Insulation Resistance Meter UT505A UNI-T

Technical Parameters

Insulation Resistance

Test Voltage 50 V:

• 0.01 MΩ ~ 50 MΩ – accuracy ±(3%+5)

Test Voltage 100 V:

• 0.01 MΩ ~ 100 MΩ – accuracy ±(3%+5)

Test Voltage 250 V:

• 0.01 MΩ ~ 200 MΩ – accuracy ±(1.5%+5)

Test Voltage 500 V:

• 0.01 MΩ ~ 500 MΩ – accuracy ±(1.5%+5)

Test Voltage 1000 V:

• 0.1 MΩ ~ 2000 MΩ – accuracy ±(1.5%+5)
• 2 GΩ ~ 9.9 GΩ – accuracy ±(10%+3)
• 10 GΩ ~ 20 GΩ – accuracy ±(20%+10)

Other insulation test parameters:

• Test voltages: 50 V / 100 V / 250 V / 500 V / 1000 V
• Load current: 1 mA
• Short-circuit current: <2 mA
• Automatic discharge of the measurement circuit
• Stepwise change of test voltage every 10%
• Measurement of dielectric absorption ratio DAR
• Measurement of polarization index PI
• Measurement of test duration
• Multimeter functions

Resistance measurement:

• 0.01 Ω ~ 20 kΩ
• Accuracy: ±(1.5%+3)

DC Voltage Measurement:

• 0 ~ 600 V
• Accuracy: ±(2%+3)

AC Voltage Measurement:

• 0 ~ 600 V
• Accuracy: ±(2%+3)
• True RMS – measurement of true root mean square value

Continuity Tester:

• Audible sound signal facilitating circuit continuity check
• Additional functions
• Automatic range switching
• True RMS
• DAR – dielectric absorption ratio
• PI – polarization index
• COMP – comparative measurements
• Data Hold – freeze display reading
• Memory for up to 99 measurement results
• Measurement of test duration
• Stepwise adjustment of test voltage every 10%
• Automatic discharge of the tested circuit
• 30-segment analog bar graph
• Low battery indicator
• Overrange indicator
• High voltage presence indicator
• Automatic range switching
• Display and construction

Advantages

• Two devices in one – UT505A combines an insulation resistance meter with a universal multimeter, so there is no need to use two separate devices for many tasks.
• Insulation measurement up to 20 GΩ – the wide range allows for demanding measurements that a standard multimeter cannot handle.
• Test voltages up to 1000 V – the user can select the test voltage for a specific application: 50 V, 100 V, 250 V, 500 V, or 1000 V.
• Advanced insulation diagnostics – DAR and PI functions allow for a more accurate assessment of insulation condition, and the COMP function enables comparative measurements.
• True RMS – measuring AC voltage using the true root mean square increases the device's utility for measuring various AC waveforms.
• Result memory – the ability to save up to 99 measurements facilitates documentation and later comparison of results.
• Readable display – the large backlit LCD and 30-segment bar graph make it easier to observe results and value changes during measurement.
• Mobile design – battery power, handy dimensions, and the included case make the UT505A well-suited for service and field work.

If you need a universal device for professional diagnostics of electrical installations and devices, the UNI-T UT505A is a very practical solution. It combines the functionality of an insulation meter with the capabilities of a digital multimeter, offering insulation resistance measurements up to 20 GΩ, test voltages up to 1000 V, DAR and PI functions, comparative measurements, and standard measurements of voltage, resistance, and continuity.

With its wide measurement range, diagnostic functions, result memory, backlit display, and complete equipment, the UT505A will perform well in the hands of electricians and installers, as well as during service, maintenance, and diagnostics of industrial devices.