GB1549313A - Control unit for earth leakage detection - Google Patents
Control unit for earth leakage detectionInfo
- Publication number
- GB1549313A GB1549313A GB653576A GB653576A GB1549313A GB 1549313 A GB1549313 A GB 1549313A GB 653576 A GB653576 A GB 653576A GB 653576 A GB653576 A GB 653576A GB 1549313 A GB1549313 A GB 1549313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control unit
- leakage detection
- earth leakage
- earth
- detection
- 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
- 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
- H02H7/226—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 for wires or cables, e.g. heating wires
-
- 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
- H02H3/17—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 by means of an auxiliary voltage injected into the installation to be protected
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB653576A GB1549313A (en) | 1977-02-10 | 1977-02-10 | Control unit for earth leakage detection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB653576A GB1549313A (en) | 1977-02-10 | 1977-02-10 | Control unit for earth leakage detection |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1549313A true GB1549313A (en) | 1979-08-01 |
Family
ID=9816275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB653576A Expired GB1549313A (en) | 1977-02-10 | 1977-02-10 | Control unit for earth leakage detection |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1549313A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995006349A1 (en) * | 1993-08-24 | 1995-03-02 | Metal Manufactures Limited | Load control module |
CN109443652A (en) * | 2018-12-16 | 2019-03-08 | 山西汾西重工有限责任公司 | Deep-sea aircraft promotes mainly motor water pressure test leak water detdction circuit and detection method |
-
1977
- 1977-02-10 GB GB653576A patent/GB1549313A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995006349A1 (en) * | 1993-08-24 | 1995-03-02 | Metal Manufactures Limited | Load control module |
US5721657A (en) * | 1993-08-24 | 1998-02-24 | Metal Manufactures Limited | Load control module |
CN109443652A (en) * | 2018-12-16 | 2019-03-08 | 山西汾西重工有限责任公司 | Deep-sea aircraft promotes mainly motor water pressure test leak water detdction circuit and detection method |
CN109443652B (en) * | 2018-12-16 | 2024-04-26 | 山西汾西重工有限责任公司 | Water leakage detection circuit and detection method for hydraulic test of main thrust motor of deep sea aircraft |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |