JPS55114463A - Electric shock preventing device - Google Patents
Electric shock preventing deviceInfo
- Publication number
- JPS55114463A JPS55114463A JP2096079A JP2096079A JPS55114463A JP S55114463 A JPS55114463 A JP S55114463A JP 2096079 A JP2096079 A JP 2096079A JP 2096079 A JP2096079 A JP 2096079A JP S55114463 A JPS55114463 A JP S55114463A
- Authority
- JP
- Japan
- Prior art keywords
- electric shock
- load voltage
- pilot lamp
- buzzer
- contacts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To achieve the prevention of electric shock accident occurrence by parallel providing an electric shock warning buzzer to the pilot lamp which is dimmed out by the main contact opening of the captioned device and is lighted brightly by the secondary no-load voltage of an arc welding machine at the closing and operating this buzzer by the secondary no-load voltage.
CONSTITUTION: At the contacts 10A of the electric shock preventing device 20A close, the voltage of the terminals 7A, 8A of an arc welding machine 1A changes from the secondary no-load voltage to the secondary load voltage and therefore a pilot lamp 6A is held lighted dimly and an electric shock warning buzzer 11A does not sound either. In case the main contacts 3A fail to open owing to a fault in the main contact opening device such as burn of a semiconductor comtrolling and rectifying element 27A when the welding work is ceased, the secondary no-load voltage is applied from the terminals 7A, 8A to the pilot lamp 6a and electric shock warning buzzer 11A through the contacts 10A and therefore the pilot lamp 6A lights up brightly and the buzzer 11A operates to a sounding state.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2096079A JPS55114463A (en) | 1979-02-23 | 1979-02-23 | Electric shock preventing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2096079A JPS55114463A (en) | 1979-02-23 | 1979-02-23 | Electric shock preventing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55114463A true JPS55114463A (en) | 1980-09-03 |
Family
ID=12041735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2096079A Pending JPS55114463A (en) | 1979-02-23 | 1979-02-23 | Electric shock preventing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55114463A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI496648B (en) * | 2012-05-23 | 2015-08-21 |
-
1979
- 1979-02-23 JP JP2096079A patent/JPS55114463A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI496648B (en) * | 2012-05-23 | 2015-08-21 |
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