GB594979A - Improvements in and relating to electrical circuit breakers - Google Patents
Improvements in and relating to electrical circuit breakersInfo
- Publication number
- GB594979A GB594979A GB525245A GB525245A GB594979A GB 594979 A GB594979 A GB 594979A GB 525245 A GB525245 A GB 525245A GB 525245 A GB525245 A GB 525245A GB 594979 A GB594979 A GB 594979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- circuit
- breaker
- lever
- arm
- 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
- 238000010276 construction Methods 0.000 abstract 1
Classifications
-
- 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
- H01H3/3052—Linear spring motors
-
- 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
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
594,979. Automatic circuit-breakers. SOUTH WALES SWITCHGEAR, Ltd., and FARRER, S. March 2, 1945, No. 5252. [Class 38(v)] A circuit-breaker is closed by a mechanism wherein the energy of a resilient energy storing device is so transmitted through a rectilinearly moving member, a link and a shaft, that the torque required to reverse the shaft increases as the shaft rotates towards the position in which the switch is closed. Fig. 1 shows the mechanism in the open position of the circuit-breaker, which is actuated by rotation of the shaft 2. In this position springs 14 have been compressed by the counter-clockwise rotation of a manually - operated spindle 15 through links 16, 18, and a block 6 carrying tubes 11 on guides 12, a latch 19 engaging a pin 7 on the block 6. To close the circuitbreaker a spindle 21 is rotated manually or by remote control to cause a cam 22 to release the latch 19 from the pin 7. The block 6 is then forced upwards by the springs 14 and causes a link 5 pivoted at 7 to rotate a lever arm 3 secured to the shaft 2, which actuates the moving contacts through linkwork, part of which is shown in Fig. 3 at 25. Fig. 3 shows two sets of springs, one loaded and one unloaded, operating a common shaft 2, channels 9 guiding rollers 8 on the blocks 6. Buffer devices 23 stop the blocks 6 if the circuit-breaker closes easily, as on a small current. To prevent slow opening of the circuit-breaker by means of the spindle 15, a spring clutch, Fig. 6, comprising a spring 34 and a lever 33 may be fitted to an extension 2b of one end of the shaft 2. Recesses 31 in the lever 33 co-operate with projections 30 on the hub 3a of the adjacent arm 3, and the lever 33 trips the circuitbreaker through levers 36, 37 and an underset toggle mechanism. As an alternative to the construction shown in Fig. 6, the arm 3 may be loosely mounted on the shaft 2 and coupled to it through lost motion by a pin 40 and an abutment 39a on an arm 39, secured to the shaft 2, as shown in Fig. 7.
Publications (1)
Publication Number | Publication Date |
---|---|
GB594979A true GB594979A (en) | 1947-11-24 |
Family
ID=1628251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB525245A Expired GB594979A (en) | 1945-03-02 | Improvements in and relating to electrical circuit breakers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB594979A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001037297A1 (en) * | 1999-11-13 | 2001-05-25 | S & C Electric Company | Circuit interrupter and operating mechanism therefor |
-
1945
- 1945-03-02 GB GB525245A patent/GB594979A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001037297A1 (en) * | 1999-11-13 | 2001-05-25 | S & C Electric Company | Circuit interrupter and operating mechanism therefor |
US6696658B2 (en) * | 1999-11-13 | 2004-02-24 | S & C Electric Co. | Circuit interrupter and operating mechanism therefor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1356862A (en) | Stored-energy circuit breaker closing devices | |
GB1210102A (en) | Circuit interrupter | |
GB1393799A (en) | Circuit breaker | |
GB1180257A (en) | Improvements in Electrical Circuit Breakers of the Rotary Handle Type | |
GB594979A (en) | Improvements in and relating to electrical circuit breakers | |
GB930195A (en) | Improvements in operating mechanism for an electrical circuit breaker | |
US2152453A (en) | Operating mechanism | |
GB571997A (en) | Improvements in or relating to electric circuit breakers provided with overload release devices | |
GB1208853A (en) | High voltage switch having auxiliary latch operating means for the current interrupter | |
US2825787A (en) | Driving mechanisms for circuit breakers | |
GB1080983A (en) | Improvements in or relating to electric switchgear | |
US2784602A (en) | Snap action operating mechanism for switches | |
GB783657A (en) | Polyphase electrical circuit breaker with trip indicator | |
GB1227285A (en) | ||
GB753754A (en) | Improvements in and relating to driving mechanisms for electric circuit breakers | |
GB884450A (en) | Automatic electric circuit breakers | |
GB582643A (en) | Improvements in or relating to spring operating-mechanism for electric switchgear | |
GB1145959A (en) | Improvements relating to electric circuit breakers | |
GB962819A (en) | A single-pole or multipole electrical power circuit-breaker | |
GB763747A (en) | Electric circuit breaker operating mechanism | |
GB1418640A (en) | Electrical switchgear | |
GB1090933A (en) | Improvements in circuit breakers | |
US1589924A (en) | Electric switch | |
US1286101A (en) | Circuit-interrupter. | |
GB1277224A (en) | Electric switch mechanisms |