METHOD OF TEST AND CONTROL OVER HYDRAULIC DRIVE Russian patent published in 1999 - IPC

FIELD: hydraulic drives of high-voltage sulfur hexafluoride switches. SUBSTANCE: invention specifically refers to drives of gas and hydraulic energy accumulators and to methods monitoring energy accumulation and control over this process. Method consists in switching on of motor of hydraulic pump if level of stored energy falls, in its switching off when initial stock of energy is achieved, in cutting in of proper interlocking equipment if level of stored energy drops below working one. These actions are carried out according to value of travel of piston of hydraulic accumulator with the aid of kinematic coupling of piston passing through hydraulic space of high pressure with mechanical electric contact device. EFFECT: increased accuracy and reliability of control over accumulation of energy in gas and hydraulic energy accumulators. 1 cl, 3 dwg