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Showing results for tags 'Soft Starter'.
Found 4 results
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Danfoss recently ran a Webinar comparing VFDsand Soft Starters. https://www.gotostage.com/channel/7526e1b2d5884c308313b1d1c4597d91/recording/d41f0016e709441da8cb955a63eeaafe/watch?source=CHANNEL
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For fixed speed applications, provided that the fixed speed is equal to the line speed, there will not be energy savings when a VFD is used compared to a soft starter. -
The Danfoss MCD500 series soft starters have reached end of life and they have ceased production, to be replaced by the Danfoss MCD600.
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Hi; Hopping that every one is fine with good health. Many years passed to Log-in. Now need help on an application where we have installed soft starter. We have a trim waste blower at Corrugator machine which has a 380V, 30KW, 4pole AC motor which drives an impeller by the mean of V-belts with double of motor speed. Previously motor was running by star delta starter. As we can not go beyond 6-7 start/stop per hour for such kind of load, so during normal operation of corrugator, if machine was stopped for some reason, trim waste blower was not stopped. As we calculated that if we stop the blower on each machine stop and start on machine start, we can save energy. So we have installed soft starter 37KW Schneider ATS01N272Q. But we have observed that when blower is start, current goes up to 272A and remains the same for almost 3-4sec, after that current starts dropping and stays at 42A (motor coils connected in delta). The total time which blower takes from zero to max speed is around 6-8sec. We have set the initial voltage around 260v. We always used VFD to control the speed and never used soft starter, so dont have idea about correct operation of soft starter. So, please guide me on following points; Is above mentioned condition normal? How many times can we start/stop the motor in an hour by soft starter?
