GB543687A - Improvements in phase balance condition electro-responsive devices - Google Patents
Improvements in phase balance condition electro-responsive devicesInfo
- Publication number
- GB543687A GB543687A GB17731/40A GB1773140A GB543687A GB 543687 A GB543687 A GB 543687A GB 17731/40 A GB17731/40 A GB 17731/40A GB 1773140 A GB1773140 A GB 1773140A GB 543687 A GB543687 A GB 543687A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotor
- field
- windings
- line
- sequence components
- 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
- 238000004804 winding Methods 0.000 abstract 3
- 230000004907 flux Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase 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
- H02H3/26—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
- H02H3/34—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 of a three-phase system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
543,687. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 16, 1940, No. 17731. Convention date, Dec. 16, 1939. [Class 38 (v)] Phase-unbalance in the line 1 ... 3 is indicated, and protected against, by means of an induction machine 8, the rotor 8' of which has windings 9 ... 11 energized by line transformers such that positive sequence components produce a counter-clockwise rotating field and negative components a clock-wise field. The former field is rendered stationary in space by synchronously roting the rotor 8<SP>1</SP> clock-wise by a motor 15 having its field windings, energized from potential transformer 18<SP>1</SP> in the line and its D.C. rotor 19 on the shaft 19<SP>1</SP> of rotor 8<SP>1</SP>. The resultant double-frequency flux due to negative sequence components produces eddy currents in a slit bimetallic cylinder 20 surrounding the rotor 8<SP>1</SP>, with the result that a contact 22 on its free end engages a contact 24 on an ambient-temperature compensating strip 27. By reversing the connections of two of the windings 3 .. 11, the arrangement may be made responsive to positive sequence components. Voltage unbalance may also be protected against. Specification 159,148, [Class 38 (v)], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US543687XA | 1939-12-16 | 1939-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB543687A true GB543687A (en) | 1942-03-09 |
Family
ID=21990552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17731/40A Expired GB543687A (en) | 1939-12-16 | 1940-12-16 | Improvements in phase balance condition electro-responsive devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB543687A (en) |
-
1940
- 1940-12-16 GB GB17731/40A patent/GB543687A/en not_active Expired
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