FR1433925A - Perfectionnements aux dispositifs de protection des circuits et de matériels électriques - Google Patents
Perfectionnements aux dispositifs de protection des circuits et de matériels électriquesInfo
- Publication number
- FR1433925A FR1433925A FR17390A FR17390A FR1433925A FR 1433925 A FR1433925 A FR 1433925A FR 17390 A FR17390 A FR 17390A FR 17390 A FR17390 A FR 17390A FR 1433925 A FR1433925 A FR 1433925A
- Authority
- FR
- France
- Prior art keywords
- circuits
- electrical equipment
- protection devices
- protection
- devices
- 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.)
- Expired
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
- H02H3/20—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 voltage
- H02H3/202—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 voltage for dc systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US368016A US3300659A (en) | 1964-05-18 | 1964-05-18 | Fail safe overvoltage alarm circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1433925A true FR1433925A (fr) | 1966-04-01 |
Family
ID=23449536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR17390A Expired FR1433925A (fr) | 1964-05-18 | 1965-05-18 | Perfectionnements aux dispositifs de protection des circuits et de matériels électriques |
Country Status (2)
Country | Link |
---|---|
US (1) | US3300659A (fr) |
FR (1) | FR1433925A (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3474293A (en) * | 1965-10-23 | 1969-10-21 | Fenwal Inc | Arc suppressing circuits |
US3526810A (en) * | 1967-03-07 | 1970-09-01 | Cary Instruments | Amplifier protection circuit |
US3441820A (en) * | 1967-08-18 | 1969-04-29 | Gen Time Corp | Timing system having electromechanical oscillator with fail-safe improvement |
US3502971A (en) * | 1968-01-10 | 1970-03-24 | Western Electric Co | Test circuit including oscillator means,trigger means and switch means for determining voltage drop |
GB1238950A (fr) * | 1968-09-27 | 1971-07-14 | ||
US3593273A (en) * | 1969-01-14 | 1971-07-13 | Babaco Research Inc | Automobile theft alarm |
US3668545A (en) * | 1969-11-03 | 1972-06-06 | Scott Inc H H | Apparatus for amplifier protection |
US3657663A (en) * | 1970-05-27 | 1972-04-18 | Westinghouse Electric Corp | Ac threshold amplifier for use in failsafe applications |
US3841712A (en) * | 1972-08-01 | 1974-10-15 | Borg Warner | Analyzer for control system which regulates vehicle braking |
US3816690A (en) * | 1972-09-18 | 1974-06-11 | Illinois Tool Works | Induction heating apparatus |
US3964039A (en) * | 1974-12-24 | 1976-06-15 | Monsanto Company | Luminescent solid state status indicators |
US4321530A (en) * | 1979-07-11 | 1982-03-23 | Sangamo Weston, Inc. | Multimeter with tone indication |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3060388A (en) * | 1959-11-27 | 1962-10-23 | Jersey Prod Res Co | D.c. signal to pulse rate converter |
US3112412A (en) * | 1960-07-06 | 1963-11-26 | North American Aviation Inc | Direct current threshold signal detector |
US3193709A (en) * | 1961-01-03 | 1965-07-06 | Collins Radio Co | Voltage monitoring and controlling device |
US3201776A (en) * | 1963-04-24 | 1965-08-17 | Int Research & Dev Co Ltd | Continuous vibration monitor device |
-
1964
- 1964-05-18 US US368016A patent/US3300659A/en not_active Expired - Lifetime
-
1965
- 1965-05-18 FR FR17390A patent/FR1433925A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3300659A (en) | 1967-01-24 |
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