Tankii ọla kọpa nickel alloy nwere obere nguzogide eletriki, ezigbo nguzogide okpomọkụ na nguzogide nchara, dị mfe nhazi na ịgbado ọkụ.
A na-eji ya eme ihe dị mkpa na relay overload, ihe mgbochi okpomọkụ dị ala, na ihe mgbochi eletriki
Ngwa eletriki. Ọ bụkwa ihe dị mkpa maka ikpo ọkụ eletriki.eriri.

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