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Circuit interrupter including linear actuator and manual pivot member

A technology of circuit interrupters and linear actuators, which can be used in circuits, electrical switches, electrical components, etc., and can solve problems such as inability to interrupt current

Inactive Publication Date: 2006-02-22
EATON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the contacts do not break quickly, there is a danger that the contacts will bond together and not be able to interrupt the current flow

Method used

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  • Circuit interrupter including linear actuator and manual pivot member
  • Circuit interrupter including linear actuator and manual pivot member
  • Circuit interrupter including linear actuator and manual pivot member

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0043] The present invention is described in connection with electrical vacuum circuit breakers, although the present invention can be applied to a wide variety of circuit interrupters, including without limitation other circuit breakers, load break switches and isolating load switches.

[0044] see figure 1 A three-pole power vacuum circuit breaker 1 includes a molded insulating case 3 divided into a rear portion 5 and a front portion 7 . An example of the housing 3 and rear portion 5 is disclosed in US Patent No. 6,373,358, incorporated herein by reference. Preferably, the rear casing 5 is molded with a plurality of pole cavities 9 (one of which is in figure 2 shown in ) as a separate piece. The exemplary circuit breaker 1 has three such pole chambers 9A, 9B, 9C, one for each phase of a three-phase power distribution system. Each cavity of the pole cavity 9 is accommodated with a pole mechanism 11, which includes such as figure 2 The vacuum interrupter 13 is shown.

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PUM

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Abstract

A power circuit interrupter (1) includes a housing (3) having an opening (49), one or more vacuum interrupters (13) including separable contacts (51), and an operating mechanism (33), supported by the housing, adapted to open and close the contacts. A linear actuator (50) cooperates with the operating mechanism to open and close the contacts, and is responsive to close signals (83, 79) to close the contacts. A pivotable trip member (47) protrudes through the opening of the housing and cooperates with the operating mechanism and the linear actuator to open the contacts when pivoted from a first position to a second position. A close circuit (71) includes an input inputting the close signal. A micro-switch (89) includes an operator (91) and a contact (93) electrically connected in series with the input of the close circuit. The operator is engaged by the pivotable trip member to open the contact in response to partial pivoting thereof from the first position toward the second position.

Description

technical field [0001] The present invention relates generally to circuit interrupters, and more particularly to circuit interrupters utilizing one or more pole mechanisms. Background technique [0002] Circuit interrupters protect electrical systems from electrical fault conditions such as current overloads, short circuits, and abnormal level voltage conditions. Typically, circuit interrupters include a spring powered operating mechanism that opens electrical contacts to interrupt electrical current through conductors of an electrical system in response to an abnormal condition. [0003] Circuit interrupters, such as electrical circuit breakers for systems operating above about 1000 volts, typically utilize vacuum interrupters as switching devices. For higher voltages, or more compact arrangements, each vacuum interrupter is housed in a separate case molded from an electrically insulating material such as styrenic plastic. These molded boxes are then bolted to the metal b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666H01H33/38H01H33/02
CPCH01H33/6662H01H33/022
Inventor D·E·帕尔米里R·N·克雷沃库赫B·R·莱恰J·J·赫格勒H·J·雷米克
Owner EATON CORP