GB1164296A - A Device for Detecting Insulation Faults in Electrical Apparatus. - Google Patents
A Device for Detecting Insulation Faults in Electrical Apparatus.Info
- Publication number
- GB1164296A GB1164296A GB4312666A GB4312666A GB1164296A GB 1164296 A GB1164296 A GB 1164296A GB 4312666 A GB4312666 A GB 4312666A GB 4312666 A GB4312666 A GB 4312666A GB 1164296 A GB1164296 A GB 1164296A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- discharge tube
- trip
- arrangement
- energized
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/162—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
1,164,296. Protective arrangements. ATELIERS DE CONSTRUCTIONS DE VAUXANDIGNY and R. A. GUASCO. 27 Sept., 1966 [4 May, 1966], No. 43126/66. Heading H2K. An earth leakage protective arrangement includes a light emitting element, e.g. a gas discharge tube T 1 , means for applying to the element a voltage resulting from an insulation fault, and a photo-conductive element S 1 optically coupled to the tube T 1 and effective to cause operation of a control device, e.g. the release of a circuit-breaker K. In the arrangement shown, the tube T 1 is connected across the supply conductors to a load Z in series with a resistor R 1 and the secondary winding E 3 of a core-balance transformer N. The resistor R 1 and a potentiometer P 1 form a voltage divider across the supply, the tube T 1 being normally energized by the voltage across the potentiometer P 1 and being lit so that the conductive element S 1 has a low resistance. This element S 1 shunts a further discharge tube T 2 which is not lit so that a further photoconductive element S 2 has a high resistance and prevents a trip coil B being sufficiently energized to trip the circuit-breaker K. In the event of earth leakage the voltage induced in the winding E 3 opposes that across the potentiometer P 1 and the tube T 1 is extinguished. The element S 1 now has a high resistance so that the tube T 2 strikes and illuminates the element S 2 . The resistance of the latter element S 2 falls, so that the coil B is sufficiently energized to trip the circuit-breaker K. Fig. 1 (not shown), illustrates an arrangement in which a first discharge tube is energized from an autotransformer in a connection to earth from the frame of a machine. The associated photoconductive element is connected in series with a further discharge tube associated with a further photo-conductive element in series with the trip coil. A further arrangement, Fig. 2 (not shown), has a single discharge tube connected between the frame of a machine and a neutral conductor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR60220A FR90754E (en) | 1965-05-10 | 1966-05-04 | Detector-amplifier for low level signals and devices with application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1164296A true GB1164296A (en) | 1969-09-17 |
Family
ID=8607803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4312666A Expired GB1164296A (en) | 1966-05-04 | 1966-09-27 | A Device for Detecting Insulation Faults in Electrical Apparatus. |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE687323A (en) |
| DE (1) | DE1538520A1 (en) |
| GB (1) | GB1164296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901090A (en) * | 2015-06-01 | 2015-09-09 | 佛山市顺德区信辉达电子有限公司 | Voltage conversion type earth leakage protection plug |
-
1966
- 1966-05-10 DE DE19661538520 patent/DE1538520A1/en active Pending
- 1966-09-23 BE BE687323D patent/BE687323A/xx unknown
- 1966-09-27 GB GB4312666A patent/GB1164296A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901090A (en) * | 2015-06-01 | 2015-09-09 | 佛山市顺德区信辉达电子有限公司 | Voltage conversion type earth leakage protection plug |
Also Published As
| Publication number | Publication date |
|---|---|
| BE687323A (en) | 1967-03-01 |
| DE1538520A1 (en) | 1970-02-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed |