Self-protection shunt excitation release
A shunt release, electromagnetic release technology, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of automatic elimination, electromagnetic release coil burning, etc., to achieve protection coil, stable and reliable electrical performance, universal strong effect
Inactive Publication Date: 2010-06-09
SUZHOU FUTURE ELECTRICAL APP
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Problems solved by technology
[0002] The existing technology is that when remote control is performed, the alternating current is directly input into the release coil to make the electromagnetic release operate. The high voltage at both ends of the coil cannot be automatically eliminated after the electromagnetic release operates, and it must be broken by external auxiliary contacts. Once the auxiliary contact fails to meet its breaking index, it will cause the coil of the electromagnetic release to be continuously energized and burn out due to heat
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[0013] From figure 1 It can be seen from the figure that the electromagnetic release includes the coil 2 in the yoke 1, the iron core 3 in the coil 2, the spring 4 in the iron core 3, the screw 5 in the spring 4, and the electronic controller 6 installed on the electromagnetic release. The upper part of the internal coil frame is insulated and isolated from the metal yoke by an epoxy ester gasket 7 to form an integrated structure. When a momentary high voltage is generated at both ends of the coil, the screw 5 hits the drawbar of the frame circuit breaker outward under the action of the electromagnetic field to open the circuit breaker. 4 reset under the recovery effect.
[0014] From figure 2 It can be seen from the figure that in the electronic controller, the AC power is introduced from the input terminals P1 and P2, and after being stepped down by the capacitor step-down circuit composed of R1 and C1, it enters the rectification and filtering circuit composed of R0, D1~...
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The invention discloses a reliable-performance self-protection shunt excitation release, the coil of which can automatically power off to protect the coil from being burnt out after the shunt excitation release completes the release movement and can also be electrified for a long time. The self-protection shunt excitation release comprises a coil in a magnet yoke and a movable core in the coil, wherein one end of a screw rod is connected to the upper surface of the movable core, and the other end thereof protrudes out of a circular hole in the magnet yoke; and a spring ring is sheathed outside the screw rod. The invention is characterized in that the front end of the electromagnetic tripper coil is additionally provided with an electronic controller. The invention has the advantages that the electronic controller is additionally arranged to the front end of the coil of the shunt excitation tripper to realize the function of automatic power-off, thereby protecting the coil; the product has the advantages of simple structure, strong universality and stable and reliable electrical performance, and can be electrified for a long time; and the invention is widely used in the technical field of low-voltage apparatus.
Description
technical field [0001] The invention relates to a shunt release for remotely controlling the opening of a circuit breaker, in particular to a structural improvement of a self-protected shunt release, which belongs to the technical field of low-voltage electrical appliances. Background technique [0002] The existing technology is that when remote control is performed, the alternating current is directly input into the release coil to make the electromagnetic release operate. The high voltage at both ends of the coil cannot be automatically eliminated after the electromagnetic release operates, and it must be broken by external auxiliary contacts. Once the auxiliary contact cannot meet its breaking index, it will cause the coil of the electromagnetic tripper to be continuously energized and burn out due to heat. Contents of the invention [0003] The object of the present invention is to: aim at the above-mentioned defects, to propose a self-protection device with reliable ...
Claims
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IPC IPC(8): H01H71/24
Inventor 陈富
Owner SUZHOU FUTURE ELECTRICAL APP