【Daily Question 13】June 13, 2018
Thread Content
Multiple choice: ::: Residual current protection devices are mainly used for ( ). A. Prevent electric shock accidents to people B. Prevent power supply interruptions C. Reduce line losses D. Prevent electrical fire accidents E. Prevent people from approaching live conductors AD For management purposes, if you need to access content from a few days ago, please go through the summary post below. https://bbs.hcbbs.com/home.php?m ... w=me&from=space
A. Preventing electric shock accidents D. Preventing electrical fire accidents. Leakage protection devices are mainly used for single-phase electric shock protection； It is also used to prevent fires caused by electrical leaks ； It can also be used to detect and disconnect various single-phase ground faults. It primarily provides protection against indirect contact electric shock ； It can also serve as supplementary protection against direct contact electric shock. A leakage protection device cannot prevent power outages; on the contrary, it automatically cuts off the power supply when the leakage exceeds a certain threshold. It also cannot prevent people from approaching live conductors.