Transition processes during the start-up of the pumping unit of happ

The transition processes of the centrifugal pump in hydro accumulation power plant (HAPP) are studied article. reliability pumping system is increased by correct selection parameters process when regulating operation units. This prevents vibration damage and erosion. Based on results obtained calculating hydraulic shock pressure loss together, failures equipment network can be avoided. graphs allow you to choose right electric motor for unit, taking into account required water supply. Technical economic efficiency achieved choosing a rated unit. Constructing graphic descriptions pump, determined magnitude effect grapho-analytical method.