CN204441177U - 12kV intelligent electricity anti-theft vacuum circuit-breaker - Google Patents

Abstract

The utility model belongs to the field of intelligent electrical primary equipment, in particular to a 12kV intelligent electric-stealing anti-vacuum circuit breaker. It includes a vacuum circuit breaker body, a voltage transformer for metering and a current transformer for metering. The terminal is electrically connected to one end of the measuring current transformer through a copper bar; the incoming line end of the vacuum circuit breaker body is electrically connected to an upper incoming line terminal, and the other end of the measuring current transformer is electrically connected to a lower outgoing line terminal. The utility model has the comprehensive functions of a vacuum circuit breaker and a high-voltage metering box, does not need a special metering cabinet, saves investment and land occupation, and has a compact structure and reliable insulation. Electrical hazard contacts.

Description

12kV intelligent anti-theft vacuum circuit breaker

technical field

The utility model belongs to the field of intelligent electrical primary equipment, in particular to a 12kV intelligent electric-stealing anti-vacuum circuit breaker.

Background technique

The electric energy metering device is a steelyard used by the power supply enterprise to measure the power supply. Whether it operates accurately and can effectively prevent electricity theft is directly related to the economic benefits of the power supply enterprise. The existing circuit breaker only has the switch function, and the high-voltage electric energy metering device has the following main problems:

(1) The anti-stealing performance is not considered. The secondary circuit of the high-voltage electric energy metering device is open and installed, and the voltage and current terminals are exposed. The secondary circuit is often connected in series with instruments and meters that have nothing to do with high-voltage electric energy measurement. Any point may become a hidden danger of electricity theft.

(2) The transportation department of the power supply bureau equips each 10kV line with a vacuum circuit breaker and protective device to protect and control the line; the metering department of the power supply bureau equips a prepaid switch and installs a high-voltage metering device, and its secondary components use plug-in cards Prepaid electricity meters can be used to realize local prepayment control. This design scheme will lead to repeated configuration of high-voltage vacuum circuit breakers and scattered equipment installation.

(3) Some high-voltage electric energy metering devices cannot adapt to the open-air environment. Long-term operation causes oxidation, corrosion, rust, and increased contact resistance of the current and voltage loops, which affects the metering accuracy.

Contents of the invention

The purpose of this utility model is to provide a 12kV intelligent anti-stealing vacuum circuit breaker in order to solve the shortcomings of the above-mentioned background technology.

The technical solution adopted in the utility model is: a 12kV intelligent anti-stealing vacuum circuit breaker, including a sealed vacuum circuit breaker body, a voltage transformer for metering and a current transformer for metering, the inlet end of the vacuum circuit breaker body It is electrically connected with the metering voltage transformer through a cable, and the outlet end of the vacuum circuit breaker body is electrically connected with one end of the metering current transformer through a copper bar; the inlet end of the vacuum circuit breaker body is electrically connected with The upper incoming line terminal, the other end of the metering current transformer is electrically connected to the lower outgoing line terminal; the vacuum circuit breaker body includes an insulating cylinder, a vacuum interrupter, a conductive clip, a soft connection, an insulating pull rod, an opening and closing operation pull rod and The first mechanism box, the lower end of the insulating cylinder communicates with the first mechanism box, the vacuum interrupter, the conductive clip, the soft connection, and the insulating rod are sequentially arranged in the insulating cylinder from top to bottom, and the lower end of the insulating rod extends to In the mechanism box, the opening and closing operation pull rod is connected with the insulating pull rod and arranged outside the first mechanism box.

Further, it also includes a sealed second mechanism box, the voltage transformer for metering is installed in the second mechanism box, the current transformer for metering is fixed on the top of the second mechanism box, the first mechanism box and the second mechanism box Both mechanism boxes are fixed on the base, suspension rings are provided on both sides of the top edge of the first mechanism box and the second mechanism box, and handles are respectively provided on both ends of the top edge of the second mechanism box.

The integrated design of the anti-stealing vacuum circuit breaker of the utility model has the comprehensive functions of the vacuum circuit breaker and the high-voltage metering box, does not need a special metering cabinet, saves investment and land occupation, and has a compact structure and reliable insulation. Line point and an outlet point, there is no hidden contact for stealing electricity.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is a side view of the utility model.

Fig. 3 is a top view of the utility model.

Fig. 4 is the electrical wiring diagram when the utility model works.

In the figure: 1-vacuum circuit breaker body; 2-upper incoming terminal; 3-insulating cylinder; 4-vacuum interrupter; 5-conductive clip; 6-soft connection; 7-insulating rod; ; 9-first mechanism box; 10-current transformer for metering; 11-lower outlet terminal; 12-second mechanism box; 13-voltage transformer for metering; 14-base;

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the utility model, but they do not limit the utility model.

As shown in Figures 1-3, the utility model includes a sealed vacuum circuit breaker body 1, a current transformer 10 for metering and a voltage transformer 13 for metering. The devices 13 are electrically connected by cables, and the outlet end of the vacuum circuit breaker body 1 is electrically connected to one end of the metering current transformer 10 by a copper bar; the inlet end of the vacuum circuit breaker body 1 is electrically connected with an upward The other end of the metering current transformer 10 is electrically connected to the lower outlet terminal 11 . All the components adopt integrated design and sealing, which can realize the comprehensive function of vacuum circuit breaker and high-voltage metering box. It has compact structure and reliable insulation. When installing a cable, only one entry point and one exit point are required. Hidden danger of electricity theft.

In the above scheme, a sealed second mechanism box 12 may also be included, the metering voltage transformer 13 is installed in the second mechanism box 12, the metering current transformer 10 is fixed on the top of the second mechanism box 12, and the first mechanism box 9 and the second mechanism box 12 are all fixed on the base 14, the first mechanism box 9 and the second mechanism box 12 top both sides edges are all provided with suspension rings 15, and the two ends edges of the second mechanism box 12 top are respectively provided with handles 16. Set up rings and handles for easy transportation.

The vacuum circuit breaker body 1 includes an insulating cylinder 3, a vacuum interrupter 4, a conductive clip 5, a soft connection 6, an insulating rod 7, an opening and closing operation rod 8 and a first mechanism box 9. The lower end of the insulating cylinder 3 is connected to the first The mechanism box 9 is connected, the vacuum interrupter 4, the conductive clip 5, the soft connection 6, and the insulating rod 7 are sequentially arranged in the insulating cylinder 3 from top to bottom for sealing and insulation, and the lower end of the insulating rod 7 extends to the first mechanism box 9 inside. The opening and closing operation pull rod 8 is connected with the insulating pull rod 7 and arranged outside the first mechanism box 9 to form the opening and closing operation mechanism of the vacuum circuit breaker body. The upper incoming line terminal 2, the vacuum interrupter 4, the conductive clip 5, and the soft connection 6 are all connected to conduct electricity through copper bars.

As shown in Figure 4, the electrical primary wiring diagram of the utility model anti-stealing vacuum circuit breaker when it is working, wherein the external isolating switch 19 is integrated with the vacuum circuit breaker body 1 and installed, and can be directly integrated on the upper incoming line terminal 2 . The voltage transformer 13 for metering and the current transformer 10 for metering are electrically connected to the smart meter 17, the vacuum circuit breaker body 1 is electrically connected to the management terminal 18, the smart meter 17 measures electric energy, and completes the power consumption detection function of large power customers; The management terminal 18 obtains data from the smart meter, and uses GSM/CDMA to communicate with the management master station to complete functions such as load control, meter reading, and electricity theft prevention. The management master station of the metering department, the management master station collects the power consumption information of multiple points and judges whether there is a power theft problem through power balance.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (2)

1. A 12kV intelligent anti-theft vacuum circuit breaker is characterized in that: it comprises a sealed vacuum circuit breaker body (1), a metering current transformer (10) and a metering voltage transformer (13), the vacuum circuit breaker The inlet end of the vacuum circuit breaker body (1) is electrically connected to the metering voltage transformer (13) through a cable, and the outlet end of the vacuum circuit breaker body (1) is connected to one end of the metering current transformer (10) through a cable. The copper bar is electrically connected; the incoming line end of the vacuum circuit breaker body (1) is electrically connected to the upper incoming line terminal (2), and the other end of the metering current transformer (10) is electrically connected to the lower outgoing line terminal (11); The vacuum circuit breaker body (1) includes an insulating cylinder (3), a vacuum interrupter (4), a conductive clip (5), a soft connection (6), an insulating pull rod (7), and an opening and closing operation pull rod (8) and the first mechanism box (9), the lower end of the insulating cylinder (3) communicates with the first mechanism box (9), the vacuum interrupter (4), the conductive clip (5), the soft connection (6), the insulation The pull rods (7) are sequentially arranged in the insulating cylinder (3) from top to bottom, and the opening and closing operation pull rods (8) are connected with the insulating pull rods (7) and arranged outside the first mechanism box (9). 2. The 12kV intelligent anti-stealing vacuum circuit breaker according to claim 1, characterized in that it also includes a sealed second mechanism box (12), and the metering voltage transformer (13) is installed in the second mechanism box (12), the metering current transformer (10) is fixed on the top of the second mechanism box (12), and the first mechanism box (9) and the second mechanism box (12) are fixed on the base (14) Above, both sides of the top edge of the first mechanism box and the second mechanism box are provided with lifting rings (15), and the top two edges of the second mechanism box are respectively provided with handles (16).