There are many benefits to installing the Deragger II over replacing your existing VFD with an Anti-Ragging type. The low cost nature of the Deragger II far outweighs the price of installing a brand new VFD. This will provide you with all the functionality of the new VFD. As well as Anti-ragging the Deragger II will provide all the power analysis of the VFD as well as the typical motor protection found in a modern VFD.
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