Fluidlexikon

Intermittent operation

Intermittent duty is one of the other Nominal mode of operation denoted in the international standard IEC 60034-1.

Hydraulic power packs work in intermittent operation if they are switched on and off by a process-dependent signal so that hydraulic energy is available exactly when the process needs it. A pressure signal is generally used for this: this means that at an upper pressure point, the power pack switches off, the pressure falls below a lower value, and then the power pack switches back on again. The hydraulic energy is often temporarily stored in a Hydraulic accumulator, which provides peak flow rates and means that the power pack switches on less frequently. Intermittent operation offers the great advantage of significantly cheaper energy consumption in many application cases, compared with all other types of duty.

Intermittent operation is comparable with start-stop systems in motor vehicles.

Suitable HAWE products: