Engineered option packages for the VLT 2800 adjustable speed drive are available. The drive is designed to provide full-featured performance for hvac applications at a cost below full-featured drives, says the manufacturer. The option packages can be configured for two- or three-contactor bypass, circuit breakers, drive input fuses, or drive disconnect switches. Additional options include 3% line reactors, auto bypass, common run/stop, bypass undervoltage protection, hand/off/auto selector switches, and manual speed potentiometers.
Danfoss Graham, division of Danfoss Inc., 8800 W. Bradley Rd., P.O. Box 245041, Milwaukee, WI 53224-9541; 414-355-8800; 414-355-6117 (fax); email@example.com (e-mail); www.grahamdrives.com (website).