Page 44 - Parker - AC890/AC890PX series

Application Profile

Energy Savings - Pump applications

Pumping station retrofit

reduces energy costs by

replacing eddy current clutch

Summary Benefits

The wastewater treatment plant in Rock Hill, South Carolina
turned to Parker SSD Drives when it needed to reduce • Significant reduction in energy
energy and replace an obsolete eddy current clutch system consumption
on three 200 HP waste water lift pumps. By connecting
the motors directly to the pumps, engineers were able to • Efficient speed control of pump drive
remove the obsolete and troublesome clutch systems which motors
had been controlling the flow of waste water.
• Reduced wear and tear of mechanical
AC890PX High Power Modular Systems Drives were components
installed in bottom entry configuration to provide stand-
alone control of the pumps. The integrated line reactors also • Reduced maintenance and increased
removed the need for expensive additional harmonic filters system availability
to be installed.
• Integrated 3% line reactor removing the
In addition to providing significant energy savings,
the AC890PX installation has also reduced the overall need for additional filtering
maintenance costs of the system by reducing the
mechanical stresses of the pumps during starting.

Parker SSD Drives Solution AC890PX High Power Modular Drive
• High power ratings, can be configured for
systems requiring 1MW and above
• Plug-in power modules for easy
replacement
• Top or bottom cable entry provides
flexibility in siting
• Available in 12 pulse, 18 pulse and AFE
configurations
• Available in 400 VAC, 460 VAC, 575 VAC,
and 690 VAC models
Worldwide Support
• Air-freightable plug-in power modules for
improved availability and support
• Configurable to meet local requirements

44