裸丝电热水器“二次接地”保护技术

“Twice grounding protection technology” used in bare wire heaters

裸丝加热技术在欧洲、东南亚等用水环境较好的国家和地区应用广泛,而我国的用电环境和用水环境恶劣。本文提出一种裸丝电热水器"二次接地"保护技术,此技术根据供配电系统设计国标要求和供电电网原理,基于"零线"作为更加可靠的"保护接地",能够在接地失效和水电阻防电墙失效的情况下,有效防止漏电,保护人身安全。

The bare wire heating technology is widely used in Europe, Southeast Asia and other countries and regions where water environment is good, while the electronic environment and water environment of our country is terrible. This paper presents ＂twice grounding protection technology＂ used in bare wire electric water heaters, which is based on code for design electric power supply systems and the principle of power supply. This technology takes the neutral line as a more reliable ＂protective grounding＂, that can effectively prevent the electricity leakage and protect human security when grounding and electric guard get malfunctional.