CN205004126U - Modular metering mutual inductor case - Google Patents

Abstract

The utility model proposes a combined metering transformer box, which is characterized in that it includes a box body, bottom card slots are arranged around the inner bottom of the box body, and vertical card slots are respectively set on the inner side walls of the front plate of the box body The bottom of the box body is provided with a bead connected with the transformer, two insulating bakelite boards are arranged on the two vertical slots, and four semicircular wire holes are respectively opened on the two insulating bakelite boards. The utility model changes the original transformer box from a fixed type to a combined type, improves the installation efficiency of the transformer box, has strong safe operation performance, and is easy to popularize and use.

Description

Combined metering transformer box

technical field

The utility model relates to a transformer box, in particular to a combined metering transformer box.

Background technique

The transformer box is a kind of equipment installed on the low-voltage side terminal of the transformer, which is convenient for measurement, maintenance and management. The body is closed. During the regular measurement survey, it was found that due to the long-term exposure of the transformer box to the outdoors, the long-term operation of the box body was seriously aged and corroded, which often caused voltage loss, short circuit and burning at the connection between the transformer and the low-voltage side lead wire. In order to prevent such accidents occur, the box structure design of the existing transformer box must be improved.

The structure of the traditional transformer box has many defects such as narrow operating space, low insulation degree, small three-phase spacing, and easy corrosion and aging of the box material, which leads to long installation and operation time, and it is necessary to connect the low-voltage side power lead to the box On the low-voltage bolt on the upper wall, pass the low-voltage side power line through the transformer and press it into the equipment clamp. The low-voltage side power line that has been crimped with the equipment clamp is set on the low-voltage terminal of the transformer. According to the statistics of the situation when the staff completed the replacement of the transformer box in the case of a power outage at the work site, it was found that the average time spent was 55 to 60 minutes, which was low in work efficiency and prolonged the power supply recovery time.

Contents of the invention

The technical problem to be solved by the utility model is to design a combined metering transformer box, which has accurate metering, convenient on-site installation and high safety performance.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a combined metering transformer box, including a box body, a bottom card slot is arranged around the inner bottom of the box body, and the inside of the front plate of the box body Vertical slots are respectively set on the two end walls, and a bead connected with the transformer is set at the bottom of the box body. Two insulating glue boards are arranged on the two vertical slots, and four semicircular wire holes are respectively opened on the two insulating glue boards.

The diameters of the semicircular wire holes opened on the two insulating bakelite boards are the same.

The utility model adopts the combined metering transformer box designed by the above technical scheme, which is changed from the original fixed type to the combined type, which greatly improves the installation efficiency of the transformer box. The utility model has the advantages of simple structure and strong safe operation performance. A large number of on-site tests show that the utility model has remarkable practical effects and is easy to be widely popularized.

Description of drawings

Fig. 1 shows the structural schematic diagram of the combined metering transformer box of the present invention.

detailed description

The structure of the combined metering transformer box of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, the utility model combined metering transformer box includes a box body 1, which is provided with a box cover 9, and the outer shell of the box body 1 is made of stainless steel. Bottom card slots 8 are set around the inner bottom of the box body 1, vertical card slots 7 are respectively set on the inner side walls of the front plate of the box body 1, and a bead 4 connected to the transformer is provided at the bottom of the box body 1. The hole spacing of the low-voltage side screws on different types of transformers produced by different manufacturers is used to perforate both sides of the bead 4, and the purpose of fixing the box body 1 is achieved by adjusting the position of the perforation of the horizontal bead and the perforation of the low-voltage side screw. Two vertical draw-in grooves 7 are provided with insulating bakelite 3 and insulating bakelite 6, and vertical draw-in groove 7 is set to be convenient to two pieces of insulating bakelite up and down side by side and put into. According to the wire diameter of the power cord, four semicircular wire holes 5 are provided on the insulating bakelite board 6, four semicircular wire holes 2 are provided on the insulating bakelite board 3, the diameters of the four semicircular wire holes 5 and the four semicircular wire holes 2 Both have the same diameter of 20mm. The four semicircular wire holes 5 provided on the insulating bakelite board 6 are symmetrical to the corresponding four semicircular wire holes 2 provided on the insulating bakelite board 3. The opening of the bakelite board is connected to the low-voltage terminal of the transformer. The insulating glue board 3 and the insulating glue board 6 are combined insulating glue boards.

When in use, the box body 1 of the present utility model is set on the low-voltage side terminal of the transformer, the bead 4 is penetrated into the two ends of the box body with bolts to the transformer bolt holes for fastening, and the insulating glue board 6 is put into the vertical slot 7 Put the power cord through the insulating bakelite 6 to the position of the low-voltage terminal of the transformer, then put the insulating bakelite 3 into the vertical slot 7 and seal it with the insulating bakelite 7 .

Since the transformer box of the utility model is changed from the original fixed type to the combined type, the design is novel, the structure is simple, the installation efficiency of the transformer box is greatly improved, and it has the value of general promotion.

Claims (2)

1. A combined metering transformer box, comprising a box body, is characterized in that a bottom draw-in groove is established around the inner bottom of the box body, and vertical draw-in grooves are respectively established on the front plate inner side walls of the box body, The bottom of the box body is provided with a bead connected with the transformer, and two insulating bakelite boards are provided on the two vertical slots, and four semicircular wire holes are respectively provided on the two insulating bakelite boards. 2. The combined metering transformer box according to claim 1, characterized in that the diameters of the semicircular wire holes opened on the two insulating bakelite boards are the same.