Njengoko sonke siyazi, i-vacuum interrupter inemisebenzi yokukhusela kunye nokuqhuma-ubungqina, kuba abafowunelwa bavalelwe kwindawo ephezulu ye-vacuum ngaphakathi kwe-casing evaliweyo, kwaye i-arc phakathi koqhagamshelwano ngexesha lokusebenza ayiyi kuchaphazela indawo yangaphandle....
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