GB761993A - Improvements in and relating to electrical induction relays - Google Patents

Improvements in and relating to electrical induction relays

Info

Publication number
GB761993A
GB761993A GB3078153A GB3078153A GB761993A GB 761993 A GB761993 A GB 761993A GB 3078153 A GB3078153 A GB 3078153A GB 3078153 A GB3078153 A GB 3078153A GB 761993 A GB761993 A GB 761993A
Authority
GB
United Kingdom
Prior art keywords
disc
magnets
magnet
spindle
induction
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
GB3078153A
Inventor
Albert Russell Van C Warringto
John Walter Freeman Smith
Raymond Harold Bevan Smith
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.)
English Electric Co Ltd
Original Assignee
English Electric 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
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB3078153A priority Critical patent/GB761993A/en
Publication of GB761993A publication Critical patent/GB761993A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H53/00—Relays using the dynamo-electric effect, i.e. relays in which contacts are opened or closed due to relative movement of current-carrying conductor and magnetic field caused by force of interaction between them
    • H01H53/10—Induction relays, i.e. relays in which the interaction is between a magnetic field and current induced thereby in a conductor

Landscapes

  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

761,993. Induction relays. ENGLISH ELECTRIC CO., Ltd. Nov. 5, 1954 [Nov. 6. 1953], No. 30781/53. Class 38(5) To facilitate adjustment of the characteristics of a time-overcurrent induction relay employing a shaped induction disc (i.e. a non-circular, slotted, or perforated disc) braked by a permanent magnet, the magnet has two different independent adjustments, each of which varies the braking torque. As shown, the shaped disc 1 rotates between a pair of two-pole permanent magnets 30 providing a closed magnetic flux path crossing the disc. The magnets 30 are carried by a structure 25 slidable on a guide 26 and fixed at the desired distance from the disc spindle 2 by a screw 27 co-operating with a slot. The upper magnet 30 is pivoted at 28 on an eccentric screw, thus permitting adjustment of ,the air gap, the magnet being held in adjusted position by screws 29. In an alternative construction (not shown) one of the magnets is adjustable by rotation about an axis parallel to the spindle 2 whereby the registering area between the opposed magnets is varied. In a further construction (not shown) a flux diverter is employed. The disc 1 is driven by an electromagnet 24 against the bias of a spiral spring 8 so that a silver contact cylinder 13 carried by the spindle 2 engages a dome 17 on a contact arm 15.
GB3078153A 1953-11-06 1953-11-06 Improvements in and relating to electrical induction relays Expired GB761993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3078153A GB761993A (en) 1953-11-06 1953-11-06 Improvements in and relating to electrical induction relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3078153A GB761993A (en) 1953-11-06 1953-11-06 Improvements in and relating to electrical induction relays

Publications (1)

Publication Number Publication Date
GB761993A true GB761993A (en) 1956-11-21

Family

ID=10313036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3078153A Expired GB761993A (en) 1953-11-06 1953-11-06 Improvements in and relating to electrical induction relays

Country Status (1)

Country Link
GB (1) GB761993A (en)

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