The system states the traction characteristic, dynamic brake characteristic, main transmission system, AC and DC auxiliary system, locomotive control system and MU control system of SDA3 type AC transmission diesel locomotive.%系统阐述SDA3型交流传动内燃机车的牵引特性、制动特性、主传动系统、交、直流辅助系统、机车控制系统、重联控制系统等。
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