Core components: Zinc oxide valve plate as the main body, significant nonlinear volt-ampere characteristics, current capacity adapted to system short-circuit current (≥ 40kA), response time ≤ 25ns;
Shed Material: Composite silicone rubber material, weather resistance covering -40 ℃~+85 ℃, protection level IP65, weight reduced by 30% compared to traditional ceramic type;
Some models integrate voltage equalization rings to balance ground stray capacitance and prevent partial discharge breakdown (especially suitable for extended designs at high voltage levels of 500kV and above);
Auxiliary design: Configure a disconnector to quickly cut off the power frequency continuous current in case of a fault, avoiding equipment damage and expansion
Power station type: suitable for substation incoming line end and transformer high voltage side protection;
Line type: suspended or pedestal design, partially integrated with disconnector function, can quickly cut off power frequency continuous current and reduce the lightning trip rate.
Execution standard: It must meet national standards such as GB/T 18802.1, IEC60099-4, and some models are suitable for high altitude (≤ 2000 meters) and anti-pollution flashover requirements
| Surge arrester rated voltage | Surge arrester system voltage | Nominal discharge current 20kA level | Nominal discharge current 10kA level | System nominal voltage | ||||||
Stee wave impulse current residual voltage | Lightning impulse current residual voltage | Operation Impulse Current Residual Voltage | 1 m A DC reference voltage | Stee wave impulse current residual voltage | Lightning impulse current residual voltage | Operation Impulse Current Residual Voltage | 1 m A DC reference voltage | |||
| Virtual value | (peak)≤ | ≥ | (peak)≥ | ≥ | Virtual value | |||||
| 17 | 13.6 | 57.5 | 50 | 42.5 | 25 | 10 | ||||
| 24 | 19.2 | 82.8 | 72 | 61.2 | 42 | 20 | ||||
| 36 | 28.8 | 124.2 | 108 | 91.8 | 47 | |||||
| 42 | 33.6 | 138 | 120 | 98 | 65 | 27.5 | ||||
| 51 | 40.8 | 154 | 134 | 114 | 73 | 35 | ||||
| 54 | 43.2 | 163 | 142 | 121 | 77 | |||||
| 96 | 75 | 288 | 250 | 213 | 140 | 66 | ||||
| 108 | 84 | 315 | 281 | 239 | 157 | 110 | ||||
| 114 | 89 | 341 | 297 | 252 | 165 | |||||
| 216 | 168 | 630 | 562 | 478 | 314 | 220 | ||||
| 312 | 237 | 847 | 760 | 643 | 442 | 330 | ||||
| 324 | 246 | 880 | 789 | 668 | 459 | |||||
| 444 | 324 | 1238 | 1106 | 907 | 597 | 1137 | 1015 | 900 | 597 | 500 |
| 468 | 330 | 1306 | 1106 | 956 | 630 | 1198 | 1070 | 950 | 630 | |
At 110kV substation incoming line ends, on transformer high and low voltage sides, and along transmission lines, the primary goal is lightning overvoltage protection, limiting the overvoltage amplitude to below the equipment insulation withstand level. This core protective function is reliably performed by the Histe high voltage surge arrester, which is built with high-quality metal oxide varistors. Furthermore, it enables power frequency continuous current cutoff, combined with a disconnector, to reduce the lightning trip rate and equipment maintenance costs.
Coastal salt spray and industrial pollution areas require the use of composite jackets, combined with pressure equalization rings or anti fouling flash coatings to enhance stability;
Priority should be given to fully sealed zinc oxide lightning arresters in high-altitude areas (≤ 2000 meters) to avoid seal failure caused by pressure changes
