Inside a Modern Portable Intelligent Insulation Resistance Tester
2026-07-27
Field Insulation Testing used to mean squinting at an analog dial and doing themath by hand. This portable intelligent insulation resistance tester replaces all of that with a bright touchscreen, automatic
diagnostics, and up to 10 kV of clean DC output, in a case that weighs just 3.9 kg.
Safety built into the design
The whole instrument uses a fully isolated power scheme. The low-voltage side, the battery, controls, and human interface, is completely isolated from the high-voltage generation and sampling circuits, with an isolation voltage as high as 30 kV. That separation is what keeps the operator safe when 10 kV is live.
A display you can actually read outdoors
The 7-inch industrial LCD runs at 1024x600 with 400 cd/m2 brightness and an 85 degree viewing angle, behind explosion-proof capacitive glass. A single shuttle knob plus backlit buttons make voltage
selection fast and tactile, no fumbling through menus in the field.
Wide range, real accuracy
Six preset voltages (100 V to 10 kV) plus a custom mode from 50 V to 10 kV in 10 V steps cover everything from control wiring to HV cables. Resistance range spans 10Ω to 20 TΩ, and short-circuit current is adjustable from 1 to 6 mA for charging large capacitive loads faster.
Data and endurance
Batch-export results to USB, and upgrade both the main and high-voltage firmware over the same port. A built-in lithium battery (16.8 V, 4400 mAh) gives about 6 hours at 5 kV into 100 MΩ, with a built-in fast charger.
Key specs:
- Test voltage: 100 V-10 kV preset, 50 V-10 kV custom
- Range: 10 Ω to 20 TΩ; short-circuit current 1-6 mA
- Isolation voltage: 30 kV; continuous output 55 W
- Size 320x270x150 mm, 3.9 kg, -10 C to +50 C
Explore the full Portable Insulation Resistance Tester
FAQ:
Q: What is the maximum test voltage and range?
A: Up to 10 kV with a measurement range of 10 Ω to 20 TΩ.
Q: How does it protect the operator?
A: A fully isolated design separates the low-voltage controls from the
high-voltage circuit with up to 30 kV of isolation.