The multi-type pump configuration equipped with one invert scheme is suitable for the system to operate over a wide range of flow and head at different time periods. Its optimization may be the result of relatively low regulation capability. As a result. a synchronous switch control model was adopted to overcome this defect and to save further energy operation of the pump system. https://www.ealisboa.com/top-save-RE-DESIGNED-Strikketoy-oppbevaring-Prosjekt-27-Sort-100-Skinn-great-save/