Variable frequency (speed) drive and controls is an effective, and efficient, way to reduce operating costs. These efficiencies can be seen in home aquifer, municipality and farm irrigation systems, to name a few. When a single pump is required to operate over a range of flow rates and pressures, standard procedure is to design the pump to meet the greatest output demand of both flow and pressure. For this reason, pumps are often oversized and they will be operating inefficiently over a range of duties. Variable frequency drives and controls present an opportunity to reduce energy requirements by using control […]
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