The hx electric locomotive adopts CCBII electro-pneumatic braking controlled by microcomputer. According to relevant public information, HX electric locomotive is an 8-axle heavy-haul freight electric locomotive connected by two identical 4-axle electric locomotives through internal reconnection, and each locomotive has a cab, which is a complete system. The locomotive adopts the main circuit form of AC -DC- AC electric drive, which has high reliability and convenient maintenance. The car body adopts the center beam bearing mode, which is convenient for modular production. The bogie adopts low traction rod and the foundation brake adopts gear train, which effectively improves the reliability of the locomotive. CCBII air braking system is adopted, and regenerative braking is adopted for electric braking, which is energy-saving and environment-friendly. The locomotive has external reconnection control function and is equipped with LOCOTROL remote reconnection control system. The driver can control two reconnected vehicles in one cab.