GB690048A - Improvements in or relating to electromagnetic relays - Google Patents

Improvements in or relating to electromagnetic relays

Info

Publication number
GB690048A
GB690048A GB1385850A GB1385850A GB690048A GB 690048 A GB690048 A GB 690048A GB 1385850 A GB1385850 A GB 1385850A GB 1385850 A GB1385850 A GB 1385850A GB 690048 A GB690048 A GB 690048A
Authority
GB
United Kingdom
Prior art keywords
armature
coil
energized
closed
circuit
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
Application number
GB1385850A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A Reyrolle and Co Ltd
Original Assignee
A Reyrolle and Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to BE503676D priority Critical patent/BE503676A/xx
Application filed by A Reyrolle and Co Ltd filed Critical A Reyrolle and Co Ltd
Priority to GB1385850A priority patent/GB690048A/en
Priority to FR1037874D priority patent/FR1037874A/en
Publication of GB690048A publication Critical patent/GB690048A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/16—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for conjoint, e.g. additive, operation of the relay

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

690,048. Electromagnetic relays; protective cut-out systems. REYROLLE & CO., Ltd., A., and CHRISP, G. F. May 24, 1951 [June 2, 1950], No. 13858/50. Class 38 (v) A relay with a pivoted armature A has an operating coil E and a controlling coil F which when energized produces flux in a closed or substantially-closed circuit FDB thereby increasing the reluctance of a member D which also carries the flux of the coil E and causing the armature A to be released. The coils E, F may, as shown, be arranged in series in a circuit and respectively shunted by opposed rectifiers M, M<SP>1</SP>. The Figure shows a protective system for coal-cutting machinery P. Current in the right direction, such as from a transformer S<SP>1</SP> through a rectifier R<SP>1</SP> when a switch R is closed will accordingly energize the coil E, cause the attraction of the armature A and the closing of a switch Q. A fault in the pilot circuit S will have the effect of shortcircuiting the rectifier R<SP>1</SP> so that alternating current will flow and the coils E and F will be energized respectively at alternate half-waves, which has the effect of releasing the armature A. Should there be a fault in the trailing cable Q1 a coil T will be energized which similarly causes a release of the armature A.
GB1385850A 1950-06-02 1950-06-02 Improvements in or relating to electromagnetic relays Expired GB690048A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE503676D BE503676A (en) 1950-06-02
GB1385850A GB690048A (en) 1950-06-02 1950-06-02 Improvements in or relating to electromagnetic relays
FR1037874D FR1037874A (en) 1950-06-02 1951-05-30 Improvements to electromagnetic relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1385850A GB690048A (en) 1950-06-02 1950-06-02 Improvements in or relating to electromagnetic relays

Publications (1)

Publication Number Publication Date
GB690048A true GB690048A (en) 1953-04-08

Family

ID=10030656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1385850A Expired GB690048A (en) 1950-06-02 1950-06-02 Improvements in or relating to electromagnetic relays

Country Status (3)

Country Link
BE (1) BE503676A (en)
FR (1) FR1037874A (en)
GB (1) GB690048A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11462345B2 (en) * 2019-09-30 2022-10-04 Rockwell Automation Technologies, Inc. Systems and methods for controlling contactor bounce

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924753A (en) * 1955-06-17 1960-02-09 English Electric Co Ltd Electrical protective relay systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11462345B2 (en) * 2019-09-30 2022-10-04 Rockwell Automation Technologies, Inc. Systems and methods for controlling contactor bounce

Also Published As

Publication number Publication date
BE503676A (en)
FR1037874A (en) 1953-09-23

Similar Documents

Publication Publication Date Title
GB690048A (en) Improvements in or relating to electromagnetic relays
US1661651A (en) Electromagnetic apparatus
GB517000A (en) Improvements relating to electromagnetic relays
US2281734A (en) Transfer system for electrically operated vehicles
US2192555A (en) Electrical control system
US2475662A (en) Electrical relay
GB475640A (en) Improvements in and relating to electromagnetic devices
GB675514A (en) Improvements in earth leakage protection for polyphase electrical circuits
US2435001A (en) Polarized electromagnetic relay
US1756924A (en) Unidirectional electrical inductive apparatus and system
GB448255A (en) Improvements in or relating to electric circuit breakers
US967192A (en) Relay for block-signal systems.
GB523438A (en) Electro-magnets
GB681232A (en) Improvements in remote control and protection of electric motors
GB644437A (en) Improvements in electrical generator systems for effecting protection from excessiveoutput voltage due to a fault in the generator or regulator
GB597302A (en) Improvements in or relating to relay apparatus for controlling electric power networks
GB625128A (en) Improvements in means for controlling the operation and release of electro-magnetic relays
GB588169A (en) Improvements relating to electrical relays
GB688594A (en) Improvements in selective electric protection systems
GB706284A (en) Combined thermal and electro-magnetic overload relay
GB296400A (en) Improvements relating to the control of point operating mechanism
GB636720A (en) Improvements in earth leakage protective systems for electric motors, cables and other apparatus
GB700472A (en) Improvements relating to electric control systems
GB418615A (en) Improvements in or relating to protective control systems for electric motors
GB563842A (en) Improvements in and relating to electric relays