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  1. pheel

    Speed VS load

    sorry i guess I could have written more information. I was reading the amp on the drive display. This was a 230V motor, DC bus was about 280V. The motor is rated 5.75A. Is it correct to think without a load, most of the current is reactive and by putting a load, this current will then be an...
  2. pheel

    Speed VS load

    Hi everyone, Were testing a small system at our shop. We had a small powerflex4 drive with a 1.5 HP SEW motor and a gearbox (but no real load). I didn't really understand but we had 4A at 60HZ, 5A at 30HZ and 4A at 10HZ. The drive was set to constant torque. Can someone explain that to me ...
  3. pheel

    electronic and magnetic ballast for fluorescent bulb

    i will verify with the manufacturer, thanks
  4. pheel

    electronic and magnetic ballast for fluorescent bulb

    Will using let say 40W electronic ballast with a 20W fluorescent bulb cause any problem ? Will it work fine ? With magnetic ballast ? thanks
  5. pheel

    VFD life expectancy

    Our plant is in its 11th years of existence. As i can see, 25% of all our VFD had failure. We do use Allen-Bradley and Toshiba. Of what i can figure out is that 12-13 years seems to be the average life of a VFD. What do you think of that? Does someone disagree ?

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