The Hitachi HEP passenger elevator door system adopts permanent magnet synchronous frequency conversion system and disc double brake design. The brake disc and the traction sheave are integrally cast, which has fast response speed, high speed regulation precision, wide range, low speed characteristics and low energy consumption. The advantage is that the operation is safer and more comfortable. Ren Tianxiao, chairman of the China Elevator Industry Association, said that the widespread adoption of the concept of energy conservation and environmental protection and green elevators will inevitably make Hitachi Elevator an excellent example of the harmonious integration of social sustainable development and energy conservation and environmental protection under the new situation.
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