Catalog > Test and Measurement > Test and Measurement Instruments > UNI-T Instruments Catalog > Test and Measurement > Test and Measurement Instruments > Special Function Testers > Miscellaneous Testers PV Installation Tester Tester UNI-T UT503PV PV Installation Tester 1000VDC 600VAC, Data Storage:1000 Set, Short Circuit Current IR Measurement:<1.5mA, PV IR Measurement:<1.2mA, Insulation Resistance (PV+IR) 4000MΩ, CATII 1000V, CATIII 600V, 161x117.3x63mm, IP54 8,527.20 ZAR inc for 1 Each 2 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview The UT503PV is built for solar work: it measures insulation resistance on live photovoltaic systems at up to DC 1000 V, so a string can be tested without taking the array offline or short-circuiting panels — including after dark. It tests to IEC 62446 with test voltages from 125 V to 1000 V and a measurement range up to 4000 MΩ, and it's rated CAT II 1000 V / CAT III 600 V with an IP54 sealed body for outdoor use. Stepped-voltage testing, a comparison function, automatic discharge, and a high-voltage alarm cover the safety and diagnostic basics, while 1000 result sets store on-board and transfer over USB or a Bluetooth app for commissioning reports. It's backed by UNI-T's nearly 40 years of test-meter manufacturing. Features Live PV insulation testing up to DC 1000 V — no array shutdown required Test voltages: 125 V, 250 V, 500 V, 1000 V (IEC 62446) Insulation resistance up to 4000 MΩ, accuracy ±(1.5%+5) Stepped-voltage testing and comparison function Automatic discharge and high-voltage alarm 1000-set storage; USB and Bluetooth app CAT II 1000 V / CAT III 600 V; IP54 sealed body Compact ~0.5 kg handheld for rooftop and field work Specifications Test Voltages 125 V / 250 V / 500 V / 1000 V Insulation Resistance up to 4000 MΩ IR Accuracy ±(1.5% + 5) PV Insulation Resistance (live) up to 4000 MΩ, ≤ DC 1000 V DC Voltage 5 to 1000 V, ±(1% + 4) AC Voltage 5 to 600 V, ±(1% + 4) Short-Circuit Current < 1.5 mA (IR) / < 1.2 mA (PV IR) Stepping Voltage Yes Auto Discharge Yes Compare Function Yes High Voltage Alarm Yes Data Storage 1000 sets Data Communication USB + Bluetooth app Safety Rating CAT II 1000 V, CAT III 600 V IP Rating IP54 (cap closed) Dimensions (L × D × H) 161 × 117.3 × 63 mm Weight ≈0.5 kg Certifications CE Country of Origin China Downloads Datasheet - UNI-T UT503PV PDF File 17.29 MB