10KV High Voltage Megohmmeter
Darui Electric recommends:
Technical Features:
1. Strong anti-electric-field interference capability, reaching 2mA (50Hz), proven suitable for on-site measurement without wire disconnection of 500kV large transformer insulation resistance parameters in 500kV substations.
2. Test power supply short-circuit current > 5mA, suitable for large-capacity and large-inductance testing.
3. Wide resistance measurement range, from 0.5MΩ to 2000000MΩ (2000GΩ), with accurate readings and high resolution.
4. Wide test voltage range, selectable from 0.25, 0.5, 1, 2.5, 5, 10, 20kV, or smoothly adjustable from 0V to the required voltage.
5. Timer and alarm function to remind users to record and analyze the absorption ratio and polarization index of the measured object.
6. Range and Accuracy:
| Range (Limited Voltage) | Resistance Measurement Range | Accuracy |
|---|
| 20MΩ / <2.5kV | 0.01 ~ 19.99MΩ | ±(5%+5 digits) |
| 200MΩ / <2.5kV | 5.0 ~ 199.9MΩ | ±(5%+5 digits) |
| 2GΩ | 0.05 ~ 1.999GΩ | ±(5%+5 digits)* |
| 20GΩ | 0.5 ~ 19.99GΩ | ±(5%+5 digits)* |
| 200GΩ | 5.0 ~ 199.9GΩ | ±(10%+10 digits)* |
| 2000GΩ | 50 ~ 1999GΩ | ±(20%+10 digits) |
* GΩ range calibration voltage is 2.5kV
* 2000GΩ range is a reference range, for use in dry environments with relative humidity less than 70%.
7. Anti-electric-field interference capability: 2mA (50Hz)
8. Timing and alarm function: Stopwatch displays up to 19 min 59 sec, with 20-minute cycle. Sound beeps at 15 sec, 60 sec, and every minute. At the set time, a short beep sounds while the resistance reading holds for 5 seconds. Continuous audible alarm when measured resistance is below range limit or reading is invalid.
9. Display: Three 3½-digit LCD displays showing test voltage, resistance, and time respectively.
10. Power supply: 10 built-in 1.2V/1800mAh NiMH rechargeable batteries providing DC12V, with AC 220V input for battery charging or float charging operation.
11. Operating environment: Temperature 0 ~ 40°C, Relative humidity: 20 ~ 90%
12. Dimensions and weight: 315 × 240 × 155mm, 5kg
Note: The above information and technical parameters are provided by Yangzhou Darui Electric Co., Ltd.
