We have extensive experience in providing "shore power" systems for 3-phase refrigeration equipment from ThermoKing and many other manufacturers. General refrigeration applications can be easily handled by a phase converter. This application category includes: freezers, walk-in coolers, chillers, air conditioners, heat pumps, ice makers, ice cream machines, and any other equipment that uses 3-phase hermetic refrigeration compressors.
Phase converters are able to operate any of these load types as effectively as any utility 3-phase line. The typical HVAC application uses an automatically controlled rotary phase converter, Type MA-A. The converter is switched on by the thermostat and runs only when the compressor is on. Converters for outdoor refrigeration units may be mounted adjacent to unit in an outdoor enclosure. Refer to Kay Industries for specific sizing and selection recommendations.
Critical Selection and Application Criteria:
Be sure to have adequate single-phase service. You must have at least 100 amps of single phase service for each 20 HP of connected 3-phase load at 230 volts. Verify with your utility company
Outdoor installation in unprotected areas may require weatherproof enclosure
An alternative for outdoor installations is the Type PI. It features a totally enclosed fan-cooled generator frame construction with a NEMA 3-R control and connection box. It can be installed outdoors without further weather protection.