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12~42kV metal oxide surge arrester,polimeric gapless,great degree of volt-ampere characteristic of resistance slice
The Metal Oxide Surge Arrester is the most advanced over-voltage protector. It is widely used as protective devices against switching and lightning over voltages in power electrical systems such as power transformers ,distributors,generators, compensation capacitors. Its core component--resistance slice adopts the material including zinc oxide and many kinds of metal oxides, compared with traditional silicon-carbide arrester, its volt-ampere characteristic of resistance slice has been improved to great degree, as well as the current-transmit ability of resistance slice, as a result, the capability of arrester has been improved basically and thoroughly.
12~42kV metal oxide surge arrester
| Rated Voltage | 12kV | 24 kV | 36 kV | 42 kV |
| Rated frequency | 48~62Hz | 48~62Hz | 48~62Hz | 48~62Hz |
| Continuous operating voltage | 9.6kV | 19.2 kV | 28.8 kV | 33.6 kV |
| Nominal discharge current | 10kA | 10kA | 10kA | 10kA |
| Power frequency reference voltage | 12kV | 24 kV | 36 kV | 42 kV |
| Lightning impulse residual voltage | 36kV | 72 kV | 108 kV | 126 kV |
| Steep current impulse residual voltage | 41.5 kV | 82.8 kV | 124.2 kV | 145 kV |
| Switching impulse residual voltage | 30.6 kV | 61.2 kV | 91.8 kV | 107 kV |
| Rectangular current withstand 2000μs | 250A | 250A | 250A | 250A |
| High current withstand 4/10μs | 100kA | 100kA | 100kA | 100kA |
| Line discharge class | 1 | 1 | 1 | 1 |
| Partial discharge | 10pC | 10pC | 10pC | 10pC |
| Creepage distance | 369mm | 655mm | 894mm | 1083mm |
| Lightning impulse withstand | 75kV | 125 kV | 185 kV | 200 kV |
| Power frequency withstand(wet 1min) | 35 kV | 55 kV | 80 kV | 90 kV |
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Related Searches:
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lightning arrester
surge arrester
metal oxide arrester
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