic discharge, visual and audible indicators, and auto power‑off enhance safety and ease of use. CE and UKCA certifications confirm quality and compliance with standards.
The UNI‑T UT501A is a reliable tester for fast and safe verification of insulation quality in cables, motors, transformers, and switchboards. Thanks to multiple test voltages (100–1000 V) and PI/DAR functions, it enables a detailed assessment of insulation condition even in demanding applications. Its robust design, backlit display, and automatic features simplify field work.
Key benefits:
- Wide measurement ranges for insulation, low resistance, and AC voltage.
- Safety and convenience thanks to automatic discharge, overload indication, and alarms (visual and audible).
- Accuracy and readability – 2000‑count backlit LCD with clear indicators.
- Efficient diagnostics – automatic PI and DAR calculations and the option for continuous measurement.
The package includes everything needed for immediate use: test leads, alligator clips, batteries, and a manual.
Specifications
- Manufacturer
- UNI‑T
- Model
- UT501A
- Display count
- 2000
- DAR measurement
- Supported (60 s / 15 s and 60 s / 30 s)
- PI measurement
- Supported
- Auto range
- Supported
- Low battery indicator
- Supported
- LCD backlight
- Built‑in
- Visual alarm
- Built‑in
- Audible alarm
- Built‑in
- High‑voltage indication
- Built‑in
- Overload indicator
- Built‑in
- Automatic discharge
- Built‑in
- Secondary test voltage indicator
- Built‑in
- 10 MΩ internal resistance test
- Supported
- Standards complied
- CE, UKCA; IEC 61557 (61557‑1:2007; 61557‑2:2007; 61557‑4:2007 – UT502A only)
- Power supply
- 6 × 1.5 V batteries (LR6)
- Display
- 70.6 × 34 mm
- Color
- red, gray
- Weight
- 500 g
- Dimensions
- 150 × 100 × 71 mm
- Test voltages
- 100 V / 250 V / 500 V / 1000 V
- Insulation resistance measurement
- 100 V: 0 MΩ – 100 MΩ (±(3% + 5)); 250 V: 0 MΩ – 99.9 MΩ (±(3% + 5)), 100 MΩ – 5 GΩ (±(5% + 5)); 500 V: 0 MΩ – 99.9 MΩ (±(3% + 5)), 100 MΩ – 5 GΩ (±(5% + 5)); 1000 V: 0 MΩ – 99.9 MΩ (±(3% + 5)), 100 MΩ – 5 GΩ (±(5% + 5))
- Load current
- 100 V (100 kΩ) 1 mA (0–10%); 250 V (250 kΩ) 1 mA (0–10%); 500 V (500 kΩ) 1 mA (0–10%); 1000 V (1 MΩ) 1 mA (0–10%)
- Short‑circuit current
- < 2 mA
- Low resistance measurement
- 0.01 Ω – 200 Ω (approx. 5.0 V, > 200 mA)
- AC voltage measurement
- 30 V – 750 V (±(2% + 3))
- Package contents
- insulation resistance tester, batteries, test leads, alligator clips, manual
