SE7602161L - Effektstyranleggning - Google Patents
EffektstyranleggningInfo
- Publication number
- SE7602161L SE7602161L SE7602161A SE7602161A SE7602161L SE 7602161 L SE7602161 L SE 7602161L SE 7602161 A SE7602161 A SE 7602161A SE 7602161 A SE7602161 A SE 7602161A SE 7602161 L SE7602161 L SE 7602161L
- Authority
- SE
- Sweden
- Prior art keywords
- fault
- current
- detected
- potential
- level
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
-
- 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
- H02H3/08—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 excess current
- H02H3/083—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 excess current for three-phase systems
-
- 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
- H02H3/36—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 of different systems, e.g. of parallel feeder systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Keying Circuit Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/555,770 US4002950A (en) | 1975-03-06 | 1975-03-06 | Power transmission control system |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7602161L true SE7602161L (sv) | 1976-09-07 |
SE419012B SE419012B (sv) | 1981-07-06 |
Family
ID=24218543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7602161A SE419012B (sv) | 1975-03-06 | 1976-02-23 | Anordning for overvakning av effektoverforingen i en vexelstromshogspenningsledning |
Country Status (5)
Country | Link |
---|---|
US (1) | US4002950A (sv) |
JP (1) | JPS51113135A (sv) |
DE (1) | DE2608572C3 (sv) |
GB (1) | GB1535124A (sv) |
SE (1) | SE419012B (sv) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4916573A (en) * | 1985-10-25 | 1990-04-10 | S & C Electric Company | Control circuit for a circuit interrupter |
US4890002A (en) * | 1987-11-09 | 1989-12-26 | Perma Power Electronics, Inc. | Line voltage fault detector for appliance protection |
US4839770A (en) * | 1988-01-25 | 1989-06-13 | S&C Electric Company | Control circuit with validity-determining arrangement |
GB2305556B (en) * | 1995-09-19 | 2000-02-23 | Gec Alsthom Ltd | Power-line trip circuit |
AU2002950581A0 (en) * | 2002-08-02 | 2002-09-12 | Wayne Callen | Electrical safety circuit |
CN110473508B (zh) * | 2019-08-16 | 2021-11-12 | 深圳南云微电子有限公司 | 一种实现宽电压输入的蜂鸣器驱动方法及驱动电路 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1285997A (en) * | 1969-04-25 | 1972-08-16 | English Electric Co Ltd | Apparatus for deriving a signal proportional to a change-function of phase angle |
US3873887A (en) * | 1974-03-18 | 1975-03-25 | Gen Electric | Alternating-current power delivery system |
-
1975
- 1975-03-06 US US05/555,770 patent/US4002950A/en not_active Expired - Lifetime
-
1976
- 1976-02-09 GB GB4948/76A patent/GB1535124A/en not_active Expired
- 1976-02-23 SE SE7602161A patent/SE419012B/sv not_active IP Right Cessation
- 1976-03-02 DE DE2608572A patent/DE2608572C3/de not_active Expired
- 1976-03-05 JP JP51023371A patent/JPS51113135A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
GB1535124A (en) | 1978-12-06 |
DE2608572A1 (de) | 1976-09-16 |
JPS51113135A (en) | 1976-10-06 |
JPS5623370B2 (sv) | 1981-05-30 |
US4002950A (en) | 1977-01-11 |
SE419012B (sv) | 1981-07-06 |
DE2608572C3 (de) | 1979-04-26 |
DE2608572B2 (de) | 1978-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
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