In modern power systems, reliable overvoltage protection is of utmost importance. Our zinc oxide surge arresters with composite housings are specifically designed for systems with voltage levels ranging from 9 to 248kV, providing efficient and stable protection to ensure the safe operation of power equipment.
Product Features
- Excellent Nonlinear Characteristics: The zinc oxide varistors have good nonlinear voltage-current characteristics. Under normal operating voltage, the resistance value is very high, and the leakage current is extremely small. When an overvoltage occurs, the resistance value decreases rapidly, enabling the quick discharge of overvoltage energy and protecting the equipment.
- Gapless Structure: The gapless design is adopted, avoiding the follow current and chopped wave generated by the gap discharge of traditional surge arresters, and improving the reliability and stability of protection.
- Good Insulation Performance: The composite insulation housing features good hydrophobicity, aging resistance, and UV resistance, etc., and can adapt to various harsh environmental conditions, ensuring long-term reliable operation.
- Small Size and Light Weight: Compared with traditional surge arresters, it has a compact structure, small size, and light weight, making it convenient for installation and maintenance.
- Convenient Operation Monitoring: It can be equipped with an online monitoring device to monitor the operation status of the surge arrester in real time and promptly detect potential faults.
Operating Environment Conditions
- Ambient Temperature: From -40°C to +80°C, it can adapt to various harsh climatic conditions.
- Altitude: Not exceeding 4,000 meters, it can operate stably in high-altitude areas.
- Pollution Level: Suitable for heavily polluted environments, with strong anti-fouling flashover ability.
Main Technical Parameter Table
| Item |
Parameter Range |
| Rated Voltage |
9 - 248kV |
| Continuous Operating Voltage |
6.6 - 189kV |
| Nominal Discharge Current |
5kA, 10kA |
| Lightning Impulse Residual Voltage |
≤50 - 600kV |
| Operating Impulse Residual Voltage |
≤40 - 500kV |
| DC 1mA Reference Voltage |
≥12 - 300kV |
