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在当前的我国建筑、基建施工现场及临时线路接线工作中,采用的都是三相五线制供电方式。部分企业采用三相四线制也需要改为三相五线制,确保用电的安全性。当前在施工现场临时用时中采用的三相五线制接零保护系统的接线方式中,主要由单相三线、无中性点的三相四线、有中性点的三相四线以及三相五线等共同组成,分别采用三芯、四芯和五芯电缆,其在应用过程中有效的保证了用电的安全。
In the current China’s construction, infrastructure construction site and temporary wiring work, using three-phase five-wire power supply. Some companies use three-phase four-wire system also need to be replaced by three-phase five-wire system to ensure the safety of electricity. Currently used in the construction site temporary use of three-phase five-wire pick-zero protection system wiring, mainly by the single-phase three-wire, no neutral three-phase four-wire, three-phase four-wire neutral and three Phase, five lines and other common components, respectively, using three-core, four-core and five-core cable, which in the application process effectively ensure the safety of electricity.