// multi-utility computation suite · offline · instant · precise
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eng.generator-reactive-power Calculator
Calculates generator reactive power capability, power factor, and armature current from real power output and excitation level. Generators operating at leading power factor (under-excited) have limited reactive capability — the capability chart defines safe operating limits.
Inputs
Apparent Power Kva
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Power Factor
A multiplier applied in the calculation.
Terminal Voltage Kv
Electric potential difference (V). Drives current through a circuit. Household: 120 V (US) or 230 V (EU/UK).
Excitation Factor
Reference formula or conversion factor shown for context.
Results
real power P (kW)
Reference formula or conversion factor shown for context.
reactive power Q (kVAR)
Voltage in kilovolts (kV). 1 kV = 1,000 V. Used for high-voltage transmission lines and industrial equipment.
armature current (A)
Electric charge flow rate (A). Governs wire sizing — too much current causes dangerous heating. Fuses protect circuits from overcurrent.
power factor angle φ (°)
A dimensionless multiplier applied in the calculation.
S = P + jQ
Reference formula or conversion factor shown for context.
over-excited
Reference formula or conversion factor shown for context.