JPS6351526U

JPS6351526U -

Info

Publication number: JPS6351526U
Application number: JP14482786U
Authority: JP
Priority date: 1986-09-19
Filing date: 1986-09-19
Publication date: 1988-04-07

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例によるＣＴ保護装
置と周辺回路、第２図は従来のＣＴ周辺回路であ
る。図において、１はＣＴ、２は主回路動体、５は
ＣＴ２次側機器、６はラツチ形補助リレー、７〜
１０はリレー接点、１１は押ボタンスイツチであ
る。なお、図中同一符号は同一、又は相当部分を
示す。 FIG. 1 shows a CT protection device and peripheral circuit according to an embodiment of this invention, and FIG. 2 shows a conventional CT peripheral circuit. In the figure, 1 is a CT, 2 is a main circuit moving body, 5 is a CT secondary side device, 6 is a latch type auxiliary relay, 7-
10 is a relay contact, and 11 is a push button switch. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of claims for utility model registration] (1) CT installed on the main circuit busbar and this CT
CT secondary side equipment connected to the secondary side of
A voltage detection means connected in parallel with the T secondary side equipment, a shorting means for shorting the CT secondary side in response to an abnormal voltage detection operation of the voltage detection means, and a holding means for holding the shorting means in a short-circuited state. , and a release means for releasing the holding by the holding means. (2) The other A contact of the latch type voltage auxiliary relay,
The CT protection device according to claim 1, characterized in that a signal is output to the outside. (3) The CT protection device according to claim 1, which is characterized in that a voltage is applied from the outside to a reset coil of a latch type voltage auxiliary relay to release the latch.