TEST EQUIPMENT AND METHOD FOR OIL FILLED TRANSFORMER SUDDEN PRESSURE RELAY

摘要

PURPOSE: A test apparatus and a method for an oil filled transformer sudden pressure relay are provided to estimate the state of the sudden pressure relay by changing the pressure of a work according to change rate. CONSTITUTION: The device is comprised of a control panel(1), a motor(2), a reducer(3), a screw jack(4), a pressurizing cylinder(7), a relief valve(10), a valve(11), a pressure detection part(8), and a sensor(6). The driving force of the motor is transferred to the screw jack through the reducer. The screw jack moves a driving shaft forward and backward The relief valve prevents an oil pressure from increasing excessively.