CN203103798U - Suspension type outdoor and low-voltage comprehensive distribution metering box - Google Patents

Abstract

The utility model discloses a suspension type outdoor and low-voltage comprehensive distribution metering box. Two mounting supports for suspension are arranged at the top of the metering box; rainproof tents are arranged on two sides of the top of the metering box; rainproof eaves are arranged in front and back of the top of the metering box; the metering box comprises a switching room, a metering room and a power distribution room, wherein the switching room and the metering room are of hinged opening door structures; the power distribution room is of a side opening door structure; the metering box is characterized in that the switching room is arranged on the right side; a disconnecting switch and a lightning arrester are assembled in the switching room; the metering room is arranged in the middle; a metering gauge, a metering current transformer, a reactive compensation controller and a capacitor are assembled in the metering room; the power distribution room is arranged on the left side; a residual-current circuit breaker, a molded case circuit breaker, a three-pole circuit breaker, a single-pole circuit breaker and a contactor are assembled in the power distribution room; and electrical components in the three rooms are electrically connected through a copper busbar or a copper lead. The suspension type outdoor and low-voltage comprehensive distribution metering box has the beneficial effects that the appearance is attractive, the layout is reasonable, the electric appliances are flexible to assemble, especially outdoor rainproof and snow-protection effects are ideal, the breaking capacity is high, the dynamic thermal stability is good, and the protection level is high.

Description

A suspended outdoor low-voltage comprehensive power distribution metering box

technical field

The utility model belongs to the technical field of electric power installation, in particular to a suspended outdoor low-voltage comprehensive power distribution metering box.

Background technique

With the development of the economy, urban and rural power grids have higher and higher requirements for the development of public distribution transformer calculation boxes. The production of outdoor low-voltage complete switchgear for rated voltage 400V and rated current less than 630A undoubtedly has a great market and application prospects. The existing products on the market have problems of one kind or another in terms of convenient installation, maintenance, meter reading, and shortening the time for handling accidents. The company combines years of experience in power installation and construction, and according to the requirements of the national urban and rural power grid construction and transformation and power supply departments, Based on the principles of safety, economy, reasonableness and reliability, and referring to the existing products on the market, a suspended outdoor low-voltage comprehensive power distribution metering box is designed and developed, which integrates power conversion, distribution, control, metering, compensation and protection. , This product has the characteristics of beautiful layout, novel structure, flexible electrical assembly, and ideal outdoor rain and snow protection effect, especially suitable for outdoor power, lighting and power distribution low-voltage integrated distribution cabinets.

Contents of the invention

The purpose of the utility model is to develop a low-voltage integrated power distribution cabinet more suitable for outdoor use, specifically a suspended outdoor low-voltage integrated power distribution metering box.

The utility model is provided with two mounting supports for suspension on the top, with rain awnings on both sides of the top, and rain eaves on the front and back of the top. It is composed of a switch room, a metering room and a power distribution room. It is a side-opening door structure, and its characteristic is that the right side is the switch room, and the switch room is equipped with knife melting switch and lightning arrester; the middle part is the metering room, and the metering room is equipped with design meters, metering current transformers, reactive power compensation controllers, and capacitors; The left side is the power distribution room, which is equipped with leakage circuit breakers, molded case circuit breakers, three-pole circuit breakers, single-pole circuit breakers and contactors; the electrical components in the three rooms are electrically connected through copper busbars or copper wires.

There are small doors at the front and rear of the switch room, a busbar inlet lead hole is set above the right side plate of the switch room, an outlet lead wire hole is set under the right side plate, and a knife fuse switch operating handle is provided on the right side plate corresponding to the knife fuse switch.

The metering room is divided into two parts, the front and the back, with small doors at the front and back, windows on the upper part of the door, metering meters and current mutual induction coils installed in the front of the metering room, reactive power compensation controllers installed in the upper part behind the metering room, and a lower part behind the metering room. The half installs the capacitor.

The power distribution room is divided into two parts, the front and the back, with small doors in the front and back, a leakage circuit breaker in the front of the power distribution room, and a molded case circuit breaker, three-pole circuit breaker, single-pole breaker and contactor in the rear of the power distribution room. The outlet lead hole is set under the left side panel of the electric energy distribution room.

At the construction site, open the front door of the metering room, install the meter and metering current transformer in the metering room according to the correct wiring method, and confirm that the transformation ratio is correct. After the transformer platform is installed, the utility model is hoisted below the transformer platform, and is suspended and installed on the channel steel under the outdoor transformer platform through installation supports. Open the small door at the back of the switch room, insert the lead-in end of the busbar into the lead-in hole of the lead-in end of the busbar, install it on the inlet side of the knife fuse switch, connect the zero line to the zero busbar hole, and fix the wiring harness. Then open the small front door of the power distribution room, unscrew the cover of the leakage circuit breaker, lead the feeder cable from the lead hole of the outlet end to the negative side of the leakage circuit breaker, cover the cover of the leakage circuit breaker, and connect the neutral line to the zero busbar , Finally, properly ground the grounding bolts outside the box for protection. The utility model has a total of six small doors at the front and back, which makes operation and maintenance more convenient; there are lead holes under the left and right side panels, which can make the wiring more reasonable (the lead holes at the outlet ends that are not used temporarily can be closed with insulating resin plates); the door panels and side panels The heat dissipation holes arranged in a rectangular array on the board not only have a beautiful appearance and good heat dissipation effect, but also have a good anti-rain and snow effect.

The beneficial effect of the utility model is that the appearance is beautiful, the layout is reasonable, and the electrical assembly is flexible, especially the outdoor rain and snow prevention effect is ideal. Moreover, it has high segmentation capacity, good dynamic and thermal stability, and high protection level.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model.

Fig. 2 is a schematic right view of the utility model.

Fig. 3 is a schematic left view of the utility model.

Fig. 4 is a schematic diagram of the internal front view structure of the utility model.

Fig. 5 is a schematic diagram of the internal rear view structure of the utility model.

Fig. 6 is a schematic diagram of the working principle of the utility model.

In the figure, 00- busbar inlet (A, B, C, N), 1- installation support, 2- rainproof eaves, 3- rainproof awning, 4- front small door, 5- rear small door, 6- heat dissipation Hole, 7-lead wire hole of busbar inlet end, 8-lead wire hole of outlet end, 9-knife fuse switch operating handle, 10-misoperation prevention handle, 11-other gram bar hook hole, 20-switch room, 21-knife fuse switch , 22-lightning arrester, 30-metering room, 31-window, 32-metering meter, 33-metering current transformer, 34-terminal, 35-reactive power compensation controller, 36-capacitor, 40-power distribution room, 41-leakage circuit breaker, 42-molded case circuit breaker, 43-three-pole circuit breaker, 44-single-pole circuit breaker, 45-contactor, 50-outlet terminal.

Detailed ways

In conjunction with Fig. 1～Fig. 6, the specific embodiment of the utility model is described as follows:

A suspended outdoor low-voltage comprehensive power distribution metering box, the top of which is provided with two hanging installation supports 1, the top sides are equipped with rain canopies 3, the top and the front and rear are provided with rain eaves 2, and the switch room 20, the metering room 30 and the power distribution room are provided. 40 structure, the switch room 20 and the metering room 30 are side-by-side door structures, and the power distribution room 40 is a side-opening door structure, which is characterized in that the right side is the switch room 20, and the switch room 20 is equipped with a knife fuse switch (HR) 21 and a lightning arrester 22; The middle part is a metering room 30, which is equipped with a design meter (DT) 32, a metering current transformer (LHa, LHb, LHc) 33, a reactive power compensation controller 35, and a capacitor 36; the left side is an electric energy distribution room 40, Electric energy distribution room 40 is equipped with leakage isolation circuit breaker (1ZK) 41, molded case circuit breaker (2ZK) 42, three-pole circuit breaker (4ZK) 43, single-pole circuit breaker (10ZK) and contactor (11ZK) 45; The electrical components in the room are electrically connected through copper busbars or copper wires (TMY) (not shown in the figure).

Small doors 4 and 5 are respectively opened in the front and back of the switch chamber 20, a busbar inlet lead hole 7 is set above the right side plate of the switch room 20, an outlet lead hole 8 is set under the right side plate, and a knife melting switch 21 is set on the right side plate correspondingly. Fusion switch operating handle 9.

The metering chamber is divided into two parts, the front and the rear, each with a small door, and a window 31 is arranged on the upper part of the small door. A meter 32 and a current mutual induction coil 33 are installed in front of the metering chamber, and a reactive power compensation controller 35 is installed in the upper half of the metering chamber. , a capacitor 36 is installed in the lower half of the metering chamber rear.

The power distribution room 40 is divided into two parts, the front and the back, each with a small door, a leakage circuit breaker 41 is installed in front of the power distribution room 40, and a molded case circuit breaker 42, a three-pole circuit breaker 43, and a single-pole circuit breaker are installed in the rear of the power distribution room 40. Device 44 and contactor 45, the electric energy distributing chamber 40 left side plate bottoms are provided with wire end lead hole 8.

At the construction site, open the front door of the metering room 30, install the metering meter 32 and the metering current transformer 33 in the metering room 30 according to the correct wiring method, and confirm that the transformation ratio is correct. After the transformer platform is installed, the utility model is hoisted below the transformer platform, and is suspended and installed on the channel steel under the outdoor transformer platform through the installation support 1. Open the small door 5 at the rear of the switch room 20, insert the busbar inlet 00 into the busbar inlet lead hole 7, install it on the inlet side of the knife fuse switch 21, connect the zero line to the zero busbar hole, and fix the wiring harness. Then open the front wicket 4 of the electric energy distribution chamber 40, unscrew the leakage circuit breaker 41 cover, feeder cables are introduced from the outlet end lead hole 8 and connected to the negative side of the leakage circuit breaker 41, cover the leakage circuit breaker 41 cover, zero The line is connected to the zero busbar, and finally the grounding bolt outside the box is properly grounded for protection. The number of circuit breakers is determined according to the number of circuits distributed by the user. In this specific embodiment, there are six circuits.

The utility model has a total of six small doors at the front and back, which makes the operation and maintenance more convenient; the outlet lead holes 8 are arranged under the left and right side plates, which can make the wiring more reasonable (the temporarily unused outlet lead holes 8 can be closed with insulating resin plates); The heat dissipation holes 6 arranged in a rectangular array on the box door panel and the box side plate are not only beautiful in appearance, but also good in heat dissipation effect, especially good in preventing rain and snow.

Claims (4)

1. comprehensive electricity distributing and metering case of suspension type outdoor low voltage, two suspension mounting supports are established at its top, both sides, the top canopy of setting up defences, the rain eaves of setting up defences before and after the top, be made of switch gear room, measuring room and power distribution chamber, switch gear room and measuring room are the clamshell doors structure, and the power distribution chamber is the side opening structure, it is characterized in that the right side is the switch gear room, switch gear room's installing switch with knifeshaped fuse and lightning arrester; The middle part is a measuring room, measuring room installing gauge table meter, metering current mulual inductor, idle compensating control, capacitor; The left side is the power distribution chamber, power distribution chamber installing residual current circuit breaker, breaker of plastic casing, three-pole breaker, single-pole circuit breaker and contactor; Three indoor electric elements are electrically connected by copper bus-bar or copper conductor.

2. according to the comprehensive electricity distributing and metering case of the described suspension type outdoor low voltage of claim 1, it is characterized in that respectively offering wicket before and after the described switch gear room, the switch gear room establishes bus inlet side fairlead in the right plate top, and the right plate below sets out the line end fairlead, the corresponding switch with knifeshaped fuse of right plate is established the switch with knifeshaped fuse operating grip.

3. according to the comprehensive electricity distributing and metering case of the described suspension type outdoor low voltage of claim 1, it is characterized in that described measuring room is divided in two parts, wicket is respectively established in front and back, form is established on wicket top, gauge table meter and electric current mutual inductor are installed in measuring room the place ahead, measuring room rear the first half is installed idle compensating control, and measuring room rear the latter half is installed capacitor.

4. according to the comprehensive electricity distributing and metering case of the described suspension type outdoor low voltage of claim 1, it is characterized in that described power distribution chamber is divided in two parts, wicket is respectively established in front and back, the place ahead, power distribution chamber is provided with residual current circuit breaker, disconnected our device and the contactor of rear, power distribution chamber installing breaker of plastic casing, three-pole breaker, one pole, left plate below in power distribution chamber sets out the line end fairlead.

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