FR2085956B3 - - Google Patents
Info
- Publication number
- FR2085956B3 FR2085956B3 FR717112492A FR7112492A FR2085956B3 FR 2085956 B3 FR2085956 B3 FR 2085956B3 FR 717112492 A FR717112492 A FR 717112492A FR 7112492 A FR7112492 A FR 7112492A FR 2085956 B3 FR2085956 B3 FR 2085956B3
- Authority
- FR
- France
- 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
- H02H3/24—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 undervoltage or no-voltage
- H02H3/253—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 undervoltage or no-voltage for multiphase applications, e.g. phase interruption
-
- 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
- G01R19/145—Indicating the presence of current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- 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
- H02H3/325—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 involving voltage comparison
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Power Conversion In General (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2686470A | 1970-04-09 | 1970-04-09 | |
JP1884871A JPS464222A (fr) | 1970-04-09 | 1971-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2085956A3 FR2085956A3 (fr) | 1971-12-31 |
FR2085956B3 true FR2085956B3 (fr) | 1974-02-15 |
Family
ID=53052580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR717112492A Expired FR2085956B3 (fr) | 1970-04-09 | 1971-04-08 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3636541A (fr) |
JP (1) | JPS464222A (fr) |
CA (1) | CA929226A (fr) |
DE (1) | DE2117388A1 (fr) |
FR (1) | FR2085956B3 (fr) |
GB (1) | GB1340714A (fr) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4938933U (fr) * | 1972-07-07 | 1974-04-05 | ||
US3919703A (en) * | 1974-04-08 | 1975-11-11 | Bertea Corp | Fault detection system for transducers |
US4008417A (en) * | 1974-07-29 | 1977-02-15 | General Equipment And Manufacturing Company, Inc. | Phase loss detector |
US4021703A (en) * | 1975-06-02 | 1977-05-03 | Westinghouse Electric Corporation | Phase imbalance detection circuit |
SE419810B (sv) * | 1975-06-23 | 1981-08-24 | Charbonnages Ste Chimique | Anordning for avkenning av vexelstrom |
JPS5219238A (en) * | 1975-08-06 | 1977-02-14 | Matsushita Electric Ind Co Ltd | Phase deficit detection apparatus |
US4024438A (en) * | 1975-10-30 | 1977-05-17 | Coilcraft, Inc. | Delta phase loss detector |
JPS5450297A (en) * | 1977-09-28 | 1979-04-20 | Maruko Denki Kouji Kk | Electric wire burglar alarm safety device |
JPS5543393U (fr) * | 1978-09-15 | 1980-03-21 | ||
US4346307A (en) * | 1978-11-03 | 1982-08-24 | S & C Electric Company | Voltage-unbalance detector for polyphase electrical systems |
US4354214A (en) * | 1979-09-11 | 1982-10-12 | Walton John F | Motor protection circuit |
FR2468238A1 (fr) * | 1979-10-16 | 1981-04-30 | Telemecanique Electrique | Dispositif electronique de protection d'un moteur electrique contre les surcharges et la perte d'une phase de la tension alternative triphasee d'alimentation |
US4379317A (en) * | 1981-04-27 | 1983-04-05 | Westinghouse Electric Corp. | Solid-state load protection system having loss of phase sensing |
US4393430A (en) * | 1981-06-08 | 1983-07-12 | Hughes Jack H | Multi-phase failure detector |
JPS58139626A (ja) * | 1982-02-10 | 1983-08-19 | 三菱電機株式会社 | 欠相検出回路 |
NL8300449A (nl) * | 1983-02-07 | 1984-09-03 | Philips Nv | Optische indikatie-inrichting. |
US4507713A (en) * | 1983-10-11 | 1985-03-26 | Allied Corporation | Wide frequency multi-phase undervoltage detection circuit |
US5557180A (en) * | 1993-06-30 | 1996-09-17 | Sgs-Thomson Microelectronics, Inc. | Circuit and method for operating a 3-phase motor with a uni-coil phase commutation scheme |
US5665256A (en) * | 1995-12-19 | 1997-09-09 | The Esab Group, Inc. | Cutting or welding system having phase loss detector and method of detecting phase loss for same |
CN102411824A (zh) * | 2011-12-23 | 2012-04-11 | 浙江师范大学 | 智能端子报警器电路 |
-
1970
- 1970-04-09 US US26864A patent/US3636541A/en not_active Expired - Lifetime
-
1971
- 1971-03-31 JP JP1884871A patent/JPS464222A/ja active Pending
- 1971-04-08 DE DE19712117388 patent/DE2117388A1/de active Pending
- 1971-04-08 FR FR717112492A patent/FR2085956B3/fr not_active Expired
- 1971-04-08 CA CA110033A patent/CA929226A/en not_active Expired
- 1971-04-19 GB GB2471671*A patent/GB1340714A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3636541A (en) | 1972-01-18 |
FR2085956A3 (fr) | 1971-12-31 |
GB1340714A (en) | 1973-12-12 |
DE2117388A1 (de) | 1971-10-28 |
JPS464222A (fr) | 1971-11-11 |
CA929226A (en) | 1973-06-26 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |