JPH0253297U

JPH0253297U -

Info

Publication number: JPH0253297U
Application number: JP1988131800U
Authority: JP
Priority date: 1988-10-11
Filing date: 1988-10-11
Publication date: 1990-04-17

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示し、第１図は全体
の電気的構成図、第２図は制御回路及び信号発生
回路の具体的な電気的構成図、第３図及び第４図
は作用説明用のタイムチヤート、第５図は正面図
、第６図は上面図、第７図は側面図、第８図及び
第９図は夫々第５図中―線及び―線に沿
う断面図である。図面中、１はケース、４乃至６及び４′乃至６
′は電源側端子、１０乃至１２及び１０′乃至１
２′は負荷側端子、２３は外部接続用端子、３３
及び３３′はサイリスタ（半導体スイツチング素
子）、５３は制御回路、５４は信号発生回路、５
５は静止形開閉器、６１は三相誘導電動機（負荷
）、６６は正転用スイツチ、６７は逆転用スイツ
チ、６８は静止形開閉器を示す。 The drawings show one embodiment of the present invention, in which Fig. 1 is an overall electrical configuration diagram, Fig. 2 is a specific electrical configuration diagram of a control circuit and a signal generation circuit, and Figs. 3 and 4 are operational diagrams. For explanatory time charts, Fig. 5 is a front view, Fig. 6 is a top view, Fig. 7 is a side view, and Figs. 8 and 9 are sectional views taken along lines - and - in Fig. 5, respectively. be. In the drawings, 1 is a case, 4 to 6 and 4' to 6
' is the power supply side terminal, 10 to 12 and 10' to 1
2' is the load side terminal, 23 is the external connection terminal, 33
33' is a thyristor (semiconductor switching element), 53 is a control circuit, 54 is a signal generation circuit, 5
5 is a static switch, 61 is a three-phase induction motor (load), 66 is a forward rotation switch, 67 is a reverse rotation switch, and 68 is a static switch.

Claims

[Scope of utility model registration request]

A case, an external connection terminal provided in the case, a semiconductor switching element provided in the case for turning off the load, a control circuit for controlling the semiconductor switching element, and an internal circuit for the control circuit. A static switch comprising a signal generating circuit that outputs a control signal and an external control signal to the external connection terminal in a mutually electrically interlocked state.