UNI-T UT503PV PV Insulation tester

Output voltage Insulation resistance   PV insulation resistance             Accuracy

125V                                    <1.51MΩ                                        N/A                 For reference only

                                             1.51MΩ~100.0MΩ                                                           ±(1.5%+5)

                                             100.1MΩ~1000MΩ                                                         ±(5%+6)

  250V                                    <1.51MΩ                                      N/A                 For reference only

                                              1.51MΩ~200.0MΩ                                                         ±(1.5%+5)

                                             200.1MΩ~2000MΩ                                                        ±(5%+6)

  500V                                     <1.51MΩ                                <1.51MΩ            For reference only

                                               1.51MΩ~1000MΩ           1.51MΩ~1000MΩ          ±(1.5%+5)

                                              1001MΩ~4000MΩ           1001MΩ~4000MΩ         ±(5%+6)

1000V                                  <1.51MΩ                                    <1.51MΩ          For reference only

                                                1.51MΩ~1000MΩ          1.51MΩ~1000MΩ          ±(1.5%+5)

                                               1001MΩ~4000MΩ          1001MΩ~4000MΩ         ±(5%+6)

Voltage 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      

Continue measurement(IR)      √(default setting)           Compare function(IR)   √

Time measurement                                     √                              Stepping voltage             √

Auto discharge                                                 √                              High voltage alarm     √

DUT live test     IR measurement: DO NOT test if the DUT voltage is above 25V

                               PV IR measurement: the DUT voltage should under DC 1000V

Backlight            Auto & Manual backlight; auto power off in 30s

Data storage     1000 set

Data Communication  transmission via USB cable

                                   transmission via Bluetooth app

IP            IP54(with cap closed)

CAT rating          CAT II 1000V, CAT III 600V

Certificates       CE, UKCA