Surgearrester for line
Surge arrester for a power line is a protective device installed in electrical distribution systems to mitigate the impact of voltage surges and transient overvoltages. It operates by diverting excess electrical energy to ground when the voltage exceeds a predefined threshold, thereby safeguarding the integrity of the electrical infrastructure and connected equipment. This device is essential in ensuring the reliability and longevity of power lines by preventing damage that could result from unpredictable electrical disturbances.
technical parameters of Line type surge arrester：
| Gapless surge arrester | ||||||||||
| System nominal voltage (kV) | Arrester Type | Rated voltage (kV) | Arrester continuous operating voltage (kV) | Dc 1mA reference voltage (kV) | Maximum leakage at 0.75x DC 1mA voltage (μA) | Peak residual voltage (kV)≯ | 2000 μs square wave current capacity (A) | 4/10 high current impulse withstand (kV) | ||
| 8/20 lightning impulse current | 30/60 operation impulse current | 1/4 steep impulse current | ||||||||
| 35 | (HY)YH5WX-51/134 | 51 | 40.8 | 73 | 50 | 134 | 114 | 154 | 400 | 65 |
| 35 | (HY)YH5WX-54/150 | 54 | 43.2 | 77 | 50 | 150 | 128 | 169 | 400 | 65 |
| 66 | (HY)YH5WX-96/250 | 96 | 75 | 140 | 50 | 260 | 221 | 299 | 600 | 65 |
| 66 | (HY)YH5WX-96/275 | 96 | 75 | 154 | 50 | 275 | 234 | 316 | 600 | 65 |
| 110 | (HY)YH5WX-108/281 | 108 | 84 | 157 | 50 | 281 | 239 | 323 | 600 | 65 |
| 110 | (HY)YH5WX-108/309 | 108 | 84 | 173 | 50 | 309 | 263 | 348 | 600 | 65 |
| 110 | (HY)YH10WX-108/281 | 108 | 84 | 157 | 50 | 281 | 239 | 315 | 600 | 100 |
| 110 | (HY)YH10WX-108/309 | 108 | 84 | 173 | 50 | 309 | 263 | 348 | 600 | 100 |
| Series gap surge arrester | ||||||||||
| System nominal voltage (kV) | Arrester Type | Rated voltage (kV) | Power frequency discharge voltage (kV) ≮ | 1.2/50 impulse discharge voltage (kV) peak value ≯ | Maximum conducting current (μA) | Peak residual voltage (kV)≯ | 2000 μs square wave current capacity (A) | 4/10 high current impulse withstand (kV) | ||
| 8/20 lightning impulse current | 30/60 operation impulse current | 1/4 steep impulse current | ||||||||
| 35 | (HY)YH5CX-42/120 | 42 | 80 | 120 | 20 | 120 | 100 | 138 | 400 | – |
| 35 | (HY)YH5CX-42/150 | 42 | 80 | 150 | 20 | 150 | 128 | 169 | 400 | – |
| 66 | (HY)YH5CX-75/218 | 75 | 117* | 117* | 20 | 218 | – | 246 | 600 | 65 |
| 110 | (HY)YH5CX-90/260 | 90 | 170* | 260 | 20 | 260 | – | 292 | 600 | 65 |
| 110 | (HY)YH10CX-90/260 | 90 | 170* | 20 | 20 | 260 | – | 292 | 600 | 100 |
| 110 | (HY)YH10CX-90/280 | 96 | 170* | 280 | 20 | 280 | – | 314 | 600 | 100 |
| 110 | (HY)YH10CX-102/296 | 102 | 170* | 296 | 20 | 296 | – | 332 | 600 | 100 |
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