IE42983L - Current limiting circuit breaker - Google Patents
Current limiting circuit breakerInfo
- Publication number
- IE42983L IE42983L IE91075A IE91075A IE42983L IE 42983 L IE42983 L IE 42983L IE 91075 A IE91075 A IE 91075A IE 91075 A IE91075 A IE 91075A IE 42983 L IE42983 L IE 42983L
- Authority
- IE
- Ireland
- Prior art keywords
- current
- yoke
- bar
- conductor
- lever
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/42—Impedances connected with contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
1511881 Automatic circuit-breakers; electromagnetically operable switches SQUARE D CO 23 April 1975 [29 April 1974 (6)] 16721/75 Heading H1N An automatic circuit breaker is combined with a series current limiting electromagnetic switch in a single mounted two parts housing for the three phase switch. In each phase compartment 44, 45, 46 of the housing a resiliently mounted fixed contact assembly 50 is connected to terminal 60 and has main and arcing contacts 53, 54 co-operating with a movable contact 70 in region surrounded by a magnetic plate structure 130 adjacent a arc shoot 133. The movable contact is on a lever 67 coupled to a bar 63 common to the three phases and operable by toggle links mechanism 73 which includes a latch lever 76 retained by engagement in the centre phase armature of an adjustable overload electromagnet 111. The armature of the overload electromagnets 111 are all connected to a common bar 118 which is also movable by a lever 106 when the latter is released by a common thermal trip bar 105 acted upon by the phase bimetal strips 145. The bar 108 may be moved to the trip position by a manually operable push-button (Fig. 34, not shown). Current is carried from the movable contact lever by a flexible connector to a bar 133 on which the bimetal 145 is mounted and which connects to a conductor 142 coupled by a screw 146 to a part 148a of an approximately box-shaped structure 148 arranged in relation to a yoke 156 so that current passes along part 148a and the box sides to a part 150 in parallel with current in a part 150alpha. The current then passes through normally closed contacts 153, 155 on arms 152, 154 pivoted respectively at 168 and 170. On very heavy overload (e.g. 1000 amps) sufficient current will flow in part 148alpha for a biased armature 158 to be attracted to the yoke 156 so that a link 164 is moved upward and a pin 166 thereon rotates arm 152 about its pivot 168 and a further pin 167 is moved to permit arm 154 to move under the repulsion forces of the currents in the two arms 152, 154. As the contacts open within a rectangular magnetic yoke 182, which assists movement of the arc between contacts 153, 155 towards an arc chute 202 current passes in parallel with the arc along conductor 188b (assisting the effect of current in part 148a), conductor 188d (assisting in the magnetization of yoke 182), a connector 190 and through a positive temperature coefficient resistor 192 embedded in ceramic compound in a recess 45alpha in the moulded base 41. The other end of the resistor 192 is connected through a conductor 199 (which also passes through the yoke 182) to the same terminal member 184 as a flexible connector 178 coupled to the arm 154. Features of the combined breaker and switch are claimed in divisional Specifications 1,511,882, 1,511,883, 1,511,884, 1,511,885 and 1,511,886.
[GB1511881A]
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE507/80A IE42986B1 (en) | 1974-04-29 | 1975-04-23 | Electric circuit interrupting device |
IE505/75A IE42984B1 (en) | 1974-04-29 | 1975-04-23 | Electric circuit interrupting device |
IE506/80A IE42985B1 (en) | 1974-04-29 | 1975-04-29 | Electric circuit interrupting device |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/465,399 US3944953A (en) | 1974-04-29 | 1974-04-29 | Current limiting circuit breaker |
US05/465,012 US3943473A (en) | 1974-04-29 | 1974-04-29 | Current limiting circuit breaker |
US05/465,010 US3943472A (en) | 1974-04-29 | 1974-04-29 | Current limiting circuit breaker |
US05/465,011 US3946346A (en) | 1974-04-29 | 1974-04-29 | Current limiting circuit breaker |
US05/465,397 US3956723A (en) | 1974-04-29 | 1974-04-29 | Current limiting circuit breaker |
US05/465,398 US3943316A (en) | 1974-04-29 | 1974-04-29 | Current limiting circuit breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
IE42983L true IE42983L (en) | 1975-10-29 |
IE42983B1 IE42983B1 (en) | 1980-12-03 |
Family
ID=27560024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE91075A IE42983B1 (en) | 1974-04-29 | 1975-04-23 | Current limiting circuit breaker |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS6237499B2 (en) |
CA (1) | CA1043840A (en) |
CH (1) | CH613809A5 (en) |
DE (1) | DE2519092C2 (en) |
FR (1) | FR2280188B1 (en) |
GB (1) | GB1511881A (en) |
IE (1) | IE42983B1 (en) |
IT (1) | IT1032765B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2802553B1 (en) * | 1978-01-19 | 1979-01-18 | Siemens Ag | Low-voltage circuit breaker with split insulating material housing |
US4255732A (en) * | 1978-10-16 | 1981-03-10 | Westinghouse Electric Corp. | Current limiting circuit breaker |
NL176724C (en) * | 1979-06-11 | 1985-05-17 | Hazemeijer Bv | PROTECTION DEVICE FOR SELECTIVELY SWITCHING OFF NETWORK SECTIONS OF AN ELECTRIC ENERGY DISTRIBUTION NETWORK AND AN ENERGY DISTRIBUTION NETWORK PROVIDED WITH MULTIPLE SELECTIVE PROTECTION DEVICES. |
DE3016435A1 (en) * | 1980-04-29 | 1981-11-19 | Christian Geyer GmbH & Co, 8500 Nürnberg | Electric power protection switch - has electrodynamic switch connected in parallel with trip mechanism fitted with two electromagnets |
GB9002678D0 (en) * | 1990-02-07 | 1990-04-04 | Mk Electric Ltd | Improvements in or relating to electric switches |
JPH0531491U (en) * | 1991-09-27 | 1993-04-23 | アイワ株式会社 | Inner earphones |
DE102017129657A1 (en) | 2017-07-10 | 2019-01-10 | Dehn + Söhne Gmbh + Co. Kg | Arrangement for the non-reversible detection and display of electrical overcurrents or current limits by means of a pre-assembled conductor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR657067A (en) * | 1928-05-10 | 1929-05-16 | Improvements to electric arc blowing devices in circuit breakers and switches | |
CH136162A (en) * | 1928-11-07 | 1929-10-31 | Naether Ernst | Maximum current switch. |
US3068379A (en) * | 1957-04-11 | 1962-12-11 | Fed Pacific Electric Co | Circuit protective apparatus |
US3136921A (en) * | 1957-12-10 | 1964-06-09 | Westinghouse Electric Corp | Circuit breakers |
US3813619A (en) * | 1962-05-18 | 1974-05-28 | Gen Electric | Current-limiting circuit breaker |
-
1975
- 1975-04-17 CA CA225,213A patent/CA1043840A/en not_active Expired
- 1975-04-23 IE IE91075A patent/IE42983B1/en unknown
- 1975-04-23 GB GB1672175A patent/GB1511881A/en not_active Expired
- 1975-04-25 FR FR7512944A patent/FR2280188B1/en not_active Expired
- 1975-04-28 IT IT6807675A patent/IT1032765B/en active
- 1975-04-29 CH CH548775A patent/CH613809A5/en not_active IP Right Cessation
- 1975-04-29 DE DE19752519092 patent/DE2519092C2/en not_active Expired
- 1975-04-30 JP JP5245375A patent/JPS6237499B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1511881A (en) | 1978-05-24 |
DE2519092A1 (en) | 1975-10-30 |
AU8046275A (en) | 1976-10-28 |
JPS6237499B2 (en) | 1987-08-12 |
CA1043840A (en) | 1978-12-05 |
FR2280188B1 (en) | 1986-05-02 |
CH613809A5 (en) | 1979-10-15 |
IT1032765B (en) | 1979-06-20 |
IE42983B1 (en) | 1980-12-03 |
JPS50149980A (en) | 1975-12-01 |
FR2280188A1 (en) | 1976-02-20 |
DE2519092C2 (en) | 1982-02-04 |
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