SU531683A1 - Device for limiting the no-load voltage of welding transformers - Google Patents
Device for limiting the no-load voltage of welding transformersInfo
- Publication number
- SU531683A1 SU531683A1 SU2099891A SU2099891A SU531683A1 SU 531683 A1 SU531683 A1 SU 531683A1 SU 2099891 A SU2099891 A SU 2099891A SU 2099891 A SU2099891 A SU 2099891A SU 531683 A1 SU531683 A1 SU 531683A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- welding
- limiting
- load voltage
- rectifier
- contactor
- Prior art date
Links
Landscapes
- Arc Welding Control (AREA)
Description
и тем самым обесточена катушка силового контактора 1. Форсирующий конденсатор 20 через выпр митель 21 зар жен до полного напр жени холостого хода сварочного трансформатора 3. На электрод 12 через катушку реле 17 подано дежурное напр жение с делителей 13, 14. При замыкании дугового промежутка срабатывает реле 17 и своими контактами 18 подключает формируюш;ий конденсатор 20 на обмотку контактора 1, который , срабатыва , замыкает свой контакт и подает полное напр жение на электрод 12. При протекании сварочного тока срабатывает реле 9 и своими контактами удерживает контактор 1 подключенным через выпр митель 21 к сварочным проводам. В случае длительного короткого замыкани дугового промежутка , когда напр жение на выходе сварочного трансформатора 3 падает ниже напр жени удержани контактора 1 во включенном состо нии, катушка этого контактора питаетс от трансформатора тока 8 через выпр митель 7 и диод 6. Диод 6 исключает возможность подпитки обмотки реле 9 напр жением холостого хода через выпр митель 21 после прекраш.ени процесса сварки. Контактор 1 обесточитс с выдержкой времени благодар наличию врем задаюшего конденсатора 5 и резистора 4. Схема возвраш,аетс в исходное состо ние.and thus the coil of the power contactor 1 is de-energized. The forcing capacitor 20 through the rectifier 21 is charged until the voltage of the idling of the welding transformer 3 is fully applied. To the electrode 12, the standby voltage from the dividers 13, 14 is applied through the coil of the arc gap the relay 17 and its contacts 18 connects the form capacitor 20 to the winding of the contactor 1, which, when activated, closes its contact and applies a full voltage to the electrode 12. When the welding current flows, the relay 9 and its contacts Tammy retains contactor 1 is connected through a rectifier 21 to the welding wire. In the case of a prolonged short circuit of the arc gap, when the voltage at the output of welding transformer 3 falls below the holding voltage of contactor 1 in the on state, the coil of this contactor is powered by current transformer 8 through rectifier 7 and diode 6. Diode 6 eliminates the possibility of winding the relay 9 is the no-load voltage across the rectifier 21 after the welding process is terminated. The contactor 1 will be de-energized with a time delay due to the presence of the time of the driving capacitor 5 and the resistor 4. The circuit has returned to its original state.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2099891A SU531683A1 (en) | 1975-01-24 | 1975-01-24 | Device for limiting the no-load voltage of welding transformers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2099891A SU531683A1 (en) | 1975-01-24 | 1975-01-24 | Device for limiting the no-load voltage of welding transformers |
Publications (1)
Publication Number | Publication Date |
---|---|
SU531683A1 true SU531683A1 (en) | 1976-10-15 |
Family
ID=20608408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2099891A SU531683A1 (en) | 1975-01-24 | 1975-01-24 | Device for limiting the no-load voltage of welding transformers |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU531683A1 (en) |
-
1975
- 1975-01-24 SU SU2099891A patent/SU531683A1/en active
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