Motor control for storm flow waste water pumps
A
Cutler-Hammer product story
Edited by the Engineeringtalk editorial team
Apr 3, 2001
East of Scotland Water is to use a Cutler-Hammer F660 Fully Type Tested Motor Control Centre to help safely handle excess waste water resulting from storm flows throughout the area
East of Scotland Water (ESW) is to use an F660 Fully Type Tested Motor Control Centre (MCC) from the Eaton Corporation, the world-leading manufacturer of Cutler-Hammer industrial controls and circuit protection equipment, to help safely handle excess waste water resulting from storm flows throughout the area.
Leading electrical control equipment supplier, Varcol Electrical Services Ltd, won the order to supply the MCC, which will provide powerful motor control for three 110kW pumps at ESW's Cardenden storm waste water tanks, constructed as part of ESW's ?322 million Watermark initiative to improve coastal waters and rivers.
The process will be fully automated using a Programmable Logic Controller (PLC) and user-friendly Human-Machine Interface (HMI), increasing efficiency and reliability.
All excess storm flow is diverted into a 7000 cubic metre retention storage tank by the three 14.5 metre-long Archimedes screw pumps and returned to the network once the storm flow abates.
The flow is then ultimately fed to the Levenmouth Waste Water Treatment Works where ESW is investing ?45 million to provide secondary waste water treatment, as well as ultra-violet treatment during the bathing season.
The order for the process Motor Control Centre, which included 12 columns of F660, was won by Varcol Electrical Services following a competitive tendering process.
David Latto, Project Sponsor for East of Scotland Water, said: "The Cutler-Hammer equipment from Eaton will contribute greatly to our capability to deal with storm surges and excess rainfall, significantly improving the environment and the quality of water in the main river in the region, the River Ore.
Eaton's Cutler-Hammer MCC, through Varcol, was a fully-packaged solution that not only impressed us in terms of performance, flexibility and reliability, but also provided a very-cost effective option.
The Cardenden project forms part of ESW's Watermark initiative to improve the quality of coastal waters and rivers in the region, and the Cutler-Hammer equipment is an important step in realising this." Eaton's Cutler-Hammer F660 Motor Control Centre is a totally type tested assembly complying with BS EN60 439-1 in conformance with the Low Voltage Directive.
The product is rated from 600 to 4,000 Amps and 25kA for one second, 50kA for one and three seconds, and 80kA for one second.
Sections are available in either fixed or withdrawable construction and standard ingress projection is IP 54 with separation available up to Form Four type seven.
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