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電話光端機(jī)電源線和地線連接方法

電話光端機(jī)的電源線連接：設(shè)備標(biāo)準(zhǔn)機(jī)型電源配置為DC-48V或AC~220V，在設(shè)備接入電源之前，請(qǐng)先測(cè)量接入電源的電壓值及電源功率是否在設(shè)備的要求范圍之內(nèi)：-48V電源： -48V±10%；AC220V電源：標(biāo)準(zhǔn)AC220V±20%，50Hz；在給設(shè)備引入電源之前請(qǐng)檢查設(shè)備的電源開(kāi)關(guān)是否置于OFF，…

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