Im just trying to better understand how to know if it is high or low voltage when wiring a motor. This apparently involves the windings and associated wire configuration.
A three phase motor is more efficient than a single phase motor because of the peculiarities of alternating current ac.
Low voltage vs high voltage motor wiring.
Sometimes you apparently need to rewire a 3 phase motor for low voltage 230v as opposed to 460v in order to connect the motor to a vfd.
I dont make a habit of wiring motors wrong but have certainly done it a few times before.
The question was about what would happen if high voltage was applied to the low configuration of a dual voltage motor 03 30.
Low voltage vs high voltage motor whhobi electrical op 29 sep 17 1402.
If i have a question that asks how to wire up a motor that has available leads of 208 volt 3 phase.
However this places all home electrical wiring in the low voltage class or lower.
Old field guy.
Both high and low voltages can cause premature motor failure as will voltage imbalance.
Low voltage vs high voltage motor unclebob.
The economic loss from premature motor failure is devastating.
Ok if you have a dual voltage motor with the windings connected for low voltage operation but hook it up for high voltage.
In most cases the price of the motor itself is trivial compared to the cost of unscheduled shutdowns of processes.
Wire a three phase motor in either a wye configuration or a delta configuration in high or low voltage using a nine lead set up.
That brought in a separate feed and a single outdoor metal clad switchgear unit for a single motor just to avoid the voltage sag issues a low voltage motor would introduce into an existing system.
Operating a motor at the outer limits of its voltage requirements reduces its efficiency and causes premature failure.
The iec ratings for voltage list high voltage devices and lines as anything over 1000 volts for ac circuits and 1500 volts for dc circuits while low voltage circuits are between 50 and 1000 vac or 120 1500 vdc.
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