GB1443730A - Electric switching apparatus - Google Patents

Electric switching apparatus

Info

Publication number
GB1443730A
GB1443730A GB5023573A GB5023573A GB1443730A GB 1443730 A GB1443730 A GB 1443730A GB 5023573 A GB5023573 A GB 5023573A GB 5023573 A GB5023573 A GB 5023573A GB 1443730 A GB1443730 A GB 1443730A
Authority
GB
United Kingdom
Prior art keywords
switching
pin
magnetic
springs
holding device
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
GB5023573A
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.)
Hazemeijer BV
Original Assignee
Hazemeijer BV
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 Hazemeijer BV filed Critical Hazemeijer BV
Publication of GB1443730A publication Critical patent/GB1443730A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/122—Automatic release mechanisms with or without manual release actuated by blowing of a fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/02—Energy stored by the attraction or repulsion of magnetic parts

Landscapes

  • Fuses (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Breakers (AREA)

Abstract

1443730 Switching apparatus HAZEMEIJER BV 29 Oct 1973 [30 Oct 1972] 50235/73 Heading H1N Three-phase switching apparatus comprising an insulating stationary portion 1 in which fixed contacts, not shown, are embedded and three symmetrically arranged movable switching caps 3, one shown in Fig. 1, each containing bridging conductors has a switching-on mechanism consisting of a movable cylinder 4 to which the caps 3 are attached together with symmetrically arranged shoes 6 slidable on guides 7 towards a magnetic holding device comprising an arrangement of permanent magnets 10 which retains an armature 11 on the cylinder 4 when the apparatus is in the switched-on position against the stored energy of a set of springs 9 fixedly located on a bracket 8 and attached to the shoes 6 so that the springs are stretched during the switching-on process. In the magnetically retained position the armature 11 rests against a flat 15 of a D-shaft 12 which can be rotated by means of a lever arm 16 being pressed by a pin 17 to disengage the magnetic hold and the apparatus is then switched off by the stored energy of the springs 9. In series connection with its switching cap 3 each phase of the switching apparatus is provided with a fuse 18, Fig. 2, incorporating a striking pin 22 which, when a fuse blows, pushes a permanent magnet 21 towards another permanent magnet 24 located on the other side of a wall 23 forming part of the insulating stationary portion 1. As shown in Fig. 3 the permanent magnets 24 are mounted on the arms of a spider 25 normally lying against an abutment pin 27 and which forms the rotor of a magnetic motor rotatable under magnetic unbalance conditions to rotate clockwise about a pivot 26 so that a projection 28 causes a pendulum 29 to swing anticlockwise about a pivot shaft 30 until its arm carrying a bevelled portion 32 strikes an abutment 31 during which movement the bevelled portion 32 passes over the end of pin 17 and pushes the pin axially to release the magnetic holding device as described. The shaft 30 has an extension 33 by which the pendulum can be reset or be swung manually to release the magnetic holding device. Specification 1,099,901 is referred to.
GB5023573A 1972-10-30 1973-10-29 Electric switching apparatus Expired GB1443730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL727214678A NL152106B (en) 1972-10-30 1972-10-30 ELECTRIC SWITCHING DEVICE WITH MAGNETIC LOCKING DEVICE.

Publications (1)

Publication Number Publication Date
GB1443730A true GB1443730A (en) 1976-07-21

Family

ID=19817264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5023573A Expired GB1443730A (en) 1972-10-30 1973-10-29 Electric switching apparatus

Country Status (9)

Country Link
US (1) US3859611A (en)
JP (1) JPS5735536B2 (en)
BE (1) BE806406A (en)
CA (1) CA987714A (en)
CH (1) CH560962A5 (en)
FR (1) FR2204862B1 (en)
GB (1) GB1443730A (en)
NL (1) NL152106B (en)
SE (1) SE387003B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724565B2 (en) * 1974-05-29 1982-05-25
JPS593036U (en) * 1982-06-29 1984-01-10 株式会社昭和製作所 Hydraulic shock absorber damping force adjustment device
CN102412085B (en) * 2010-09-20 2014-09-10 西门子公司 Double-break electrical contact device and isolating switch using same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1813191A (en) * 1926-04-30 1931-07-07 Westinghouse Electric & Mfg Co High speed circuit breaker
US3234347A (en) * 1963-08-08 1966-02-08 David Olof Hagglund Protective switching arrangement with demountable fuse carrier
GB1143805A (en) * 1966-08-04

Also Published As

Publication number Publication date
NL152106B (en) 1977-01-17
CA987714A (en) 1976-04-20
JPS5735536B2 (en) 1982-07-29
CH560962A5 (en) 1975-04-15
NL7214678A (en) 1974-05-02
DE2354133A1 (en) 1974-05-09
DE2354133B2 (en) 1976-09-16
SE387003B (en) 1976-08-23
FR2204862A1 (en) 1974-05-24
FR2204862B1 (en) 1977-03-11
BE806406A (en) 1974-04-23
JPS4977181A (en) 1974-07-25
US3859611A (en) 1975-01-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee