JPS6096942U

JPS6096942U - Equipment protection device against abnormal voltage

Info

Publication number: JPS6096942U
Application number: JP18664783U
Authority: JP
Inventors: 平松　祥孝
Original assignee: 株式会社昭電
Priority date: 1983-12-02
Filing date: 1983-12-02
Publication date: 1985-07-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の異常電圧に対する機器保護装置の一例を
示す回路図、第２図１〜３はサージの波゛　　　形例で
、図１は正極性で単極性のサージ、図２は負極性で単極
性のサージ、図３は双極性のサージを示し、第３図は同
じ〈従来の異常電圧に対する機器保護装置の他の一例を
示す回路図、第４図はガスチューブアレスタの電圧−電
流特性の一例を示す特性図、第５図はこめ考案の機器保
護装置の一実施例を示す回路図、第６図はこの考案の機
器保護装置の他の実施例を示す要部の回路図、第７図は
第６図のチョークコイルＣＣ１が通電中の等価回路であ
る。図面において、Ｕは通信機器等の被保護機器、Ｄ１〜Ｄ
４はダイオード、ＡＲＩとＡＲ２はガスチューブアレス
タ、ＣＣ１とＣＣ２はチョークコイル、■Ｒ１とＶＲ２
はバリスタを示す。Figure 1 is a circuit diagram showing an example of a conventional equipment protection device against abnormal voltage. Figures 2 1 to 3 are examples of surge waveforms. Figure 1 shows a positive, unipolar surge, and Figure 2 shows a negative polarity surge. Figure 3 shows a unipolar surge, Figure 3 shows a bipolar surge, Figure 3 is a circuit diagram showing another example of the conventional equipment protection device against abnormal voltage, Figure 4 shows the voltage-current of a gas tube arrester. A characteristic diagram showing an example of the characteristics, FIG. 5 is a circuit diagram showing one embodiment of the equipment protection device of this invention, and FIG. 6 is a circuit diagram of the main part showing another embodiment of the equipment protection device of this invention. FIG. 7 shows an equivalent circuit when the choke coil CC1 shown in FIG. 6 is energized. In the drawings, U represents protected equipment such as communication equipment, and D1 to D
4 is a diode, ARI and AR2 are gas tube arresters, CC1 and CC2 are choke coils, ■R1 and VR2
indicates a barista.

Claims

[Scope of utility model registration request]

An auxiliary rectifier bridge installed in parallel with the protected equipment, a gas tube arrester with one terminal connected to its DC positive and negative terminals, and a gas tube arrester connected to the other terminal of each of these gas tube arresters. What is claimed is: 1. A device protecting device against abnormal voltage, comprising: a choke coil; the middle point of the choke coil is grounded;