UNI-T UT503PV PV INSULATION TESTER

UNI-T UT503PV PV Insulation Tester

The UNI-T UT503PV PV Insulation Tester is a professional-grade tool designed for solar technicians, electricians, and field professionals who require precise and safe testing of photovoltaic (PV) systems. With a high DC 1000V output voltage and 4000 MΩ insulation resistance (PV+IR), it provides accurate measurements for both solar and general electrical applications, including testing of energized devices.

In addition, the UT503PV can measure up to 1000V DC and 600V AC, making it highly versatile for a wide range of electrical diagnostics. Moreover, its safety-focused features—such as the auto discharge function and high voltage alarm—ensure safe operation during critical tests.

Furthermore, the tester includes advanced functions like stepping voltage, time measurement, and an instant compare function for enhanced diagnostics and performance analysis. Data management is seamless thanks to USB connectivity and a dedicated Bluetooth app, enabling easy data transfer and report generation for professional documentation.

As a result, the UNI-T UT503PV PV Insulation Tester combines precision, safety, and convenience in a compact and portable design, making it an indispensable tool for professionals who demand reliability and versatility in photovoltaic and electrical system testing.

  • High DC 1000V output with 4000 MΩ insulation resistance (PV+IR).

  • Measures up to 1000V DC and 600V AC for versatile testing.

  • Auto discharge function and high voltage alarm for safety.

  • Advanced diagnostics: stepping voltage, time measurement, and compare function.

  • USB and Bluetooth connectivity for easy data transfer and report generation.

  • Compact, portable, and ideal for solar technicians and electrical professionals.

Specifications of 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 measuremenet(IR)

√(default setting)

Compare function(IR)

Time measurement

Stepping voltage

Auto discharge

High voltage alarm

Energized device test

IR measurement: DO NOT test if the energized device voltage is above 25V

PV IR measurement: the energized device 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

General Features

Product Color

Red + grey

Product Weight(include batteries)

About 0.5KG (including battery)

Product Size

161(L)×117.3(D)×63(H)mm

Accessories

1. Manual: 1pcs

2. Test lead line (1 black test line, 1 remote control test lead line): 2pcs

3. Lantern plug: 1pcs

4. Red/black alligator clip: 1 pair

5. Banana plug to MC4 plug test line: 1 pair

6. Type-C cable: 1 pcs

7. Strap: 1 pcs

8. LR6 AA alkaline Batteries: 6 pc

9. Charging stand (optional, model: UT-W13)

Standard package

case + carton

SPQ

2

Package Size

360×230×290mm