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Abbreviation For 3 Phase. Version 0.7 had corrections and contributions by marianne and nancy dyson. Basics 10 480 v pump schematic :

ATV61 5,5 kW 7,5HP 480V 3 phases EMC IP20 with graph term
ATV61 5,5 kW 7,5HP 480V 3 phases EMC IP20 with graph term from armani-engr.com

What is the abbreviation for the electrical term phase? Note that the two 120 v sources are not opposite in phase, and will not give 240 v. Basics 8 aov elementary & block diagram :