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CMA7 is the classic motor drive unit realized by electro-mechanical working principle. It is universal to all type of tap changers and provides various protections & signals possibly requested by the customer. It is also proven to be applicable in various climatic conditions.
SHM-D is a digital type motor drive unit driven by a stepper motor. The contact-free design makes it extremely neat for mechanical actuation, which consequently extends the operation life. The modular design is highly configurable and it is an ideal solution for different communication protocol output.
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