Product Introduction
With the rapid development of China's electric power industry, electrical preventive testing has become an essential component of the safe operation and maintenance of power systems. Insulation diagnosis plays a critical role in detecting insulation defects or faults in electrical equipment.
Currently, electrical equipment such as transformers and generators is trending toward larger capacity, higher voltage, structural diversification, and improved sealing. This evolution demands insulation resistance testers that offer high output capacity, strong anti-interference capability, and easy portability. In response, we have designed and developed this series of meters specifically for high-interference field testing of large high-voltage transformers, electrical appliances, remote power cables, buried cables, and other electrical insulation resistance applications—suitable for high-voltage substations, power plants, and similar environments.
The instrument system integrates the advantages of analog circuits, digital circuits, and mechanical operation, achieving a leading position in output voltage, output current, measurement range, measurement accuracy, and anti-interference capability.
Technical Parameter
| Measurement voltage range | 0.5kV、1kV、2.5kV、5kV、10kV、15KV |
| Measurement voltage accuracy | ±(5%+10V) |
| Short circuit current | 10mA |
Measurement range and accuracy
| Measurement range | Resistance measurement range | Accuracy |
| 20MΩ | 0.01～19.99MΩ | ±(5%+3d) |
| 200MΩ | 5.0～199.9MΩ | ±(5%+3d) |
| 2000MΩ | 50～1999MΩ | ±(5%+3d) |
| 20GΩ | 0.5～19.99GΩ | ±(5%+3d) |
| 200GΩ | 5.0～199.9GΩ | ±(10%+3d) |
| 2000GΩ | 50～1999GΩ | ±(20%+10d) |
Basic Parameters
| Anti-electric field interference ability | 2mA(50/60Hz) |
| Time and alarm functions | maximum value of stopwatch is 19 minutes and 59 seconds. 20 minutes for a cycle. The stopwatch will tell the time at these time points: 15 seconds, 60 seconds and every 60 seconds.When telling time, resistance readings hold for 3 seconds.If the measured resistance is below the lower limit of range, the reading is invalid and the instrument will continuously sound to give an alarm. |
| Display | three and a half bits LCD digital meter (three), respectively show test voltage, test resistance, test time. |
| Power supply | DC: rechargeable lithium battery, DC15V power supply. With AC (50 / 60Hz) special adapter access port to charge the battery. |
| Operating Conditions | Temperature:-20℃~+40℃; Relative humidity:20%~90% |
| Dimensions | 315×240×180mm3 |
| Weight | 5.5kg |
Product Features
1、With strong anti-electric field interference ability up to 2mA (50Hz), it is suitable for 500kV substation without dismantling wire to test insulation resistance of 500kV large-scale transformer
2、The short-circuit current is 10mA, be suitable for testing high capacity and high inductance
3、Wide resistance range: 0.01MΩ ~ 1999GΩ. With high-resolution, having accurate readings
4、Wide output voltage range: 0.5kV、1kV、2.5kV、5kV、10kV、15KV, adjustable, you can smoothly adjust voltage from 0V to the desired value
5、With timing function, remind users to record, and analyze absorptance and polarization index of measured target
6、High quality: The key parts are all imported components, to ensure accuracy and accurate
7、Easy to use: one-piece chassis, small size, light weight, easy to carry
8、Look beautiful: rugged and strong grinding material, the instrument's overall texture and longer life
Application area
Adjustable high-voltage digital testers are widely used in high-voltage substations, power plants, and other sites of the power system to measure the insulation resistance characteristics of large high-voltage transformers, motors, remote power cables, or buried cables and other electrical equipment. Meanwhile, it can also be used in fields such as postal and telecommunications, mechanical and electrical installation, and maintenance, serving as a testing tool in these industries.
