广播电视差转机风机缺相保护器山东高唐县广播电视局张兴全在各县市广播电视发射台站，中小功率发射差转机的推动级及末级功率管，大多采用风冷设备，而风机都采用三相电源供电。风机一旦出现了故障，管子得不到良好的散热，则会导致功率管损坏，从而引起发射机故障使电视... Radio and television transmission machine fan phase protection transformer Gaotang County, Shandong Radio and Television Bureau Zhang Xingquan radio and television stations in various counties launch stations, small and medium-power transmitter and the final stage of the poor power to promote the level of power tube, most of the use of air-cooled equipment, and fans are Three-phase power supply. Once the fan failure, the tube can not get good heat dissipation, it will lead to damage to the power tube, causing the transmitter to malfunction so that the TV ...