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A DEVICE FOR MONITORING PARTIAL DISCHARGES IN AN ELECTRIC HIGH-VOLTAGE APPARATUS OR HIGH-VOLTAGE EQUIPMENT
A DEVICE FOR MONITORING PARTIAL DISCHARGES IN AN ELECTRIC HIGH-VOLTAGE APPARATUS OR HIGH-VOLTAGE EQUIPMENT
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机译:用于监视电气高压设备或高压设备中的局部放电的装置
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摘要
A device for monitoring partial discharges in high-voltage equipment (1), which has a high-voltage bushing (21, 22, 24) with a capacitive test tap (31, 33, 34). The device has an inductive current transducer in the form of a measuring coil (4) arranged around the high-voltage bushing, as well as signal-processing members (SB) which, for detection of partial discharges, are supplied with measurement signals from the coil (u) and from the test tap (i). The device further comprises a current path (36) which is coupled to the test tap and arranged outside the coil and which, together with the conductor (24) of the bushing, forms a current loop around the coil for signals (i) coming from inside the apparatus and originating from partial discharges.
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