K-Rated Transformer
Today's modern electronic, electric components and circuitry such as computers, copiers, printers, fax machines and display terminals utilize switching mode power supplies for their operation. These switching mode power supplies are non-linear in nature and unlike a linear load which uses current from the power source continuously over the sinusoidal cycle, a non-linear load draws current in pulses from the power source thereby creating harmonic distortion.
A K-factor rated transformer is designed to handle a degree of harmonic load currents without overheating. The K-rating number of the transformer (1, 4, 9, 13, 20) is in indication of the amount of harmonic current the transformer is capable of handling.
Product Scope
- K-Factor 1: Motors, Incandescent Lighting, Resistance Heating, Motor Generators (without solid state drives)
- K-Factor 4: HID Lighting, Induction Heaters, Welders, UPS with optional input filtering, PLC and solid state controls
- K-Factor 13: Multiple receptacle circuits in health care facilities, UPS without optional input filtering, Production or assemble line equipment, Schools and Classroom facilities
Standard specs
- Meets DOE-2016 standard Part 431, Subpart K for energy efficiency
- Meets NRCAN 2019 requirements, C802.2.18 Standard for energy efficiency
- Built in accordance with NEMA, ANSI, UL and CSA standards
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