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renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678
Posted: 08:26am 10 Sep 2018
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Ahh, my wife drives around and around at car parks to get close to the entrance, THEN goes to a friggin gym to go on a bloody treadmill !!!!! WTF??
Most useless contraption ever. Cheers Caveman Mark Off grid eastern Melb
Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498
Posted: 08:31am 10 Sep 2018
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Typical speed reduction is down to 50%, it does not do the same as gearbox but there are plenty of occasions you don't need enough torque to twist the shaft off your chuck.There are only 10 types of people in the world: those who understand binary, and those who don't.
Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498
Posted: 08:44am 10 Sep 2018
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You talking about your wife or the treadmill?There are only 10 types of people in the world: those who understand binary, and those who don't.
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904
Posted: 09:12am 10 Sep 2018
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That motor label says three phase and lower down 220V???? How is it connected inside that box below the label?Klaus
Madness Guru Joined: 08/10/2011 Location: AustraliaPosts: 2498
Posted: 09:18am 10 Sep 2018
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It is wired Delta as per the Conn part on the label, it was Star it would conventional 3 phase 415V.There are only 10 types of people in the world: those who understand binary, and those who don't.
Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406
Posted: 04:33pm 10 Sep 2018
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Yup. I had a Chinese motor exactly like that, they do exist.
If the treadmill is powered from 220/240v single phase (as a normal household appliance would be) there is no way the VFD is going to be able to source 415 volts phase to phase for the motor. So its likely wired for 220v delta.
Brazil is one place I know of for sure that has 127 volts phase to neutral and 220 volts phase to phase. On the PTS Flow Bench Forum, I remember having a very long discussion with a guy living in Brazil about motor voltages there.
Modern suburbs in Brazil are all 220v and each home sit between two phases supplied from the street. There is no active and neutral, but two actives. Its a weird system somewhat like the American power distribution system, but with differences.
In very poor villages way out in the bush, its more common for each house to be wired active and a neutral and run with all 127 volt appliances. Strange but true.
Edited by Warpspeed 2018-09-12Cheers, Tony.
Boppa Guru Joined: 08/11/2016 Location: AustraliaPosts: 814
Posted: 02:58am 11 Sep 2018
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Columbia is the same Warpspeed, A friend was having a semi grid/battery solar inverter system installed there and it caused some issues at first as the inverter had an internal N/E connection (which was unusual in itself) and the combination was NOT happy to put it mildly (as in breakers blowing, inverter blowing etc etc)
Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
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