Power test equipment all have a measurement range, also known as the scale. At the same time, the accuracy of the equipment is also very important. Below, introduce the measurement range and accuracy of the adjustable high-voltage digital megohmmeter.
Quantity Range (Pressure Limit) Resistance Measurement Effective Range Accuracy
20MΩ 0.5 – 19.99 MΩ ± (5% + 5 digits)
200 MΩ; 5.0 – 199.9 MΩ; ± (5% + 5 digits)
2G Ω 0.05 – 1.999 GΩ ± (5% + 5 digits)
20 GΩ 0.5 – 19.99 GΩ ± (5% + 5%)
200 GΩ 5.0 – 199.9 GΩ ± (10% + 10%)
2000 GΩ – 50 ～ 1999 GΩ ± (20% + 10 digits)
Note:
① The calibration voltage for the MΩ range is 0.5KV
② The calibration voltage for the GΩ range is 2.5 kV.
③ The 2000GΩ range is the reference range and is used in dry environments with a relative humidity of less than 70%.
④ When the test voltage exceeds 8kV and the insulation resistance is higher than 20GΩ, the high-voltage electrode conductor exposed to the air will ionize the air and release charges, causing the measured resistance value to be significantly lower. Therefore, in order to obtain accurate measurements, a shielding mesh should be added to the high-voltage electrode conductor exposed to the air.
The adjustable high-voltage digital megohmmeter for power testing is a small device, but it has a huge market demand. It is also often used in conjunction with many large-scale power testing equipment. If you have any inquiries, please contact the customer service of Guodian Xigao. We will arrange a professional product manager to connect with you.
Post time: Apr-24-2026