Moderator Art Posted August 16, 2011 Moderator Report Posted August 16, 2011 Hi Sandy, If you match the power required to the capacitor then for small stuff it should be ok especially with relatively small start loads (clutch motor is good example). If you are to err, then size the cap for the higher load because mismatches in the high load side will generate a boatload of heat. If you are matched for high load then the low loads will do little more than waste a little electricity. The capacitor method is cheap enough and simple enough that you can try it and if you encounter resistance (pun intended) go to the VFD. Art You are so right on that theoratical stuff. Not sure if I understand everything though. Not that technical with electronics. But in Holland (I guess in Europe) it is very very common to use Steinmetz with clutchmotors. Even sewingmachines comming out of the factory have this. Only a working capacitor. No starter capacitor. Could it be because of the difference 110 volts 60 Hz vs 220 volts 50 Hz?? I even use it with hydraulic pums. Works perfectly without getting anything hot or even warm. It doesn't work with machines witch need a lot of torque al the time like meat mincers. If Steinmetz doesn't work, I use a VFD also. Sandy. Quote For heaven's sakes pilgrim, make yourself a strop!
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