OUT-DOOR TYPE METERING OUT-FIT (MOF)HAVING ELECTRONICS TRANSFORMER WITH AUXILIARY POWER SUPPLY DEVICE & PD DETECTION SENSOR

摘要

An outdoor type MOF(Metering Out-Fit) having an electronic transformer with an auxiliary power supply device and a PD(Partial Discharge) detection sensor is provided to reduce an installation space by integrally embedding the auxiliary power supply device in the MOF. An auxiliary power supply device has an auxiliary power supply capacitor and a power supply transformer, and is formed at one side of an EVT(Electronic Voltage Transformer). The auxiliary power supply capacitor has a main capacitor and a voltage dividing capacitor parallel connected between a high voltage side conductor(12) for input/output connection and a ground. A PD(Partial Discharge) detection sensor is formed at the opposite side of the auxiliary power supply capacitor on the basis of an ECT(Electronic Current Transformer), and is parallel connected between the high voltage side conductor and a secondary output ground terminal.