Electromatic engineers pvt. Ltd. An iso:9001:2000 company, under the brand name unitorq is the manufacturer of group industrial clutches and brakes. Being a part of that normally off clutches are flange mounted clutches are normally off type and operate on dc voltage. Salient features of normally off clutches are as follows:
1. normally off type clutches operate on d.C. Voltage, hence a.C. To d.C. Conversion is done by means of a suitable rectifier.
2. switching of the clutch can be on either side.
3. however, once application demands, higher switching frequency / faster engagement and disengagement time, switching must be carried out on d.C. Side.
4. to restrict the high inductive voltage / back emf a suitable suppressor and capacitor network is provided across the contactor coil.
