Transformer kVA Calculator
Estimates apparent power and real power for a single-phase or balanced three-phase transformer load from line voltage, current, phase, and power factor.
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Transformer kVA, primary current, secondary current, impedance, inrush, K-factor, generator sizing, and UPS capacity.
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Transformer Current Calculator
Estimates transformer primary and secondary line current from kVA, primary and secondary voltage, and the selected phase model.
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Transformer Impedance Calculator
Converts transformer percent impedance to per-unit and ohmic values, then estimates transformer-limited current on the selected voltage and phase base.
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Power Factor Correction Calculator
Estimates required correction kVAR and apparent-current reduction from kW, current power factor, target power factor, voltage, and phase.
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Harmonic Distortion Calculator
Estimates THD and each listed harmonic as a percentage of the fundamental from entered fundamental and harmonic RMS values.
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Generator Size Calculator
Estimates planning running and surge ratings, plus an apparent-power basis, from running watts, starting loads, power factor, and margin.
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Capacitor Bank Size Calculator
Estimate required power-factor correction kVAR and capacitance per phase from real power, current and target power factor, system voltage, frequency, and capacitor connection.
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Buck-Boost Transformer Calculator
Estimate buck-boost winding and adjusted kVA from supply and target voltage, load current, phase arrangement, and a planning multiplier. Final transformer selection remains a manufacturer and installation review.
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