Here’s the release from the US Bureau of Reclamation:
The Bureau of Reclamation announced that it has awarded a $1 million contract to PAF Electrical, LLC, Oregon, on September 17 to replace nine existing variable frequency drives that will upgrade the Cahone, Dove Creek, Pleasant View and Ruin Canyon Pumping Plants near Cortez, Colorado.
“Replacing the variable frequency drives will increase the energy conservation where there is a need to vary the flow in distribution systems,” said Western Colorado Area Manager Ed Warner. “The new frequency drives will lessen the mechanical and electrical stress on the motors, reduces maintenance and repair costs and extend the life of the motor.”
The Dolores Water Conservancy District provides seasonal irrigation and delivers vital water to Montezuma and Dolores Counties as part of the Dolores Project which is owned by Reclamation and operated by the District. The contract provides upgrades for four pumping plants by replacing the nine existing variable frequency drives with modern drives which provides more reliability with increased flow flexibility.
The Pleasant View and Ruin Canyon Pumping Plants currently use medium 2400 VAC drives and motors that require the use of old technology and are significantly aged. To support the change in pump operating voltage to 480 VAC at these pumping plants, the equipment at each plant will include a new section of 5 kilovolt metal-enclosed switchgear, a new station service transformer, as well as new a distribution switchboard. New 480 VAC inverter duty motors will replace the four 2400 VAC motors on the existing pumps at those two plants and provide one spare. These new motors will be a hollow shaft design.
The Cahone and Dove Creek Pumping Plants were originally constructed using 480 VAC drives and motors. The contract will replace the old 480 VAC variable frequency drives.
For more information about Dolores Project, please visit: http://www.usbr.gov/projects/Project.jsp?proj_Name=Dolores+Project