| http://www.w3.org/ns/prov#value | - The relationship is as follows: Apparent Power=IRMSVRMS PowerFactor = Power ApparentPower = Power I R ??? ??? M ??? ??? S ??? V R ??? ??? M ??? ??? S [0199] The phase angle (??) between voltage and current can then be calculated as follows: ??=arc cos(Power Factor) [0200] The device of the present invention can also determine whether the current is leading or lagging the voltage by examining the s
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