Mutual inductor protection box
A technology of transformers and protective boxes, applied in the direction of inductors, transformers/inductor shells, transformers, etc., can solve the problems of current transformer damage and inconvenient installation of protective covers.
Pending Publication Date: 2019-09-17
STATE GRID CORP OF CHINA +1
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Problems solved by technology
[0007] The current transformer is provided with output terminals, and the existing protective cover is fixed to the current transformer by bolts when in use. It is necessary to fix the mounting plate on the transformer or set threaded holes on the transformer, which will cause damage to the current transformer. Easy to install the protective cover
[0008] The current transformer is provided with output terminals, and the existing protective cover is fixed to the current transformer by bolts when in use. It is necessary to fix the mounting plate on the transformer or set threaded holes on the transformer, which will cause damage to the current transformer. Easy to install the protective cover
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[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0042] Please also refer to figure 1 and figure 2 , the transformer protection box provided by the present invention will now be described. The transformer protection box includes a housing 1, a cover body 2, a pressure plate 3 and a driving device 4; the housing 1 is provided with an accommodation opening 11, and the accommodation opening 11 communicates with the interior of the housing 1; the cover The body 2 is fastened to the housing 1, and the cover 2 is detachably connected to the housing 1; there are multiple pressure plates 3 that are slidably connected ...
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The invention provides a mutual inductor protection box, and belongs to the technical field of mutual inductor protection. The protection box comprises a shell, a cover body, multiple pressing plates and a driving device. The shell is provided with a containing opening, and the containing opening communicates with the interior of the shell. The cover body is detachably connected with the shell. The multiple pressing plates are connected into the shell in a sliding mode and are detachably connected. The pressing plates are matched with the shell and are used for clamping an output terminal on the mutual inductor. The driving device is used for driving the pressing plates to slide to allow a wiring terminal of the mutual inductor to extend into the shell from the containing opening. The pressing plate is driven to move by the driving device, so that the pressing plates abut against the wiring terminal of the mutual inductor, the pressing plates and the shell cooperate with each other to clamp the wiring terminal, the protection box can be conveniently fixed on the mutual inductor, and damage to the mutual inductor is reduced. The cover body of the protection box is buckled with the shell, so that the wiring terminal in the shell is protected, and the damage to the wiring terminal is reduced.
Description
technical field [0001] The invention belongs to the technical field of transformer protection, and more specifically relates to a transformer protection box. Background technique [0002] A current transformer is an instrument that converts a large current on the primary side into a small current on the secondary side based on the principle of electromagnetic induction. [0003] The current transformer is composed of a closed iron core and a winding. Its primary side winding has a small number of turns and is connected in series with the current line to be measured. [0004] Therefore, it often has all the current of the line flowing, and the number of turns of the secondary side winding is relatively large. It is connected in series with the measuring instrument and the protection circuit. When the current transformer is working, its secondary side circuit is always closed, so the measurement The impedance of the series coil of the instrument and the protection circuit is ...
Claims
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IPC IPC(8): H01F27/02H01F38/30
CPCH01F27/02H01F38/30
Inventor 霍振星单亚静李成广刘诚刘亚楠田向阳步强书陈超田坤高子宾
Owner STATE GRID CORP OF CHINA