JPS4993841A - - Google Patents
Info
- Publication number
- JPS4993841A JPS4993841A JP48118847A JP11884773A JPS4993841A JP S4993841 A JPS4993841 A JP S4993841A JP 48118847 A JP48118847 A JP 48118847A JP 11884773 A JP11884773 A JP 11884773A JP S4993841 A JPS4993841 A JP S4993841A
- 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.)
- Granted
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
- H02H3/26—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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Distribution Board (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29981672A | 1972-10-24 | 1972-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4993841A true JPS4993841A (https=) | 1974-09-06 |
| JPS5242459B2 JPS5242459B2 (https=) | 1977-10-25 |
Family
ID=23156417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48118847A Expired JPS5242459B2 (https=) | 1972-10-24 | 1973-10-22 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3745415A (https=) |
| JP (1) | JPS5242459B2 (https=) |
| CA (1) | CA995807A (https=) |
| FR (1) | FR2204063B1 (https=) |
| GB (1) | GB1429065A (https=) |
| IT (1) | IT998858B (https=) |
| ZA (1) | ZA737947B (https=) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869649A (en) * | 1973-04-13 | 1975-03-04 | Gen Electric | Electrical protective panel assembly with sensitive ground fault protecting means |
| US3932825A (en) * | 1974-04-09 | 1976-01-13 | Federal Pacific Electric Company | Current limiting circuit breaker system |
| US3908154A (en) * | 1974-09-13 | 1975-09-23 | Ite Imperial Corp | Two pole ground fault circuit protector |
| US4172271A (en) * | 1978-05-08 | 1979-10-23 | General Electric Company | Fusible circuit interrupter with ground fault circuit protection |
| US5206777A (en) * | 1991-09-23 | 1993-04-27 | Eaton Corporation | Three-phase panelboard using standard rated three-pole circuit protective devices in a grounded delta system |
| JP5905779B2 (ja) * | 2012-06-13 | 2016-04-20 | 株式会社日立製作所 | 抵抗器及びそれを備えたスイッチギヤ |
| US12374870B2 (en) | 2022-03-07 | 2025-07-29 | Abb Schweiz Ag | Electrical panel board |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3611035A (en) * | 1970-06-08 | 1971-10-05 | Rucker Co | Ground fault protective system having grounded neutral protection |
-
1972
- 1972-10-24 US US00299816A patent/US3745415A/en not_active Expired - Lifetime
-
1973
- 1973-10-02 ZA ZA737947*A patent/ZA737947B/xx unknown
- 1973-10-22 JP JP48118847A patent/JPS5242459B2/ja not_active Expired
- 1973-10-23 CA CA184,007A patent/CA995807A/en not_active Expired
- 1973-10-23 FR FR7337798A patent/FR2204063B1/fr not_active Expired
- 1973-10-23 GB GB4929273A patent/GB1429065A/en not_active Expired
- 1973-10-23 IT IT30427/73A patent/IT998858B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| US3745415A (en) | 1973-07-10 |
| CA995807A (en) | 1976-08-24 |
| ZA737947B (en) | 1974-08-28 |
| GB1429065A (en) | 1976-03-24 |
| FR2204063A1 (https=) | 1974-05-17 |
| JPS5242459B2 (https=) | 1977-10-25 |
| IT998858B (it) | 1976-02-20 |
| FR2204063B1 (https=) | 1976-10-01 |