A surface water pumping station expects to cut the energy use of two submersible pumps by between 10 and 15 per cent following the installation of ABB variable-speed drives (VSDs). The VSDs also avoid the cost of installing a new transformer and improve the site's pumping system. Susworth Pumping Station, located in Lincolnshire, is managed by the Shire Group of internal drainage boards. The station, which discharges into the River Trent, uses the submersible pumps to transfer surface water run-off from the low-lying catchment, protecting people, property, agriculture and the aquatic environment. The pumps are rated at 65kW and 75kW, with a combined full-load current of 202A. Both pumps run at 950rpm. The pumping station's electrical supply is via a remote pole transformer rated at 100kVA. Because of the transformer's rating, only one pump could run at a time, even during periods of prolonged rainfall.
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