DEVICE FOR CONTROL OVER THREE-PHASE ASYNCHRONOUS ELECTRIC MOTOR OF CRYOGENIC SYSTEM WITH PROTECTION AGAINST OPENING OF PHASE

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to electrical engineering and is u0434u043bu00a0 u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0 three-phase u0430u0441u0438u043du0445u0440u043eu043du043du044bu043cu0438 u044du043bu0435u043au0442u0440u043eu0434u0432u0438u0433u0430u0442u0435u043bu00a0u043cu0438 jolo is u0434u0438u043bu044cu043du044bu0445 and cryogenic systems.purpose u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 u00a0u0432u043bu00a0u0435u0442u0441u00a0 increased reliability of the cryogenic system by u0434u0443u0431u043bu0438u0440u043eu0432u0430u043du043du043eu0433u043e u043au043eu043du0442u0440u043eu043bu00a0 u0447u0435u0440u0435u0434u043eu0432u0430u043du0438u00a0 phases causing u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0 and u043fu0440u0435u0434u043eu0442u0432u0440u0430u0449u0435u043du0438 u00a0 u0432u043au043bu044eu0447u0435u043du0438u00a0 u044du043bu0435u043au0442u0440u043eu0434u0432u0438u0433u0430u0442u0435u043bu00a0 within a specified time after u0432u044bu043au043bu044eu0447u0435u043du0438u00a0 technology extracts. an u043fu0438u0442u0430u043du0438u00a0 on motor u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 by u043du0430u0436u0430u0442u0438u00a0 button start.block, through a switch connected to the u043fu0440u0435u043eu0431u0440u0430u0437u043eu0432u0430u0442u0435u043bu00a0u043c u0444u0430u0437u043du044bu0445 u043du0430u043fu0440u00a0u0436u0435u043du0438u0439 (sfi) and controlling the phases of the network with the alternation of phases u0444u043eu0440u043cu0438u0440u0443u0435 t at its output a signal log, 1. the first output unit u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0 u0444u043eu0440u043cu0438u0440u0443u0435u0442u0441u00a0 signal at the switch, through which food u043fu043eu0434u0430u0435u0442u0441u00a0 to the motor.after the expiration of the specified time after the passage u0432u043au043bu044eu0447u0435u043du0438u00a0 switch at the second exit block u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0 u0444u043eu0440u043cu0438u0440u0443u0435u0442u0441u00a0 signal u0443u043fu0440u0430u0432u043bu0435u043du0438u00a0 switch. the signal of the 1st group are u043eu0442u043au043bu044eu0447u0430u044eu0442u0441u00a0 entrances block u043au043eu043du0442u0440u043eu043bu00a0 u0447u0435u0440u0435u0434u043eu0432u0430u043du0438u00a0 phases, and to u0432u0445u043eu0434u0430u043c 2nd group of the unit converters (u043fu043eu0434u043au043bu044eu0447u0430u044eu0442u0441u00a0 exits. fri).the control u0447u0435u0440u0435u0434u043eu0432u0430u043du0438u00a0 phases u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u0435u0442u0441u00a0 on u044du043bu0435u043au0442u0440u043eu0434u0432u0438u0433u0430u0442u0435u043bu00a0 thus u043fu043eu0442u0440u0435u0431u043bu0435u043du0438u00a0 phases. when you click the stop switch switches the motor from the network, the switch shuts down the block from the current u043au043eu043du0442u0440u043eu043bu00a0 converters and connects it to the u043fu0440u0435u043eu0431u0440 u0430u0437u043eu0432u0430u0442u0435u043bu00a0u043c u0444u0430u0437u043du044bu0445 u043du0430u043fu0440u00a0u0436u0435u043du0438u0439. at the same time, at the output of the logical block u0444u043eu0440u043cu0438u0440u0443u0435u0442u0441u00a0 signal log. 1, on which u0432u043au043bu044eu0447u0430u0435u0442u0441u00a0 relay time.after the processing of the specified technology extracts the time the device is ready to re integrate u044du043bu0435u043au0442u0440u043eu0434u0432u0438u0433u0430u0442u0435u043bu00a0 through button to start. 15). | sl vi yu (yu with