Protective device and method for electrical monitoring and signaling that the protective device has been tripped
A technology of protection device and safety device, applied in emergency protection device, protection switch operation/release mechanism, circuit, etc., can solve the problems of reducing monitoring reliability, unable to guarantee safety monitoring, expensive and other problems
Inactive Publication Date: 2020-07-24
SIEMENS AG
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
The disadvantage is of course that it significantly reduces the reliability of the monitoring
As a result, reliable security monitoring cannot be guaranteed
[0004] The disadvantage of electronic safety monitoring is that they reduce the surge voltage strength of the fuse and are more expensive in addition
Method used
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Embodiment Construction
[0026] figure 1 Represents a protection device 1, which has a fuse 2 and a monitoring and signal sending unit 3, the latter is used to monitor and send a signal to indicate that the fuse 2 is blown. The monitoring and signal sending unit 3 has a housing 3a, which is installed on the fuse 2 and figure 1 The middle is opened means that the housing is divided into two for the sake of clarity, and the first half has been removed in each figure (that is, only the second half of the housing 3a can be seen in all the figures). The fuse 2 has a hollow insulator 2a and two electrical contacts facing each other in the form of blade contacts 4. The two blade contacts 4 are connected by a fuse (not shown) inside the insulator 2a. The signal member 5 is led out from the edge body 2a, which bends downward in a hook shape and maintains the signal spring 6 in the form of a leaf spring in a (first) preloaded state. If the fuse is melted, release the signal spring 6.
[0027] In addition, the mo...
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The invention relates to a safety device with a fuse and a monitoring and signaling unit, and the safety device comprises a signal spring (6) which is released when the fuse is melted and then abuts a stop element (8). In order to achieve a mechanical safety monitoring that has a high reliability, it is proposed that the signal spring (6) belongs to a release device (7) on which the stop element (8) is arranged, and by a triggering spring (14) that is released by the striking, the signal spring (6) can be moved from a holding position to a release position. When the release device (7) is in a release position, a switch (10) held by the release device (7) in a first switching state, switches to a second switching state, and the second switching state signals each of the molten fuse element. Furthermore, the invention relates to a method for sending an electric signal for triggering a protection device.
Description
Technical field [0001] The invention relates to a protection device with a fuse and a method for electrical monitoring and signaling to indicate that the protection device, especially the fuse, has been triggered. Background technique [0002] A protection device including a safety device in the form of a fuse is known, which has a hollow insulator on which electrical contacts are arranged opposite to each other and connected to each other by a fuse. In order to signal that the fuse is triggered, that is, the fuse is blown, the signal piece is drawn from the insulator. The signal piece in the form of a metal hook pulls the signal spring towards the insulator, thereby keeping it pretensioned. When the fuse is melted, the signal spring is released by the signal member and the signal spring blocks against the stopper (stop surface). The stopper is provided at one end of the double lever that can swing around the axis. The swing of the double lever by the signal spring causes the ...
Claims
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IPC IPC(8): H01H71/10H01H71/12H01H9/10
CPCH01H9/10H01H71/10H01H71/12H01H37/76H01H85/306
Inventor J.胡斯曼F.内斯
Owner SIEMENS AG