DMI 180-400

If smooth running free from jerks at low speeds is to be obtained, the magnetization of the armature core laminations must be uniform. The built-in magnetic polarization, a normal characteristic of electrical steel results in jerky running at low speeds, if this cannot be suppressed.

The design of the DMI motor completely eliminates this phenomenon. Partly by the special manufacturing process, which levels out the variations in the armature core laminations, and partly by means of the skewed configuration of the armature coil slots (see picture). It is essential to obtain a uniform and 100 per cent controlled running at the very lowest speeds.