IEVref: 131-11-44 ID: Language: en Status: Standard Term: reactive power Synonym1: Synonym2: Synonym3: Symbol: Q Definition: for a linear two-terminal element or two-terminal circuit, under sinusoidal conditions, quantity equal to the product of the apparent power S and the sine of the displacement angle φ $Q=S\mathrm{sin}\phi$Note 1 to entry: The reactive power is the imaginary part of the complex power $\underset{_}{S}$, thus $Q=\text{\hspace{0.17em}}\mathrm{Im}\text{\hspace{0.17em}}\underset{_}{S}$. Its absolute value is equal to the non-active power, thus $|Q|={Q}_{\sim }$.Note 2 to entry: The coherent SI unit for reactive power is voltampere, VA. The special name var and its symbol var are also used. See 131-11-45. Publication date: 2013-08 Source: Replaces: Internal notes: CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: