A protective cover for a current transformer
A technology for current transformers and protective covers, which is applied in the field of protective covers for current transformers, which can solve the problems of exposed primary terminals and no protective devices, etc., achieve excellent UV resistance and aging resistance, prevent safety hazards, and facilitate installation.
Active Publication Date: 2019-06-11
CHINT ELECTRIC
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a protective cover for current transformer with good dustproof, antifouling and moistureproof functions, which solves the problem that the current transformer operates in an outdoor environment, and the primary terminal is exposed outside. The problem with no protection
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Embodiment Construction
[0012] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.
[0013] The invention is a protective cover for a current transformer, which is composed of two symmetrical semicircular rings, such as figure 1 As shown, it includes a stainless steel cover 1, an observation window 3, a sealing strip 2, and an insulating plate 4. The stainless steel cover 1 is composed of two independent semi-closed covers. The stainless steel cover 1 is fixed on the flange bottom plate of the expander of the current transformer through M6 stainless steel screws 5. The observation window 3 is fixed on the stainless steel cover 1 through the sealing strip 2. The insulating plate 4 is fixed on the stainless steel cover 1 by M6 stainless steel screws 5 . The waist hole on the stainless steel cover 1 can adjust the lateral and radial gaps of the same primary terminal of the protective cover to prevent dust and foreig...
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The invention discloses a protection cover for a current transformer. The protection cover is characterized by comprising a stainless steel cover, wherein the stainless steel cover is fixedly connected with a viewing window through a sealing strip; an insulating plate is fixed on the stainless steel cover. A primary wiring terminal of the current transformer is protected, so that safe and reliable running of the current transformer can be improved at a certain degree. The glass fiber reinforced plastic viewing window has superior ultraviolet resistance and aging resistance, so that the running condition of the primary wiring terminal can be viewed conveniently; the primary wiring terminal is sealed by the sealing strip effectively, so that the sealing strip has the functions of resisting dust, stains, moisture and the like; the stainless steel cover consists of two independent semi-enclosed covers, is convenient to mount, is high in mechanical strength, has an anti-aging effect and the like, and can be used for preventing the potential safety hazard of short circuit of the current transformer due to falling of foreign matters.
Description
technical field [0001] The invention relates to a protective cover for a current transformer, which belongs to the technical field of electrical equipment. Background technique [0002] A current transformer is an electrical device that isolates high voltages and converts large currents into small currents for measurement or protection systems. The current transformer operates in an outdoor environment, the primary terminal is exposed, and there is no protection device. Its shortcomings are: 1. In the case of wet weather, the terminal is prone to electrochemical reaction, which increases the contact resistance and affects the accuracy of the transformer; 2. It is susceptible to short-circuit faults caused by external foreign objects falling, which seriously endangers the mutual inductance. normal operation of the device. Therefore, the protection of the primary terminal has become an important factor to be considered in the safe and reliable operation of the transformer. ...
Claims
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IPC IPC(8): H01F27/29
CPCH01F27/29
Inventor 陈为强王中根胡寒立孟新志
Owner CHINT ELECTRIC