Engineering Calculators
Quick sizing tools for transformers, reactors and harmonic mitigation. Each one can carry its results straight into a spec sheet when you are ready for a quote.
Transformer kVA & Full-Load Amps
Three-phase and single-phase full-load current, and the size a load needs after growth margin and altitude derating.
Open calculator →Reactor %Z to mH
Convert line or load reactor percent impedance to inductance per phase, and back.
Open calculator →Harmonic Mitigation Selector
Find the IEEE 519 TDD limit for your supply and compare reactors, 18-pulse, passive and active filters. Guidance only.
Open calculator →Motor Lead-Length Filter Guide
Typical guidance on load reactors, dv/dt and sine-wave filters for long drive-to-motor cables.
Open calculator →Ready to send a requirement?
Fill in a spec sheet online. Only your name, company and email are required.
These calculators are for preliminary sizing and general guidance. They are not a substitute for engineering review; final ratings are confirmed by a qualified engineer and the manufacturer.