ABB Automation Inc.: electronic bypass
The company’s microprocessor-controlled electronic bypass is now available in a NEMA 1 or NEMA 12 configuration up to 400 hp. Suggested applications include single-motor hvac fans and pumps. The bypass features voltage tolerance of +30%; input power single-phase protection in both drive and bypass modes; a membrane keypad for bypass operation and status display; fault-reset button for selectable Class 20 or Class 30 electronic overload; multiple inputs and relay outputs; and selectable manual or automatic transfer from drive to bypass.
—ABB Automation Inc.