| 摘要 |
An electrical surge arrester comprises a stack of varistors (10) separated by conductive spacers (12), the respective faces of the varistors and the spacers being bonded for electrical and physical contact, and the outer surfaces of the stack having an insulating coating (14). The varistors have different cross-sectional size from the spacers, the elements of larger size thereby providing the 'sheds' of the arrester.
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