Product Introduction
With the rapid development of China's electric power industry, electrical preventive testing has become an essential aspect 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 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 properties—suitable for high-voltage substations, power plants, and similar facilities.
The instrument system integrates the advantages of analog circuits, digital circuits, and mechanical operation, achieving a leading position in output voltage, output current, measuring range, measurement accuracy, and anti-interference capability.
Product Characteristics
1. Strong Anti-Interference Capability: With an anti-electric field interference capability of up to 2mA (50Hz), the instrument is suitable for testing insulation resistance of 500kV large-scale transformers in 500kV substations without the need to disconnect wires.
2. High Short-Circuit Current: The short-circuit current is 10mA, making the instrument ideal for testing high-capacity, high-inductance equipment.
3. Wide Resistance Measurement Range: Covers a range from 0.01MΩ to 1999GΩ with high resolution, ensuring accurate readings.
4. Wide Adjustable Output Voltage Range: Output voltage options include 0.1kV, 0.25kV, 0.5kV, 1kV, 2.5kV, and 5kV, with smooth adjustment from 0V to the desired value.
5. Timing Function: Built-in timing function reminds users to record measurements and supports analysis of absorption ratio and polarization index of the test object.
6. High Quality: Key components are imported to ensure accuracy and reliable performance.
7. Easy to Use: Integrated single-chassis design with compact size and light weight, making it easy to carry and operate.
8. Attractive Appearance: Constructed with rugged, durable materials for enhanced texture and extended service life.
technische Parameter
| Measurement voltage range | 0.1kV、0.25kV、0.5kV、1kV、2.5kV、5kV |
| Measurement voltage accuracy | ±(5%+10V) |
| Short circuit current | 10mA |
Measurement range and accuracy
| Messbereich | Resistance measurement Reichweite | Genauigkeit |
| 20 MΩ | 0.01～19.99MΩ | ±(5%+3d) |
| 200 MΩ | 5.0～199.9MΩ | ±(5%+3d) |
| 2000 MΩ | 50～1999MΩ | ±(5%+3d) |
| 20 GΩ | 0.5～19.99GΩ | ±(5%+3d) |
| 200 GΩ | 5.0～199.9GΩ | ±(10%+3d) |
| 2000 GΩ | 50～1999GΩ | ±(20%+10d) |
Grundparameter
| Anti-electric field interference ability | 2mA (50/60Hz) |
| Zeit- und Alarmfunktionen | 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. |
| Anzeige | three and a half bits LCD digital meter (three), respectively show test voltage, test resistance, test time. |
| Stromversorgung | DC: rechargeable lithium battery, DC15V power supply. With AC (50 / 60Hz) special adapter access port to charge the battery. |
| Betriebsbedingungen | Temperature：-20℃～+40℃；Relative humidity：20%～90% |
| Maße | 315×240×180mm3 |
| Gewicht | 5,5 kg |
