You are watching: 230/460 volt 3 phase
It way it can be wired for either 208V or 480V 3 phase. 3 phase tons are rated for the phase to step voltage and don't use a neutral. The phase to neutral voltage is only supplied for solitary phase loads.
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Think that a 208 voltage 3 phase system as a compatibility approach so that you have the right to have the standard 120 VAC come ground. 208 3 phase is a why (Y) system that is you have actually a neutral in ~ ground potential.I look at 240 or 480 volt equipment as "industrial" in the the are frequently delta connected systems. Yet they are not always delta connected, a Y connected system will have actually 277 volts to ground and in many locations the lighting equipment will be solitary phase with 277 volts to ground. As much as motors go most three phase electric motors are rated 240/480 volts yet as you deserve to see they deserve to be rated with an extended range. For stuff shipped globally the electric motors will frequently have other ratings for different frequencies and voltages that the motor deserve to run at.In modern-day plants you deserve to have countless systems. For example there will be a 208 Y mechanism for powering user lots such together coffee pots, desktop computers, and other 120 outlet loads. Most likely there will be a 480 device of some kind for "industrial loads".All about Circuits does a decent introduction: https://www.allaboutcircuits.com/textbook/alternating-current/chpt-10/three-phase-y-delta-configurations/