ZA728755B - An improvement in or relating to ground fault interrupter apparatus with means protecting against a grounded neutral condition - Google Patents
An improvement in or relating to ground fault interrupter apparatus with means protecting against a grounded neutral conditionInfo
- Publication number
- ZA728755B ZA728755B ZA728755A ZA728755A ZA728755B ZA 728755 B ZA728755 B ZA 728755B ZA 728755 A ZA728755 A ZA 728755A ZA 728755 A ZA728755 A ZA 728755A ZA 728755 B ZA728755 B ZA 728755B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- improvement
- ground fault
- protecting against
- neutral condition
- Prior art date
Links
- 230000007935 neutral effect Effects 0.000 title 1
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)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21877172A | 1972-01-18 | 1972-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA728755B true ZA728755B (en) | 1973-08-29 |
Family
ID=22816443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA728755A ZA728755B (en) | 1972-01-18 | 1972-12-12 | An improvement in or relating to ground fault interrupter apparatus with means protecting against a grounded neutral condition |
Country Status (5)
| Country | Link |
|---|---|
| JP (2) | JPS4886050A (enrdf_load_stackoverflow) |
| AT (1) | AT318051B (enrdf_load_stackoverflow) |
| CA (1) | CA1016262A (enrdf_load_stackoverflow) |
| DE (1) | DE2301757A1 (enrdf_load_stackoverflow) |
| ZA (1) | ZA728755B (enrdf_load_stackoverflow) |
-
1972
- 1972-12-12 ZA ZA728755A patent/ZA728755B/xx unknown
- 1972-12-27 CA CA159,930A patent/CA1016262A/en not_active Expired
-
1973
- 1973-01-15 DE DE2301757A patent/DE2301757A1/de not_active Withdrawn
- 1973-01-18 JP JP48007445A patent/JPS4886050A/ja active Pending
- 1973-01-18 AT AT38373A patent/AT318051B/de not_active IP Right Cessation
-
1978
- 1978-03-20 JP JP1978034806U patent/JPS53135539U/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA1016262A (en) | 1977-08-23 |
| AT318051B (de) | 1974-09-25 |
| JPS4886050A (enrdf_load_stackoverflow) | 1973-11-14 |
| AU5005272A (en) | 1974-06-20 |
| JPS53135539U (enrdf_load_stackoverflow) | 1978-10-26 |
| DE2301757A1 (de) | 1973-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU472027B2 (en) | Improvements in or relating to ground fault interrupter apparatus | |
| CA968453A (en) | Ground fault indicator | |
| CA1020629A (en) | Ground fault detection apparatus | |
| AU465764B2 (en) | Aground fault protective system | |
| CA993930A (en) | Ground fault interrupter device | |
| ZA746954B (en) | Ground fault interrupter with means protecting against a grounded neutral condition and with a test circuit for testing performance | |
| JPS51129638A (en) | Ground fault detection system | |
| AU513644B2 (en) | Ground fault protective apparatus | |
| ZA724895B (en) | An improvement in or relating to electrical apparatus including a ground fault sensor | |
| GB1547097A (en) | Ground fault interrupter apparatus | |
| CA1010115A (en) | Ground fault protection system including improved impedance detecting means | |
| CA920259A (en) | Portable ground fault interrupter apparatus | |
| ZA737947B (en) | Circuit breaker panelboard with grounded neutral protection | |
| ZA728755B (en) | An improvement in or relating to ground fault interrupter apparatus with means protecting against a grounded neutral condition | |
| AU486121B2 (en) | Improvements in or relating to ground fault interrupter apparatus with means protecting against a grounded neutral condition | |
| ZA723226B (en) | An improvement in or relating to ground fault interrupter apparatus with means for detecting a grounded neutral condition | |
| AU5221173A (en) | Improvements in or relating to ground fault interrupter apparatus with means protecting against a grounded neutral condition and witha test circuit for testing apparatus performance | |
| ZA741087B (en) | Ground fault protective system | |
| CA953811A (en) | Ground fault protective device | |
| ZA714828B (en) | Ground fault protective system having grounded neutral protection | |
| CA917297A (en) | Circuit breaker including improved ground fault protective device | |
| CA925997A (en) | Ground fault protective system having grounded neutral protection | |
| AU493259B2 (en) | Improvements in or relating to ground fault interrupter with means protecting against a grounded neutral condition and witha test circuit for testing performance | |
| ZA761086B (en) | An improvement in or relating to multipole ground fault circuit interrupter with grounded neutral protection | |
| ZA73982B (en) | An improvement in or relating to ground fault interrupter apparatus with means protecting against a grounded neutral condition and with a test circuit for testing apparatus performance |