Hydraulic pumps and pressure regulation pdf download
Abstract : A hydraulic pump takes oil from a tank and delivers it to the rest of the hydraulic circuit. In doing so it raises oil pressure to the required level.
Hydraulic pumps are generally driven at constant speed by a three phase AC induction motor rotating at 1500 rpm in the UK (with a 50 Hz supply) and at 1200 or 1800 rpm in the USA (with a 60 Hz supply).
Often pump and motor are supplied as one combined unit. As an AC motor requires some form of starter.
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