Trip braking device of breaker
A technology for actuating devices and circuit breakers, which is applied in the field of low-voltage electrical equipment, can solve the problems of slow response, changing the pressure distribution inside the module, and poor operation reliability, and achieves the effects of rapid action process, simple structure, and convenient manufacture and installation
Active Publication Date: 2007-08-01
JIANGSU DAQO KFINE ELECTRIC
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Problems solved by technology
Most of the existing circuit breaker tripping actuators have defects such as complex structure, changing the pressure distribution inside the module, poor operation reliability, and slow response speed.
Method used
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[0012] As shown in the figure, the housing 1 of the present invention is composed of an upper cover 11 and a lower cover 12, the actuating arm 2 can rotate between the upper cover and the lower cover, and the actuating end 21 of the actuating arm extends out of the housing for connection to conventional mechanisms. The actuating rotating arm also includes two pistons 22 connected as a whole. The two pistons are respectively arranged at the openings 132 of the two airflow passages 13 in the housing and can slide along the airflow passages. Corresponding to the radius of rotation of the movable arm. The two airflow passages 13 are not communicated with each other, and their air inlets 131 are respectively arranged on the upper cover and the lower cover, so that when the housing is installed between two adjacent poles of the circuit breaker, the air intake of the two airflow passages The ports 131 can respectively communicate with the arc extinguishing areas of two adjacent pole...
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The invention belongs to low voltage electric equipment, it relates to breaker releasing activating device which is used to trip device when contactor is excluded by short current in low voltage breaker. The device includes a casing constructed by upper cover and lower cover, a activating rotating arm is mounted between the upper cover and lower cover by rotating axes, the activating end of the activating rotating arm is throw out of the casing, elastic component which limits the rotation is set between the activating rotating arm and base of casing; two air flow channels are set in base which is corresponding with the upper cover and lower cover, the air intakes of the two air flow channels are separately opened on the upper cover and lower cover; piston which can slide along air flow channel is set in fore opening of the two air flow channels, the two pistons and activating rotating arm are a integral. The invention is simple, the production and installation is convenient, and the process of action is quick and reliable.
Description
technical field [0001] The invention belongs to low-voltage electrical equipment, and relates to a tripping actuation device for a circuit breaker used to trigger a mechanism to make it act when a short-circuit current occurs in a low-voltage circuit breaker and the contacts are repelled. Background technique [0002] During the working process of the low-voltage circuit breaker, when a fault such as a short circuit occurs, causing the current flowing through the contacts to exceed the preset threshold, the moving and static contacts are repelled under the action of electric repulsion. The function of the circuit breaker tripping actuator is to trigger the mechanism in time during this process to perform the tripping action. Most of the existing circuit breaker tripping actuators have defects such as complex structure, changing the pressure distribution inside the module, poor operation reliability, and slow response speed. Contents of the invention [0003] The technical...
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IPC IPC(8): H01H71/10
Inventor 冯晓林陈晓菊孙永雷
Owner JIANGSU DAQO KFINE ELECTRIC