IT1036450B - Interruttore di potenza per guasto a terra - Google Patents
Interruttore di potenza per guasto a terraInfo
- Publication number
- IT1036450B IT1036450B IT68744/75A IT6874475A IT1036450B IT 1036450 B IT1036450 B IT 1036450B IT 68744/75 A IT68744/75 A IT 68744/75A IT 6874475 A IT6874475 A IT 6874475A IT 1036450 B IT1036450 B IT 1036450B
- Authority
- IT
- Italy
- Prior art keywords
- power switch
- earth fault
- fault
- earth
- switch
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
- H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US48604574A | 1974-07-05 | 1974-07-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1036450B true IT1036450B (it) | 1979-10-30 |
Family
ID=23930390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT68744/75A IT1036450B (it) | 1974-07-05 | 1975-07-04 | Interruttore di potenza per guasto a terra |
Country Status (6)
Country | Link |
---|---|
CA (1) | CA1058739A (it) |
DE (1) | DE2529713A1 (it) |
FR (1) | FR2277429A1 (it) |
GB (1) | GB1521082A (it) |
IT (1) | IT1036450B (it) |
ZA (1) | ZA754168B (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5144516A (en) * | 1991-02-04 | 1992-09-01 | Wing Shing Products Company, Ltd. | Leakage current circuit interrupter device |
NO304860B1 (no) * | 1991-07-22 | 1999-02-22 | Pdl Holdings Ltd | Brytermekanisme |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3555360A (en) * | 1969-03-20 | 1971-01-12 | Hubbell Inc Harvey | Phase controlled ground fault circuit interrupter |
-
1975
- 1975-06-24 CA CA230,013A patent/CA1058739A/en not_active Expired
- 1975-06-30 GB GB27489/75A patent/GB1521082A/en not_active Expired
- 1975-06-30 ZA ZA00754168A patent/ZA754168B/xx unknown
- 1975-07-03 DE DE19752529713 patent/DE2529713A1/de active Granted
- 1975-07-04 FR FR7521027A patent/FR2277429A1/fr active Granted
- 1975-07-04 IT IT68744/75A patent/IT1036450B/it active
Also Published As
Publication number | Publication date |
---|---|
DE2529713C2 (it) | 1987-10-22 |
GB1521082A (en) | 1978-08-09 |
FR2277429A1 (fr) | 1976-01-30 |
ZA754168B (en) | 1976-06-30 |
CA1058739A (en) | 1979-07-17 |
FR2277429B1 (it) | 1981-05-29 |
DE2529713A1 (de) | 1976-01-22 |
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