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Zinc oxide Block for Lightning arrester is non-linear resistor utilizing as semiconductor electrocnic ceramic element mainly composed of zinc oxide and its resistance change as a function of applied voltage.It's called varistor or mental oxide varistor, just as it is sensitive to voltage's change.
| Technical parameters of Zinc Oxide Varistor For HV Arresters | |||||||
Modle No. | Diameter | Height mm | Voltage at 1mA D.C. | Ratio of residual Voltage at 8/20us lightning impulse and 1mA DC | 4/10 μs 2 times high current | 18times of 2μs rectangular current impulse | Usage | |
| mm | mm | KV | 5kA | 10kA | kA(max.) | kA(max.) |
|
D3 | 35+0-1 | 24±1 | 5.0±0.5 | 1.85 |
| 40 | 100 | Distribution Power Station |
D4 | 42±1 | 24±1 | 5.0±0.5 | 1.8 |
| 65 | 200 | Power Station Electric mahinery Parallel complementary capacitor |
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Zinc Oxide Blcok for Lightning Arrester