7.2.2. Operational behaviour
Initial torque is only some 30 per cent of rated torque. Consequently, in some cases it becomes necessary to parallel switch a starting capacitor of approx. 150 F/kW to the operating capacitor. However, because of its excessive current acceptance after starting, this operating capacitor should be switched off, for example by means of a centrifugal switch.
The magnitude of the operating capacitor must be selected in accordance with a motor power of some 70 F/kW and in line with voltage level.
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