Oh boy vevor, good luck. I am dealing with them right now. Have their crane scale and a bunch of lines on the LCD display stopped working. They actually told me to " find a local technician" to fix it and they would reimburse me. I said no way, then their next offer was $60 (it's $200).....ummm what part of "everything we sell has a 12 month warranty" am I not understanding??
Luckily for me I have nearly $0 invested. I did purchase a 240 outlet but that's it so far. I had the plug end and some 16ga already. That part is done. Now if it would just warm up a bit more.... middle of the week they say. Might tough it out though. 40's isn't too bad.
Ahh interesting so if the ratio stays the same then the OP's motor would perform the same as at 50hz? He'd have to run it off 265V somehow.
No. You were asking about a 400V motor. In his case he has a motor rated for the applied voltage. A 220V 50Hz motor can run on 60Hz it will just run faster. It doesn't always work the other way ie. a 60Hz motor may not like 50Hz so well.
I'm inclined to agree with you.
It’s not just the Chinese, I hooked up a brand new Italian made CNC machine a couple of months ago. Worked about a week, then the X axis sensor quit working. The company that sold it to them swore up and down it was a shorted sensor wire, that someone had stepped on the wire trolley in the back of the machine. They would not send anyone out to look at it. They wanted an electrician to check the wiring, but absolutely do not remove the sensor. Sensor had two outputs, both were showing contacts closed regardless of position. Pulled the wires off the sensor, wiring checked perfect. A month later, they decided to finally send a new sensor. Totally wrong sensor! But since I was able to see how the sensor worked, I figured out what was wrong with the old one. They had an adjustment screw on both sets of contacts that fine tuned when they make and break. The block that pushed the plungers down when the machine reached its end point, was adjusted too tight, and wore grooves into the sensor damaging it. Re-adjusted the screws on the sensor, and it started working again. They were flying in a tech from Germany to look at it, and since they weren’t reimbursing the owners for my time, I changed it back. The owner said they didn’t even attempt to troubleshoot it, they just replaced the sensor with the correct one they brought with them. After several months, they finally was able to use the new machine again.
Fix it again Tony!
Interesting.... will keep that in mind!
It still going to run about 17-18% faster because of the frequency, which will cause the centrifugal fan to demand more power at that speed (if nothing is changed there). Now if this motor were designed/intended to be run at that frequency then it might be ok, but it will not give same performance at both frequencies.
Theoretically if the OP had some way to run his motor at 265 Volts (using a buck/boost or variac) it would perform the same right?
It would still run faster because an AC motor's speed is determined by frequency also, you would be pushing the limits of the motor giving it that much voltage using a normal motor starter. There is some crazy stuff you can do with a VFD where you set the motor up for 240V and somehow program the voltage to run up as high as 480V but I have never seen it in real life.
For the most part to do this with a typical general purpose motor you also would need to run it at 120 Hz and would double the speed in the process. It still is capable of delivering same ft/lbs per second it will just be doing it at a higher speed, but if you were driving a centrifugal fan or pump the load imposed on the impeller increases exponentially as speed increases, presuming infinite carrying capacity of the conveying ducts or piping.
More properly, it increases as the cube of the speed.
Well here is the first definition from the dictionary:
Just imagine the UK is one of 5 countries on earth to use the 230V 50hz system and the rest of world standardized on the US 60 hz system.
