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Product number: ELE002711

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In an ideal world, all wires and connections are well insulated. However, in the real world everything wears out and connections are not perfect. To prevent this from causing problems, it is important to regularly test electrical systems for insulation. Insulation resistance meters test whether the insulation of cables is sufficient. This prevents issues such as short circuits. This measurement is essential to repeat regularly because of corrosion and wear and tear.

The UT512 is an insulation resistance tester. The meter is built from a microprocessor and equipped with good measurement and data processing software. The meters are essential to determine whether equipment and cabling are sufficiently insulated to cope with certain voltages.

The meter can measure up to 600V and can do both AC and DC measurements. For other testers with similar specifications but different measurement ranges, you can look at the UNI-T UT511 and the UNI-T UT513A.


Display count 9999
Measurement range and best precision
Insulation resistance (Ω)VoltageRangeAccuracy Current
500 V0.5 MΩ - 5.0 GΩ100 KΩ - 100 MΩ ±(3%+5) 1 mA - 2 mA @(500 KΩ)
1000 V2 MΩ - 10 GΩ 100 MΩ - 10 GΩ ±(5%+5) 1 mA - 2 mA @(1 MΩ)
1500 V5 MΩ - 20 GΩ 10 GΩ - 100 GΩ ±(10%+5)1 mA - 2 mA @(1.5 MΩ)
2500 V10 MΩ - 100 GΩ 1 mA - 2 mA @(2.5 MΩ)
DC voltage600 V±(2%+5)
AC voltage600 V<100 V ±(2%+8)
≥100 V ±(2%+5)
Resolution1 V
Auto Range
Other functionalities Backlight, Auto off, Timer, Data-hold (18 slots), USB interface
Power source 8 x 1.5V battery (LR14)
Dimensions 202 x 155 x 94 mm
Weight 2 kg

For more details, please take a look at the manual below.


The UNI-T UT512 comes with :

  • 1 x Simple test leads with crocodile clips
  • 1 x USB cable
  • 1 x Power adapter
  • 8 x (LR14) batteries
  • 1 x Toolbox

Pros and cons

  • USB connection interface
  • Bulkier than other insulation resistance testers


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