The UNI-T UT503PV is a specialized photovoltaic insulation tester designed for professionals who demand reliable and accurate testing capabilities in solar energy installations. This advanced instrument allows for live insulation resistance measurement of photovoltaic systems without requiring power outage or short-circuiting of solar panels—even testing at night with maximum DC 1000V capability. Featuring superior accuracy, comprehensive testing options, and modern connectivity through Bluetooth and USB-C, the UT503PV stands above market alternatives with its broader feature set and competitive pricing, making it the ideal choice for solar installation professionals, maintenance technicians, and electrical engineers working with renewable energy systems.
The UT503PV combines standard insulation resistance functionality with specialized PV capabilities, automatic voltage recognition, and smart safety features that protect both equipment and operators in high-voltage environments. With an IP54-rated rugged construction and intuitive interface, this tester delivers consistent performance in challenging field conditions while maintaining industry-leading accuracy across its measurement range.
UNI-T UT503PV Solar Pro PV Insulation Tester 1kV PhotoVoltaic Tester
Order Information
Please allow 2 - 3 weeks lead time for new product to arrive. Comes with 3 Year Manufacturer's Warrany.
Features
Key Features
- Live PV Insulation Testing - Measure photovoltaic insulation resistance up to DC 1000V without system shutdown
- Multi-Voltage Testing Range - Supports comprehensive testing at 125V, 250V, 500V, and 1000V output voltages
- High Measurement Accuracy - ±1.5% accuracy for insulation resistance values from 1.51MΩ to 1000MΩ
- Dual Connectivity Options - Bluetooth app support and USB Type-C data transmission
- Automatic Discharge - Fast, automatic discharge after measurement for enhanced safety
- Extensive Data Storage - Save up to 1000 test results for documentation and analysis
- High Voltage Live Warning - Built-in alarm system for operator safety in high-voltage environments
- Comparative Function - Quick pass/fail testing with user-defined thresholds
- Remote Control Test Probe - Operate testing functions from the probe for one-handed convenience
- Stepping Voltage Capability - Progressive voltage testing for detailed insulation analysis
- Extensive Measurement Range - Test insulation resistance up to 4000MΩ at 500V and 1000V
- Industrial Protection Rating - IP54 water and dust resistance (with cap closed)
Specifications
Parameter Specification Insulation Resistance Measurement 125V Output 1.51MΩ~100.0MΩ (±1.5%+5)
100.1MΩ~1000MΩ (±5%+6)
<1.51MΩ For reference only250V Output 1.51MΩ~200.0MΩ (±1.5%+5)
200.1MΩ~2000MΩ (±5%+6)
<1.51MΩ For reference only500V Output (IR) 1.51MΩ~1000MΩ (±1.5%+5)
1001MΩ~4000MΩ (±5%+6)
<1.51MΩ For reference only500V Output (PV IR) 1.51MΩ~1000MΩ (±1.5%+5)
1001MΩ~4000MΩ (±5%+6)
<1.51MΩ For reference only1000V Output (IR) 1.51MΩ~1000MΩ (±1.5%+5)
1001MΩ~4000MΩ (±5%+6)
<1.51MΩ For reference only1000V Output (PV IR) 1.51MΩ~1000MΩ (±1.5%+5)
1001MΩ~4000MΩ (±5%+6)
<1.51MΩ For reference onlyVoltage Measurement DC Voltage 5~1000V DC (±1%+4) AC Voltage 5~600V AC (±1%+4) Short Circuit Current IR Measurement <1.5mA PV IR Measurement <1.2mA Features Continue Measurement (IR) Yes (default setting) Time Measurement Yes Auto Discharge Yes Compare Function (IR) Yes Remote Control Test Probe Yes Analog Bar Yes Auto Range Yes Stepping Voltage Yes High Voltage Alarm Yes DUT Live Test IR measurement: <25V
PV IR measurement: <1000VBacklight Auto & Manual backlight Auto Power Off Yes Data Storage 1000 set Data Communication USB (Type C)
Bluetooth appIP Rating IP54 (with cap closed) CAT Rating CAT II 1000V, CAT III 600V Certificates CE Physical Specifications Dimensions 161(L) x 117.3(D) x 63(H)mm Weight Approximately 0.5kg (including battery) Power Source Lithium battery
