The air-conditioning system of the Harmony-series high-power AC traction locomotive has successfully passed its type test.


Our company’s newly manufactured TTK33L-4.5D and TTK43M-6.0D Harmony‑type high‑power AC traction locomotive air‑conditioning units have successfully passed the electromagnetic compatibility tests conducted by China Railway Inspection and Certification Zhuzhou Traction Electrical Equipment Inspection Station Co., Ltd., as well as the performance tests carried out by China Railway Inspection and Certification Qingdao Vehicle Inspection Station Co., Ltd.

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