CN202549600U

CN202549600U - Novel plastic housing type low-voltage current transformer with primary coil

Info

Publication number: CN202549600U
Application number: CN2012201093052U
Authority: CN
Inventors: 黄炳辉; 李东风; 樊红平
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Wenzhou CHINT power supply Co., Ltd.
Priority date: 2012-03-21
Filing date: 2012-03-21
Publication date: 2012-11-21
Anticipated expiration: 2022-03-21

Abstract

The utility model discloses a novel plastic shell type low-voltage current transformer with a primary coil. A mounting support leg is arranged below a shell of a transformer and used for the fixed installation of the current transformer, the shell of the current transformer is made of polycarbonate material through pressing, the outer part of the current transformer is square, the middle part of the current transformer is cylindrical, a primary current coil and a secondary current coil in the central cavity of the plastic shell are all wound on an iron core, a primary wiring board is installed at the central position of the cylinder of the plastic shell, and a wire outgoing head of the primary coil is welded on the primary wiring board; an aluminum nameplate is installed in a card slot of the plastic shell and cannot be taken out randomly; and a protective cover is arranged at a secondary wiring terminal of the current transformer and is installed on a protective cover bracket, and the protective cover and the protective cover bracket are all provided with small lead seal round holes. The novel plastic shell type low-voltage current transformer has the function of current and electric energy measurement or replay protection, the current transformer is provided with the primary coil, the secondary wiring terminal is provided with the protective cover, the nameplate cannot fall off or be replaced, so the novel plastic shell type low-voltage current transformer has the function of preventing electricity stealing.

Description

The plastic shell low voltage current transformer of novel band primary winding

Technical field

The utility model belongs to the metering device technical field; Specifically relate to a kind of plastic shell low voltage current transformer of novel band primary winding; Have electric current, electric energy measurement or relaying protection function, itself has primary winding current transformer, and the secondary connection terminal has protective cover; The aluminium nameplate has slip-off preventing and the anti-characteristics that are replaced, and makes product have anti-stealing electricity function.

Background technology

In the prior art; Low-pressure casting formula current transformer exists following deficiency: 1, low-pressure casting formula current transformer nameplate adopts adhesive sticker to stick on the product shell usually at present; Nameplate comes off in transportation with in using easily; Cause product failure perhaps to be changed nameplate and carry out stealing, cause very big loss to Utilities Electric Co. by the lawless person; 2, the most of current transformers that use at present do not have primary winding, and the middle window that adopts cable to pass instrument transformer is usually realized the conversion of electric current, needs the multiturn punching sometimes, and the punching number of turn is wayward, installs also inconvenient; When 3, Current Transformer Secondary connects electric energy meter, because binding post exposes, easily by lawless person's short circuit and stealing.

Summary of the invention

The utility model mainly is to solve above-mentioned existing in prior technology technical problem, provides a kind of low pressure instrument transformer special-purpose wiring solder terminal.

The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: a kind of plastic shell low voltage current transformer of novel band primary winding; Comprise transformer casing; Be provided with the installation leg below the transformer casing, be used for current transformer is fixedly mounted, said transformer casing is pressed into makrolon material; The outside is square, and the middle part is the cylinder bodily form; First and second current coil in the plastic casing central cavity all is wound on the iron core, and the primary connection plate is installed in the cylinder center of plastic casing, and the terminal of primary winding is welded on the primary connection plate; The aluminium nameplate is installed in the draw-in groove of plastic casing, can not arbitrarily take out; Over cap is equipped with at the secondary connection terminal place of instrument transformer, and over cap is installed on the over cap support, and over cap and over cap support are equipped with the lead sealing small sircle hole.

During use, an outside lead directly is connected on the primary connection plate, does not need repeatedly punching, and is easy to assembly; The over cap that is provided with at secondary connection terminal place can be closed the secondary connection terminal; Prevented that effectively binding post is by short circuit; After Utilities Electric Co. utilized lead sealing small sircle hole on over cap and the over cap support with the over cap lead sealing, the lawless person can not short circuit secondary connection terminal and stealing; The aluminium nameplate is installed in the draw-in groove of plastic casing, can not arbitrarily take out, and avoids causing product failure or is changed nameplate and carry out stealing by the lawless person, therefore the utlity model has characteristics such as simple in structure, reasonable in design.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is a kind of left TV structure sketch map of the utility model.

Embodiment

Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.

Embodiment: referring to Fig. 1 and Fig. 2, be provided with below the transformer casing 1 of the utility model leg 2 is installed, be used for current transformer is fixedly mounted, transformer casing 1 usefulness makrolon material is pressed into, and the outside is square, and the middle part is the cylinder bodily form; First and second current coil in plastic casing 1 central cavity all is wound on the iron core, and primary connection plate 6 is installed in the cylinder center of plastic casing 1, and the terminal of primary winding is welded on the primary connection plate 6; Aluminium nameplate 7 is installed in the draw-in groove of plastic casing 1, can not arbitrarily take out; Over cap 4 is equipped with at secondary connection terminal 3 places of instrument transformer, and over cap 4 is installed on the over cap support 5, and over cap and over cap support are equipped with the lead sealing small sircle hole.

At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to the foregoing description, and many distortion can also be arranged.Every technical spirit according to the utility model is to any simple modification, equivalent variations and modification that above embodiment did, all should think the protection range that belongs to the utility model.

Claims

1. the plastic shell low voltage current transformer of a novel band primary winding; Comprise transformer casing (1); Be provided with below the transformer casing (1) leg (2) is installed, be used for current transformer is fixedly mounted, it is characterized in that said transformer casing (1) is pressed into makrolon material; The outside is square, and the middle part is the cylinder bodily form; First and second current coil in plastic casing (1) central cavity all is wound on the iron core, and primary connection plate (6) is installed in the cylinder center of plastic casing (1), and the terminal of primary winding is welded on the primary connection plate (6); Aluminium nameplate (7) is installed in the draw-in groove of plastic casing (1), can not arbitrarily take out; The secondary connection terminal (3) of instrument transformer locates to be equipped with over cap (4), and over cap (4) is installed on the over cap support (5), and over cap and over cap support are equipped with the lead sealing small sircle hole.