VARIABLE FREQUENCY DRIVES
VARIABLE TORQUE VFDS Requirements: • VFD speed must be automatically controlled by differential pressure, flow, temperature, or other variable signal. • VFD must be installed on a centrifugal or axial flow pump or fan, i.e., a variable torque load. • Staged air volume systems (using a VFD to achieve two-speed fan control on a rooftop unit) and units installed only to allow soft starts, are not eligible. • If VFD is installed on a motor greater than 500 hp , provide the estimated load profile for the piece of equipment along with the motor nameplate efficiency (motor specification or nameplate photo). Application Measure Description Code Rebate Unit
VFD, Chilled Water Distribution Pump
PS2726* PS2640* PS2641* PS2648*
$55 $55 $55 $55 $55 $20 $20 $45 $45 $45 $45 $45 $15 $15
hp hp hp hp hp hp hp hp hp hp hp hp hp
VFD, Boiler Draft Fan VFD, Cooling Tower Fan
Retrofit
VFD, Process Pump VFD, Process Fan
PS2647* PS10436* PS10434* N-PS2726* N-PS2640* N-PS2641* N-PS2648* N-PS2647* N-PS10436* N-PS10434*
VFD, Process Pump (500-1,999 Annual Operating Hours) VFD, Process Fan (500-1,999 Annual Operating Hours)
VFD, Chilled Water Distribution Pump
VFD, Boiler Draft Fan VFD, Cooling Tower Fan
New Construction
VFD, Process Pump VFD, Process Fan
VFD, Process Pump (500-1,999 Annual Operating Hours) VFD, Process Fan (500-1,999 Annual Operating Hours)
hp * Complete Table H1 on the Supplemental Data Sheet. If VFD is installed on a motor greater than 500 hp, also fill out table H2.
CONSTANT TORQUE VFDS Requirements: . • VFDs must be installed on constant torque equipment (e.g., conveyors, positive displacement pumps, extruders, mixers, crusher/shredders). • Equipment set manually at 100% load for 100% hours are not eligible. • If VFD is installed on a motor greater than 500 hp , provide the estimated load profile for the piece of equipment along with the motor nameplate efficiency (motor specification or nameplate photo) . Application Measure Description Code Rebate Unit Retrofit VFD, Constant Torque PS3280* $50 hp New Construction VFD, Constant Torque N-PS3280* $40 hp * Complete Table I1 on the Supplemental Data Sheet. If VFD is installed on a motor greater than 500 hp, also fill out table I2.
CUSTOM PROJECT IDEA Talk to your Energy Advisor about custom incentives that may be available for reducing motor horsepower in addition to equipping the motor with the VFD. For example, an oversized process pump will be replaced with a properly sized pump and equipped with a VFD.
18
Powered by FlippingBook