ZA723226B - An improvement in or relating to ground fault interrupter apparatus with means for detecting a grounded neutral condition - Google Patents
An improvement in or relating to ground fault interrupter apparatus with means for detecting a grounded neutral conditionInfo
- Publication number
- ZA723226B ZA723226B ZA723226A ZA723226A ZA723226B ZA 723226 B ZA723226 B ZA 723226B ZA 723226 A ZA723226 A ZA 723226A ZA 723226 A ZA723226 A ZA 723226A ZA 723226 B ZA723226 B ZA 723226B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- improvement
- detecting
- ground fault
- neutral condition
- 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)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15833771A | 1971-06-30 | 1971-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA723226B true ZA723226B (en) | 1973-03-28 |
Family
ID=22567662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA723226A ZA723226B (en) | 1971-06-30 | 1972-05-12 | An improvement in or relating to ground fault interrupter apparatus with means for detecting a grounded neutral condition |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT311468B (en) |
| CA (1) | CA968452A (en) |
| CH (1) | CH543175A (en) |
| DE (1) | DE2231432C2 (en) |
| ZA (1) | ZA723226B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59107041D1 (en) * | 1991-09-24 | 1996-01-18 | Siemens Ag | Protective device for protective measures against fault currents. |
| DE19813568C1 (en) * | 1998-03-27 | 1999-12-09 | Bosch Gmbh Robert | Device for fastening elements to a wire grid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3473091A (en) * | 1967-04-14 | 1969-10-14 | Hubbell Inc Harvey | Ground leakage differential protective apparatus |
-
1972
- 1972-04-27 CA CA140,696A patent/CA968452A/en not_active Expired
- 1972-05-12 ZA ZA723226A patent/ZA723226B/en unknown
- 1972-06-27 DE DE2231432A patent/DE2231432C2/en not_active Expired
- 1972-06-29 CH CH973672A patent/CH543175A/en not_active IP Right Cessation
- 1972-06-30 AT AT566172A patent/AT311468B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2231432A1 (en) | 1973-01-18 |
| AT311468B (en) | 1973-11-26 |
| CH543175A (en) | 1973-10-15 |
| CA968452A (en) | 1975-05-27 |
| DE2231432C2 (en) | 1982-09-09 |
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