For Students · Substation Grounding
Substation Grounding for an RLC circuit
Built for students learning it for a class or exam. See the concept move instead of memorizing formulas — and check your homework intuition. Simulate an RLC circuit live below — adjust the inputs and watch it respond, right in your browser.
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Three-phase power delivers energy on three conductors carrying sinusoids 120° apart, so total power is constant and motors self-start. Line and phase voltages differ by √3, and real power is P = √3·V_line·I·cosφ. The power factor cosφ measures how much current actually does useful work.
Data Inspector
Phase voltage231 V
Real power P12.5 kW
Apparent S13.9 kVA
Reactive Q6.0 kVAR
Governing equation
Reading this result: Real power P = √3·V_line·I·cosφ = 12.5 kW, trailing the 13.9 kVA apparent power by the angle φ = 26°.
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