DEVICE FOR DIFFERENTIAL-PHASE PROTECTION AGAINST ONE-PHASE SHORT-CIRCUITS TO GROUND IN POWER NETWORK WITH INSULATED OR GROUNDED-THROUGH-RESISTOR NEUTRAL

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to electrical power to devices, namely the protection of circuits on the ground in the world of electric u0441u0435u0442u00a0u0445, including u0441u0435u0442u00a0u0445 with u0441u0442u0430u0442u0438u0447 u0435u0441u043au0438u043cu0438 and u044du043bu0435u043au0442u0440u043eu043cu0435u0445u0430u043du0438u0447u0435u0441u043au0438u043cu0438 u043fu0440u0435u043eu0431u0440u0430u0437u043eu0432u0430u0442u0435u043bu00a0u043cu0438 frequencies with isolated, u043au043eu043cu043fu0435u043du0441u0438u0440u043eu0432u0430u043du043du044bu043cu0438 or u0437u0430u0437u0435u043cu043bu0435u043du043du044bu043cu0438 through a resistor u043du0435u0439u0442u0440u0430u043bu00a0u043cu0438 simultaneous u0433u0435u043du0435u0440u0430u0442u043eu0440u043e in the.increased sensitivity to u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 u00a0u0432u043bu00a0u0435u0442u0441u00a0 protection and ensuring the independence of the u0441u0440u0430u0431u0430u0442u044bu0432u0430u043du0438u00a0 from changes of industrial frequency and u0442u0435u043cu043fu0435u0440u0430u0442 u0443u0440u044b environment. the device is based on the comparison of phases of leakage (of zero after