FR2269188A1 - Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second trip - Google Patents
Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second tripInfo
- Publication number
- FR2269188A1 FR2269188A1 FR7507611A FR7507611A FR2269188A1 FR 2269188 A1 FR2269188 A1 FR 2269188A1 FR 7507611 A FR7507611 A FR 7507611A FR 7507611 A FR7507611 A FR 7507611A FR 2269188 A1 FR2269188 A1 FR 2269188A1
- Authority
- FR
- France
- Prior art keywords
- trip
- breaker
- trips
- smaller
- type whose
- Prior art date
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
-
- 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
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
-
- 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
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The second secondary trip of the power circuit breaker takes over the tripping function when the first secondary trip fails. This first secondary trip is of electrodynamic type whose natural cycle, together with that of the power circuit breaker, is smaller than the natural cycle of the second secondary trip. Preferably, however, both secondary trips are triggered simultaneously. The system may contain two capacitors, charged by an operating voltage source, which may be sequentially discharged across the excitation winding of the electrodynamic trip. A thyristor and a bistable relay with two opening contacts may be series-connected to the excitation coil, the opening relay contact being each arranged between a capacitor and the excitation coil and operated in a push-pull mode.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742420465 DE2420465C3 (en) | 1974-04-24 | Electrical circuit breaker with a first and a second secondary release |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2269188A1 true FR2269188A1 (en) | 1975-11-21 |
Family
ID=5914135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7507611A Withdrawn FR2269188A1 (en) | 1974-04-24 | 1975-03-11 | Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second trip |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5712491B2 (en) |
CH (1) | CH578248A5 (en) |
FR (1) | FR2269188A1 (en) |
SE (1) | SE7504687L (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8902169A (en) * | 1989-08-25 | 1991-03-18 | H A Hoeflake Fa | Circuit protection system for electrical distribution cables - protects long cables carrying relatively small normal currents by responding to heat and magnetic fields |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6475744A (en) * | 1987-09-14 | 1989-03-22 | Shin Meiwa Ind Co Ltd | Drainage system |
-
1975
- 1975-03-11 FR FR7507611A patent/FR2269188A1/en not_active Withdrawn
- 1975-04-11 CH CH460575A patent/CH578248A5/xx not_active IP Right Cessation
- 1975-04-21 JP JP4855575A patent/JPS5712491B2/ja not_active Expired
- 1975-04-23 SE SE7504687A patent/SE7504687L/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8902169A (en) * | 1989-08-25 | 1991-03-18 | H A Hoeflake Fa | Circuit protection system for electrical distribution cables - protects long cables carrying relatively small normal currents by responding to heat and magnetic fields |
Also Published As
Publication number | Publication date |
---|---|
CH578248A5 (en) | 1976-07-30 |
JPS5712491B2 (en) | 1982-03-11 |
JPS50146879A (en) | 1975-11-25 |
DE2420465B2 (en) | 1976-04-08 |
DE2420465A1 (en) | 1975-10-30 |
SE7504687L (en) | 1975-10-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4341989A (en) | Device for phase compensation and excitation of an asynchronous machine operating as a generator | |
US2445806A (en) | Induction motor braking system | |
ES463586A1 (en) | Means for detecting a loss of vacuum in vacuum-type circuit interrupters used in polyphase a.c. vacuum circuit breaker | |
FR2269188A1 (en) | Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second trip | |
GB1230318A (en) | ||
RU2002122075A (en) | Device for starting a three-phase asynchronous squirrel-cage motor from an autonomous source of comparable power | |
US2626378A (en) | Means for more easy starting of inverters at light loads | |
SU729743A1 (en) | Device for boosted switching-on of electromagnetic relay | |
SU1105980A1 (en) | Device for supplying d.c.to load | |
SU535655A1 (en) | Device for protection of three-phase consumers against phase failure | |
US2899626A (en) | brown | |
FR2326795A1 (en) | Starting winding disconnection circuit for AC motor - has time delay circuit forming source of triggering current for gate closing power terminals switch | |
SU1162006A1 (en) | Device for overload protection of electric motor | |
SU113161A1 (en) | Device for automatic start-up of a single-phase capacitor motor | |
SU106848A2 (en) | Device for switching on and off electrical current receivers | |
SU1037193A1 (en) | Device for preliminary checking of three-phase electrical motor winding insulator | |
SU1094124A1 (en) | Device for dc electric motor dynamic braking | |
SU107164A1 (en) | Device for the protection of asynchronous electric motors | |
SU1531224A1 (en) | Decoder | |
SU832729A1 (en) | Decade relay counter | |
SU1826104A1 (en) | Device for current protection of sectionalizer busducts | |
SU866651A1 (en) | Device for automatic redundancy of power supply source of three-phase induction motor | |
SU141920A1 (en) | Device for blocking the maximum current protection of power transformers | |
SU598581A3 (en) | High voltage switch | |
SU1053244A1 (en) | Device for starting a.c. motor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |