High-voltage gas-insulated switchgear with capacitive voltage divider for indicating contact position专利检索-电容分压器分压器控制系统专利检索查询-专利查询网

High-voltage gas-insulated switchgear with capacitive voltage divider for indicating contact position

阅读：483发布：2021-07-07

专利汇可以提供High-voltage gas-insulated switchgear with capacitive voltage divider for indicating contact position专利检索，专利查询，专利分析的服务。并且High-voltage metal-clad gas-insulated switchgear apparatus wherein an isolator switch is mounted in a gas-filled earthed casing to isolate one conductor part of the apparatus from the other, and an earthing switch mounted on the casing includes a movable contact member operable to engage and effect earthing of the isolatable conductor part by connecting the latter to the earthed casing. A measuring electrode mounted within the casing and insulated therefrom forms part of a capacitive voltage divider from which is derived a voltage the magnitude of which indicates whether the contacts of the isolator switch are open or closed.，下面是High-voltage gas-insulated switchgear with capacitive voltage divider for indicating contact position专利的具体信息内容。

权利要求

1. High-voltage metal-clad gas-insulated switchgear apparatus comprising a gas-filled earthed casing enclosing two rigid conductor parts arranged with the ends thereof in confronting spaced relation, an isolator switch including separable contact means connected respectively to said conductor parts for selectively electrically interconnecting said conductor parts or electrically isolating one such part from the other, an earthing switch mounted on said casing, said earthing switch including a movable contact member electrically connected to said earthed casing and which is actuatable into engagement with that conductor part which is isolatable by operation of said isolator switch thus to electrically connect the isolated conductor part to said earthed casing, and a capacitive voltage divider for deriving a voltage indicative of the position of said contact means of said isolator switch, said voltage divider including a measuring electrode mounted within said casing and electrically insulated therefrom, said electrode being disposed opposite said isolatable conductor part to be earthed and also spaced therefrom to establish one capacitor of saId voltage divider and being electrically connected to a measuring terminal of said voltage divider, the other capacitors of said divider being constituted by the capacities existing respectively between said measuring electrode and said casing, between said measuring electrode and each of said rigid conductor parts and between the separable contact means of said isolator switch.

2. Switchgear apparatus as defined in claim 1 wherein a voltmeter having a high resistance input characteristic is connectible to said measuring terminal of said voltage divider.

3. Switchgear apparatus as defined in claim 1 wherein said contact means of said isolator switch comprises a movable contact member mounted in the end of one of said rigid conductor parts and a first annular contact member mounted in the end of the other said conductor part, and wherein said movable contact member of said earthing switch is engageable with a second annular contact member mounted on said isolatable conductor part orthogonally to said first annular contact member.

4. Switchgear apparatus as defined in claim 3 wherein said voltage measuring electrode has an annular configuration and surrounds said movable contact member of said earthing switch which is movable through said electrode from a retracted position adopted for a closed position of said isolator switch to an advanced position adopted for an open position of said isolator switch thereby to engage and thus earth said isolatable conductor part.

5. Switchgear apparatus as defined in claim 1 wherein said earthed casing includes a laterally directed tubular outlet located opposite to said isolatable conductor part and on which said earthing switch is mounted, and wherein said voltage measuring electrode has an annular configuration and is mounted at said tubular outlet, said annular voltage measuring electrode surrounding said movable contact member of said earthing switch and said movable contact member being movable through said annular electrode from a retracted position adopted for a closed position of said isolator switch to an advanced position adopted for an open position of said isolator switch thereby to engage and thus earth said isolatable conductor part.

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High-voltage gas-insulated switchgear with capacitive voltage divider for indicating contact position

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