But in the end, influenced by political factors, it was called HXD3 electric locomotive.
Tissot was named DJ3, and then DJ3, the predecessor of HXD3, was cancelled. In 2002, China CNR Datong Locomotive Works independently developed a 200km/h AC drive passenger electric locomotive, which can be used for traction of 200km/h high-speed passenger trains. The locomotive power is 4800kW, and the locomotive adopts advanced AC drive technology, which has the characteristics of wide constant power range, large shaft power, good adhesion characteristics, high efficiency and high power factor, which provides a guarantee for China's railways to enter the ranks of high-speed transportation. The main features of this locomotive are:
Lightweight, fully separated and combined transformer
The transformer is of horizontal structure, installed by car body hoisting, and is a multi-winding fully split integrated transformer. The model number is JDFP-6272/75. Secondary resonant reactor, auxiliary converter reactor, train power supply reactor * * * oil tank, * * * with cooling system.
Advanced high-speed bogie
The bogie is of B0-B0 structure, with integral wheels, elastic suspension of traction motor, six-link wheelset hollow shaft transmission device, middle low-position push-pull traction device, wheel disc braking for foundation braking, spiral spring plus unilateral axle box pull rod for positioning in the first suspension, and high-winding spiral spring for the second suspension. In order to ensure the locomotive has good running quality, in addition to installing shock absorbers, tread sweeper and solid wheel flange lubrication devices are added.
Streamlined lightweight body
Light integral load-bearing welded structure; Double cab and streamlined head type; There is a center sill underframe; Aluminum alloy large top cover; Side wall structure combining grid structure and truss structure; Two connecting beams; The top cover, side wall and two beams are sealed with adhesive tape; A side baffle is erected at the bottom of the car body; The traction rod seat is suitable for the traction mode of the inclined pull rod device in the middle of the bogie. The locomotive ventilation system adopts the independent ventilation mode of roof interlayer, and the dust filter adopts the inertial filter of roof slope.