Special locomotive rectifying power supply for DF11Z

The invention relates to the technical field of rectifying power supplies, and particularly relates to a special locomotive rectifying power supply for DF11Z. In a control loop part, through the series connection of buttons SB1 and SB2 and a KM coil, and the parallel connection of a SB1 contact and an auxiliary contact of an alternating-current contactor KM, a self-locking loop of a contactor KM coil is formed, and then the start and stop functions of a power supply are achieved; a display lamp LMAP displays whether a power supply exists; in a main loop part, an external three-phase power supply is connected to a transformer T to carry out voltage transformation through an air switch QF and a main contact of the alternating-current contactor KM, a three-phase fully-controlled rectifier bridge carries out rectification, and then a direct-current 110V voltage is outputted; a voltmeter and an ammeter are used for displaying the values of the outputted direct-current voltage and a direct-current; and a capacitor and a direct-current reactor L1 achieve filtering and protection effects.