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Factory test item	Description of type letters	Typical technical parameter of 0.28 ~ 200KV system metal oxide attester, whose electric performance is in accordance with GB11032-2000 National standard and IEC standard
Appearance size and weight of polymer housing	Appearance size and weight of porcelain housing	35~220kv line metal oxide arrester
Technical parameters of 35~220KV line arrester with as gaps	Heat-melt & heat-explosion disconnector