Polymeric Surge Arrester , ZnO Surge Arrester
Description:
Polymer surge arrester is a device to protect electrical equipment from over-voltage transients caused by external (lightning) or internal (switching) events. Also called a surge protection device (SPD) or transient voltage surge suppressor (TVSS), thisclass of device is used to protect equipment in power transmission and distribution systems. (For consumer equipment protection, different products called surge protectors are used.) The energy criterion for various insulation material can be compared by impulse ratio, the surge arrester should have a low impulse ratio, so that a surge incident on the surge arrester may be bypassed, to the ground instead of passing through the apparatus.
Specifications:
| Type | YH5W5-15/33 |
| Rated voltage---------kV | 15 |
| MOCV ----------------kV | 12.7 |
| Nominal Current-------kV | 5 |
| Residual voltage of steep impulse----at 5kA(kV) | 43.5 |
| 8/20µS Residual voltage of lightning impulse current kV(Peak value)-----at 5kA(kV) | 40 |
| Residual voltage of switching impulse current kV (peak value)----at 1kA (kV) | / |
| 1mA D.C reference voltage (kV) | 21.2 |
| Line discharge level | 1 |
| 2mS long duration impulse current A | 250 |
| 4/10µS High current impulse kA | 65 |
| Lightning impulse withstand kV | 95 |
| Power frequency voltage withstand(dry/wet)kV | 28 |
| 0.1S TOV--------------kV | 18 |
| 1S TOV----------------kV | 17.25 |
| 10S TOV---------------kV | 16.5 |
| 1200S TOV-------------kV | 15 |
| Creepage distance ----mm | 500 |
| Material employed in series non-linear resistor | Zinc Oxide |
