This product is based on GB11032-2010 "AC gapless metal oxide surge arrester". Taking YH5WS-17/50 as an example, the model description is as follows:

Y: Metal oxide lightning arrester

H: Composite jacket, without H, it is a porcelain sleeve

5: The nominal discharge current varies depending on the voltage level

W: No gap C: series gap B: parallel gap

S: Distribution type Z: power station type D: motor type R: capacitor type T: railway type

17: The rated voltage of a lightning arrester (kV), which is the effective value of the allowable power frequency voltage that can be applied to the lightning arrester, varies depending on the model and voltage level

50: Peak residual voltage at nominal discharge current (kV), varies by model and voltage level

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