Overview - UNI-T UT503PV User Manual

UT503PV

1. Overview

UT503PV can be used to measure photovoltaic energized (maximum: 1000V DC) insulation
resistance and conventional insulation resistance (de-energized) and automatically identify AC/DC
voltage. It has multiple functions including: photovoltaic insulation resistance measurement without
solar panel in power outage/short circuit condition or at night, voltage stepping, Bluetooth
transmission, automatic discharge, high voltage warning, remote-controlled test lead operation,
and more. UT503PV is commonly applied to test insulation resistance for various equipment such
as photovoltaic panel, battery energy storage system, new energy vehicles, etc.
1.1 Model
Model Rated voltage Insulation resistance range Short-circuit current
0.125MΩ~4000MΩ
Less than 1.5mA
UT503PV 125V, 250V, 500V, 1000V
1.2 Features
1. Photovoltaic insulation resistance measurement (PV)
2. Conventional insulation resistance measurement
3. AC/DC voltage testing (VDC/VAC)
4. Maximum insulation resistance range: 4000MΩ
5. Rated voltage for conventional output (Conventional insulation resistance: 4 positions): 125V,
250V, 500V, 1000V
6. Rated voltage for PV output (Photovoltaic insulation resistance: 2 positions): 500V, 1000V
7. Short-circuit current: <1.5mA
8. Step of each range: 10% of rated voltage
9. Comparative measurement of insulation resistance (COMP)
10. Time-set measurement of insulation resistance (TIME)
11. External voltage detection function to enable monitoring energized voltage of measured object
automatically
12. Designed with timer to record testing time automatically
13. Automatic discharge and high voltage warning
14. Analog bar graph to display the range of insulation resistance testing result
15. Manual/Automatic power off
16. Capable to save 1000 sets of data
17. Data storage/deletion function
18. Data upload function
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