chọrọ ịrụ ọrụ eletrik nke onye na-ahụ maka ịwa ahụ 1. Gbochie kọntaktị ozugbo Mgbe oke voltaji na-aga n'ihu na-arụ ọrụ Uc nke nchekwa ịwa ahụ enwere ike dị elu karịa uru acrms nke 50V, ndị a ga-emezu ihe ndị a. Iji gbochie kọntaktị ozugbo (akụkụ ndị na-eduzi enweghị ike ịnweta), a ga-emepụta ihe nchekwa ịwa ahụ ka a ghara imetụ akụkụ ya dị ndụ aka mgbe etinyere ya n'okpuru ọnọdụ ojiji. Na mgbakwunye na nkewa na-echebe ịwa ahụ dị ka enweghị ike ịnweta, a ga-emepụta ihe nchekwa ahụ nke mere na, mgbe etinyere ya na wired maka ojiji nkịtị, akụkụ ndị dị ndụ agaghị enwe ike ịnweta, ọbụlagodi mgbe ewepụsịrị akụkụ ndị nwere ike iwepụ na-enweghị ngwá ọrụ. Njikọ dị n'etiti ọnụ ala ala na akụkụ niile enwere ike jikọọ na ya ga-abụ nke nkwụsịtụ dị ala. A na-enyocha nnabata site na ule. 2. Residual current (ụfọdụ ugbu a) I_PE Maka ndị nchekwa niile nwere ọdụ PE, I_PE a ga-atụ ya na njedebe niile nke onye na-ahụ maka ịwa ahụ jikọtara na ọkụ ọkụ nke voltaji ule ntụaka (UREF) dịka ntuziaka onye nrụpụta si dị. A na-enyocha nnabata site na nnwale, nke na-adabaghị na SPD ndị ejikọrọ naanị na N-PE. 3. Voltage nchedo larịị Up The mmachi voltaji nke onye na-echebe anya should not exceed the voltage protection level specified by the manufacturer. Compliance is checked by tests. 4. Action load test When the maximum continuous working voltage Uc is applied, the onye na-echebe anya shall be able to withstand the specified discharge current without unacceptable changes in its characteristics. In addition, the voltage switch-type onye na-echebe anya or combined onye na-echebe anya shall at least be able to cut off the freewheeling current of the dry rated short-circuit current I_SCCR. A na-enyocha nnabata site na ule.

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Oge nzipu: Apr-20-2022