GB1112327A - Apparatus for the control of protective gas systems - Google Patents
Apparatus for the control of protective gas systemsInfo
- Publication number
- GB1112327A GB1112327A GB3964466A GB3964466A GB1112327A GB 1112327 A GB1112327 A GB 1112327A GB 3964466 A GB3964466 A GB 3964466A GB 3964466 A GB3964466 A GB 3964466A GB 1112327 A GB1112327 A GB 1112327A
- Authority
- GB
- United Kingdom
- Prior art keywords
- timer
- switch
- gate
- gas
- internal
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/24—Protection against failure of cooling arrangements, e.g. due to loss of cooling medium or due to interruption of the circulation of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
1,112,327. Electrical control systems. LEUNA-WERKE "WALTER ULBRICHT" VEB. Sept.5, 1966, No.39644/66. Heading G1N. A control system for electrical apparatus enclosed in an atmosphere of a protective gas comprises means sensitive to the internal gas pressure to cut off the power supply in the event of a gas fault. As shown (Fig. 1), when the door of the housing is closed a switch 5 is operated to allow gas from a supply 1 to enter. The gas flow is measured at 3 and produces an electrical signal at 4 which is supplied to an AND gate 11. The internal gas pressure is measured at 8, and produces a signal at 9 which is also fed to gate 11. When both signals appear, the gate 11 initiates a timer 13 which closes the main supply 16 at the end of a predetermined period. If either input signal to the AND gate fails, timer 13 causes switch 16 to disconnect the power supply. In one modification (Fig. 4), the internal pressure gauge 8 initiates the timer 13 through a lower value preset switch 12. After a predetermined scavenging period, the timer 13 closes an exhaust valve 19 and the internal pressure rises to energise a higher value preset switch 15, which actuates the main supply switch 16. Other modifications are described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3964466A GB1112327A (en) | 1966-09-05 | 1966-09-05 | Apparatus for the control of protective gas systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3964466A GB1112327A (en) | 1966-09-05 | 1966-09-05 | Apparatus for the control of protective gas systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1112327A true GB1112327A (en) | 1968-05-01 |
Family
ID=10410674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3964466A Expired GB1112327A (en) | 1966-09-05 | 1966-09-05 | Apparatus for the control of protective gas systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1112327A (en) |
-
1966
- 1966-09-05 GB GB3964466A patent/GB1112327A/en not_active Expired
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