JPH0421983U

JPH0421983U -

Info

Publication number: JPH0421983U
Application number: JP6234190U
Authority: JP
Priority date: 1990-06-13
Filing date: 1990-06-13
Publication date: 1992-02-24

Description

[Brief explanation of the drawing]

第１図は三相一括形計器用変圧器の耐電圧試験
に用いる本考案の切換装置の実施例の回路図、第
２図は第１図の回路図に対応する実施例の概略断
面図、第３図は第２図の実施例の動作態様を説明
するための概略断面図である。１……単相ブツシング、２……単相電源、４…
…容器本体、５……単相スペーサコーン、６……
接続導体、７ｕ〜７ｗ……固定コンタクト、８ｕ
〜８ｗ……可動接触子、１０ｕ〜１０ｗ……操作
機構、１０ｕ４，１０Ｖ４……操作レバー、１１
ｕ〜１１ｗ……中継端子、１６ｕ〜１６ｗ……接
地コンタクト、ＰＴ……三相一括形計器用変圧器
。 FIG. 1 is a circuit diagram of an embodiment of the switching device of the present invention used for withstanding voltage testing of three-phase integrated potential transformers, and FIG. 2 is a schematic cross-sectional view of an embodiment corresponding to the circuit diagram of FIG. 1. FIG. 3 is a schematic sectional view for explaining the operation mode of the embodiment shown in FIG. 2. FIG. 1...Single-phase bushing, 2...Single-phase power supply, 4...
...Container body, 5...Single-phase spacer cone, 6...
Connection conductor, 7u~7w...Fixed contact, 8u
~8w...movable contact, 10u~10w...operation mechanism, 10u4, 10V4...operation lever, 11
u to 11w...Relay terminal, 16u to 16w...Grounding contact, PT...Three-phase integrated instrument transformer.

Claims

[Claims for Utility Model Registration] (1) One bushing for voltage application connected to a single-phase power supply and a voltage application switching mechanism for selectively applying the output from the bushing to each phase of a multi-phase electric device. In the switching device for testing multiphase electrical equipment, the voltage application switching mechanism has a number of switches equal to the number of phases of the multiphase electrical equipment, each of which is provided corresponding to each phase of the multiphase electrical equipment. The contact switching mechanism includes a fixed contact electrically connected to the bushing, a ground contact in a grounded state, and a relay electrically connected to a corresponding phase of the multiphase electrical equipment. A multiphase electrical equipment test comprising a terminal, a movable contact that selectively connects the relay terminal and the fixed contact or the ground contact, and a movable contact operating mechanism that operates the movable contact. switching device. (2) The movable contactor operating mechanism includes an operating lever that is linearly moved between an energized position and a grounded position;
and a linear movement mechanism that linearly moves the movable contact in accordance with the movement of the operating lever, and the movable contact moves between the relay terminal and the fixed contact when the operating lever is in the energized position. 2. A polyphase electrical equipment testing device according to claim 1, wherein the relay terminal and the ground contact are connected to each other when the operation lever is in the ground position. Switching device.