Shop K-factor transformers designed for electrical systems supplying nonlinear loads that produce harmonic currents. These transformers are commonly used with electronic power supplies, variable-frequency drives, computers, communication equipment and other loads that can increase transformer heating beyond conventional linear-load conditions.
Compare K-factor transformers by K-rating, input voltage, output voltage, phase, kVA capacity, enclosure and temperature rise. Select the transformer based on the harmonic characteristics of the connected load and the requirements of the electrical system.
Nonlinear electrical loads draw current in a nonsinusoidal manner and can create harmonic currents that increase transformer losses and heating. K-factor transformers are designed to accommodate specified levels of harmonic loading while supplying the required voltage and capacity.
The appropriate K-rating depends on the harmonic characteristics of the connected equipment. A higher K-factor does not automatically make a transformer better for every application; the selected rating should match the actual load profile and electrical design requirements.
Standard transformers are generally selected for conventional linear loads. K-factor transformers incorporate design features intended to manage additional heating caused by harmonic currents. They do not eliminate harmonics from the electrical system; instead, they are designed to tolerate specified harmonic loading.