JPS4612581B1 - - Google Patents
Info
- Publication number
- JPS4612581B1 JPS4612581B1 JP7638267A JP7638267A JPS4612581B1 JP S4612581 B1 JPS4612581 B1 JP S4612581B1 JP 7638267 A JP7638267 A JP 7638267A JP 7638267 A JP7638267 A JP 7638267A JP S4612581 B1 JPS4612581 B1 JP S4612581B1
- Authority
- JP
- Japan
- 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
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
- H02H3/17—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
-
- 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
- H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
- H02H3/331—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers responsive to earthing of the neutral conductor
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63093267A | 1967-04-14 | 1967-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4612581B1 true JPS4612581B1 (ja) | 1971-03-31 |
Family
ID=24529162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7638267A Pending JPS4612581B1 (ja) | 1967-04-14 | 1967-11-28 |
Country Status (5)
Country | Link |
---|---|
US (2) | US3473091A (ja) |
JP (1) | JPS4612581B1 (ja) |
DE (1) | DE1588293A1 (ja) |
FR (1) | FR1543119A (ja) |
GB (1) | GB1134590A (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3604982A (en) * | 1969-02-13 | 1971-09-14 | Hubbell Inc Harvey | Ground fault and overload current interrupting apparatus |
US3548259A (en) * | 1969-03-03 | 1970-12-15 | Hubbell Inc Harvey | Ground fault circuit interrupter with undervoltage release |
US3614534A (en) * | 1970-06-29 | 1971-10-19 | Thomas A O Gross | Ground-fault-responsive electrical protective systems |
US3663865A (en) * | 1970-07-14 | 1972-05-16 | Square D Co | Differential ground fault protection system |
US3678341A (en) * | 1970-08-05 | 1972-07-18 | Del Electronics | Surge voltage protection system |
US3728580A (en) * | 1971-04-06 | 1973-04-17 | Electrical Protection Co Ltd | Core-balance earth leakage protection |
CA968452A (en) * | 1971-06-30 | 1975-05-27 | Kenneth R. Coley | Ground fault interrupter apparatus with means for detecting a grounded neutral condition |
US3911323A (en) * | 1974-02-19 | 1975-10-07 | Westinghouse Electric Corp | Ground fault protector with arcing fault indicator |
US3895263A (en) * | 1974-08-27 | 1975-07-15 | Ite Imperial Corp | Grounded neutral detector drive circuit for two pole ground fault interrupter |
US4118597A (en) * | 1975-06-23 | 1978-10-03 | Proctor & Associates Company | Method and apparatus for detecting direct currents in a transmission line |
US4037265A (en) * | 1975-11-25 | 1977-07-19 | Pemco Corporation | Arc preventing power supply system |
EP0533972B1 (de) * | 1991-09-24 | 1995-12-06 | Siemens Aktiengesellschaft | Schutzeinrichtung für Schutzmassnahmen gegen Fehlerströme |
US6782329B2 (en) * | 1998-02-19 | 2004-08-24 | Square D Company | Detection of arcing faults using bifurcated wiring system |
US6850394B2 (en) * | 2002-08-23 | 2005-02-01 | Cheil Electric Wiring Devices Co. | Apparatus and method for determining mis-wiring in a ground fault circuit interrupter |
US9875843B2 (en) * | 2015-05-06 | 2018-01-23 | Bothhand Enterprise Inc. | Electric coil device |
US11232896B2 (en) * | 2017-03-24 | 2022-01-25 | University Of Florida Research Foundation, Incorporated | Inductor designs for reducing magnetic interference |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA677850A (en) * | 1964-01-14 | Westinghouse Electric Corporation | Frequency selective networks | |
GB376250A (en) * | 1931-02-26 | 1932-06-27 | Johnson And Phillips Ltd | Improvements in automatic protective systems for alternating current circuits |
NL256426A (ja) * | 1959-10-02 | |||
FR1267270A (fr) * | 1960-06-09 | 1961-07-21 | Electronique Et D Automatique | Dispositif de commande d'un relais de protection pour circuit d'alimentation électrique |
DE1141367B (de) * | 1961-03-24 | 1962-12-20 | Schutzapp Ges Parisu Co M B H | Schutzschaltung mit Fehlerstrom-Schutzschalter |
DE1175349B (de) * | 1963-09-20 | 1964-08-06 | Stotz Kontakt Gmbh | Fehlerstrom- und Beruehrungsschutzschalung |
US3296493A (en) * | 1964-11-05 | 1967-01-03 | Automatic Timing And Controls | Leakage detection and control circuit |
-
1967
- 1967-04-14 US US3473091D patent/US3473091A/en not_active Expired - Lifetime
- 1967-07-19 GB GB3310867A patent/GB1134590A/en not_active Expired
- 1967-08-07 DE DE19671588293 patent/DE1588293A1/de active Pending
- 1967-10-31 FR FR126484A patent/FR1543119A/fr not_active Expired
- 1967-11-28 JP JP7638267A patent/JPS4612581B1/ja active Pending
-
1975
- 1975-02-19 US US05/551,002 patent/USRE28996E/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB1134590A (en) | 1968-11-27 |
US3473091A (en) | 1969-10-14 |
FR1543119A (fr) | 1968-10-18 |
DE1588293A1 (de) | 1970-05-21 |
USRE28996E (en) | 1976-10-05 |