ZA737947B - Circuit breaker panelboard with grounded neutral protection - Google Patents
Circuit breaker panelboard with grounded neutral protectionInfo
- Publication number
- ZA737947B ZA737947B ZA737947*A ZA737947A ZA737947B ZA 737947 B ZA737947 B ZA 737947B ZA 737947 A ZA737947 A ZA 737947A ZA 737947 B ZA737947 B ZA 737947B
- Authority
- ZA
- South Africa
- Prior art keywords
- circuit breaker
- grounded neutral
- neutral protection
- breaker panelboard
- panelboard
- Prior art date
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 (1)
| Publication Number | Publication Date |
|---|---|
| ZA737947B true ZA737947B (en) | 1974-08-28 |
Family
ID=23156417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA737947*A ZA737947B (en) | 1972-10-24 | 1973-10-02 | Circuit breaker panelboard with grounded neutral protection |
Country Status (7)
Families Citing this family (6)
| 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 |
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 GB GB4929273A patent/GB1429065A/en not_active Expired
- 1973-10-23 FR FR7337798A patent/FR2204063B1/fr 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 |
| JPS5242459B2 (US08118993-20120221-C00002.png) | 1977-10-25 |
| JPS4993841A (US08118993-20120221-C00002.png) | 1974-09-06 |
| FR2204063B1 (US08118993-20120221-C00002.png) | 1976-10-01 |
| FR2204063A1 (US08118993-20120221-C00002.png) | 1974-05-17 |
| IT998858B (it) | 1976-02-20 |
| CA995807A (en) | 1976-08-24 |
| GB1429065A (en) | 1976-03-24 |
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