| 摘要 |
Partial discharge coupler (26', 26") for installation between a conductor (20, 22, 24) carrying a high voltage, low frequency alternating current signal and a first ground (32) for detecting partial discharges in the conductor, the partial discharge coupler comprising:
a frequency dependent network (30) having a first filter component (42), a fuse component (44) and a load component (46), connected in series, wherein:
the first filter component is configured to pass high frequency partial discharge pulse signals to the load component;
the fuse component is configured to provide overload protection;
the load component defines a first node (48) and a second node (50), the second node being configured to couple to the first ground; and
a connector socket (70) having a first socket connection (72), a second socket connection (74) and a shorting connection (76), wherein:
the shorting connection is configured to electrically connect/disconnect the first socket connection to/from the second socket connection; and
a frequency selective coupling component (34).
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