Water-Cooled Insulation Tester
Darui Electric recommends：
Main Features
Water-Cooled Insulation Resistance TesterFor water-cooled generator insulation resistance, absorption ratio, polarization index. 2500V rated, up to 100GΩ.
No water polarization compensation needed. Accuracy maintained even at 3kΩ frame-to-pipe resistance.
Accuracy guaranteed when water resistance >80kΩ.
Analog meter and 3 LCD digital display simultaneously.
Dual-scale auto-ranging, log scale for easy reading.
Displays output voltage and ambient temperature.
Timer accumulates test time, displays min/sec.
Press [Rt] to read instant resistance on LCD.
Auto measures and stores R15S, R60S, R10min, ratios.
Complete protection for safe operation.
1. 32-bit MCU, Chinese interface, easy operation.
2. Auto calculates absorption ratio and polarization index, stores data at 15s, 1min, 2min, 10min.
3. High output, short-circuit current >45mA.
4. Fully enclosed HV module with protection resistor, safe and reliable.
5. Strong anti-interference for EHV substation field use.
6. Auto discharge after test with real-time monitoring.
7. Rechargeable battery (optional), 10-12hr continuous use.
Technical Specifications
Accuracy:±5%
Range:0.1M～100GΩ
Test Voltage:2500V Output Current：>25mA
Short Circuit Current:>45mA
Measurement Time:1-10 min (depends on mode)
Charger Power: 180~270VAC, 50/60Hz±1% (mains or generator)
(NEVER plug 220V directly into instrument, use dedicated charger only)
Charger output: DC36V
Internal Battery: Large capacity battery (4000mAH) (optional)
Operating Environment:Temp -10~40C, RH 20~80%.
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
