A compact alternative low-voltage switchgear

Abstract

A compact alternative low-voltage switchgear includes a front enclosure and a rear enclosure connected to the rear of the front enclosure. The front enclosure contains an incoming line compartment, a metering compartment, a secondary wiring compartment, and a circuit breaker mounting compartment. The incoming line compartment and the metering compartment are vertically aligned and interconnected. The secondary wiring compartment is located beside the incoming line compartment and the metering compartment, and a first partition is provided between the secondary wiring compartment and the incoming line compartment and the metering compartment. The circuit breaker mounting compartment is located below the metering compartment and the secondary wiring compartment, and a second partition is provided between the circuit breaker mounting compartment and the metering compartment and the secondary wiring compartment. Ventilation holes are provided on both the second partition and the first partition. The rear enclosure contains a capacitor bank switch compartment and a capacitor mounting compartment, located vertically and vertically respectively. This invention provides a compact alternative low-voltage switchgear with high space utilization, a reasonable layout, and good heat dissipation and maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage power distribution equipment technology, and specifically to a compact alternative low-voltage switchgear. Background Technology

[0002] Currently, low-voltage switchgear is generally 2000mm high and 600mm deep. In the past, three cabinets of this size were needed to fit, i.e., three 2000*800*600mm cabinets, which did not make full use of the installation space for components. The original cabinet design was traditional, but the size of transformer substations on the market is getting smaller and smaller, and the size of components is becoming more compact and functional. Therefore, it is necessary to optimize the layout of low-voltage switchgear for a more compact design. In addition, the current wiring requires three cabinets to be set up, and the wires need to run from one cabinet to another for wiring, which is quite complicated. Therefore, a low-voltage switchgear that can reduce the number of cabinets and has a more compact layout is what we need. Utility Model Content

[0003] The present invention aims to solve the above-mentioned technical problems by providing a compact alternative low-voltage switchgear. The low-voltage switchgear has a compact layout and only has a front enclosure and a rear enclosure.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model for a compact alternative low-voltage switchgear is as follows:

[0005] The enclosure includes a front housing and a rear housing connected to the rear of the front housing; the rear housing communicates with the front housing; the front housing contains an incoming line compartment, a metering compartment, a secondary wiring compartment, and a circuit breaker installation compartment; the incoming line compartment and the metering compartment are arranged vertically and communicate with each other, the secondary wiring compartment is located on the side of the incoming line compartment and the metering compartment, and a first partition is provided between the secondary wiring compartment and the incoming line compartment and the metering compartment; the circuit breaker installation compartment is located below the metering compartment and the secondary wiring compartment, and a second partition is provided between the circuit breaker installation compartment and the metering compartment and the secondary wiring compartment; ventilation holes are provided on both the second partition and the first partition; the rear housing contains a capacitor cabinet fuse switch compartment and a capacitor installation compartment, respectively, located vertically; the capacitor cabinet fuse switch compartment and the capacitor installation compartment communicate with each other.

[0006] The circuit breaker installation chamber is connected to two mounting beams that are spaced apart vertically; a high-current circuit breaker and a low-current circuit breaker are installed on the two mounting beams.

[0007] The high-current circuit breakers and low-current circuit breakers are arranged separately. The low-current circuit breakers are all installed on the left side of the two mounting beams, and the high-current circuit breakers are all installed on the right side of the mounting beams.

[0008] The front box, rear box, first partition and second partition are all made of aluminum-zinc coated steel sheet.

[0009] The circuit breaker installation chamber is connected to the capacitor installation chamber.

[0010] The technical effects that this utility model can achieve are:

[0011] 1. This utility model replaces the original three-cabinet structure by designing only the front and rear enclosures, and rationally arranges the incoming line room, metering room, secondary wiring room, circuit breaker installation room, capacitor cabinet knife fuse switch room and capacitor installation room, making the overall layout more compact; and the front and rear enclosures are connected, which facilitates wiring.

[0012] 2. In terms of heat dissipation, ventilation holes are provided on both the second and first partitions to ensure that the various chambers are interconnected, preventing heat from accumulating in any one chamber and ensuring that the temperature in each chamber does not become too high. Furthermore, the device for fixing the high-current circuit breaker and the low-current circuit breaker is designed as two mounting beams spaced vertically apart. This spacing design facilitates heat dissipation for both the high-current and low-current circuit breakers. Separating the high-current and low-current circuit breakers also makes it easier to install copper busbars and reduces the heat dissipation impact between them. Attached Figure Description

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0014] Figure 1 This is a structural schematic diagram of a compact alternative low-voltage switchgear according to this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a compact alternative low-voltage switchgear according to this utility model. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] See Figures 1 to 2 .

[0018] A compact alternative low-voltage switchgear includes a front enclosure 1 and a rear enclosure 2 connected to the rear of the front enclosure 1. The rear enclosure 2 is connected to the front enclosure 1, facilitating wiring between them. The front enclosure 1 contains an incoming line compartment 3, a metering compartment 4, a secondary wiring compartment 5, and a circuit breaker installation compartment 6. The incoming line compartment 3 and the metering compartment 4 are vertically aligned and connected. The secondary wiring compartment 5 is located to the side of the incoming line compartment 3 and the metering compartment 4, and a first partition 7 is provided between the secondary wiring compartment 5 and the incoming line compartment 3 and the metering compartment 4. The installation chamber 6 is located below the metering chamber 4 and the secondary wiring chamber 5, and a second partition 8 is provided between the circuit breaker installation chamber 6 and the metering chamber 4 and the secondary wiring chamber 5; both the second partition 8 and the first partition 7 are provided with ventilation holes 9; this utility model divides the front box 1 into multiple chambers by using the second partition 8 and the first partition 7, and uses the ventilation holes 9 to make each chamber interconnected, so that heat is not easily accumulated in a certain chamber, and the temperature in each chamber is not too high, thereby ensuring the normal operation of the components in each chamber.

[0019] The rear enclosure 2 has a capacitor cabinet knife-fuse switch chamber 11 and a capacitor installation chamber 12 located on its upper and lower sides, respectively. The capacitor cabinet knife-fuse switch chamber 11 and the capacitor installation chamber 12 are connected. Specifically, the circuit breaker installation chamber 6 is connected to the capacitor installation chamber 12. In the design of the rear enclosure 2, the rear enclosure 2 is interconnected with the front enclosure by utilizing the connection between the circuit breaker installation chamber 6 and the capacitor installation chamber 12. Therefore, the incoming line chamber 3, metering chamber 4, secondary wiring chamber 5, circuit breaker installation chamber 6, capacitor cabinet knife-fuse switch chamber 11, and capacitor installation chamber 12 are interconnected, which is beneficial for heat dissipation.

[0020] The circuit breaker installation chamber 6 is connected by two vertically spaced mounting beams 21. High-current circuit breakers 23 and low-current circuit breakers 24 are mounted on the two mounting beams 21. Specifically, the high-current circuit breakers 23 and low-current circuit breakers 24 are arranged separately. All low-current circuit breakers 24 are installed on the left side of the two mounting beams 21, and all high-current circuit breakers 23 are installed on the right side of the mounting beams 21 (see reference). Figure 1 This utility model uses double L-shaped mounting beams 21 for the installation of the circuit breaker. By setting the two mounting beams 21 at intervals, it is beneficial to the heat dissipation of the high current circuit breaker 23 and the low current circuit breaker 24. The high current circuit breaker 23 and the low current circuit breaker 24 are arranged separately, which facilitates the installation of copper busbars and reduces the heat dissipation impact between the high current circuit breaker 23 and the low current circuit breaker 24.

[0021] Finally, the front enclosure 1, rear enclosure 2, first partition 7, and second partition 8 of this utility model are all made of aluminum-zinc coated steel sheets, eliminating the traditional partitions and using high-strength aluminum-zinc coated steel sheets for separation and support; this utility model provides a compact alternative low-voltage switchgear with high space utilization, reasonable layout, and while ensuring electrical clearance ≥30mm, heat dissipation performance, and ease of maintenance, so as to increase the power distribution circuit capacity per unit area.

Claims

1. A compact alternative low voltage switchgear, characterized in that: The enclosure includes a front housing (1) and a rear housing (2) connected to the rear side of the front housing (1); the rear housing (2) communicates with the front housing (1); the front housing (1) contains an incoming line compartment (3), a metering compartment (4), a secondary wiring compartment (5), and a circuit breaker installation compartment (6); the incoming line compartment (3) and the metering compartment (4) are arranged vertically and communicate with each other, the secondary wiring compartment (5) is located on the side of the incoming line compartment (3) and the metering compartment (4), and a first wiring device is provided between the secondary wiring compartment (5) and the incoming line compartment (3) and the metering compartment (4). Partition (7); The circuit breaker installation chamber (6) is located below the metering chamber (4) and the secondary wiring chamber (5), and a second partition (8) is provided between the circuit breaker installation chamber (6) and the metering chamber (4) and the secondary wiring chamber (5); Ventilation holes (9) are provided on the second partition (8) and the first partition (7); The rear box (2) is provided with a capacitor cabinet knife fuse switch chamber (11) and a capacitor installation chamber (12) on the upper and lower sides respectively; The capacitor cabinet knife fuse switch chamber (11) and the capacitor installation chamber (12) are connected.

2. A compact alternative low voltage switchgear according to claim 1, characterized in that: The circuit breaker installation chamber (6) is connected to two installation beams (21) that are spaced apart vertically; a high-current circuit breaker (23) and a low-current circuit breaker (24) are installed on the two installation beams (21).

3. A compact alternative low-voltage switchgear according to claim 2, characterized in that: The high-current circuit breaker (23) and the low-current circuit breaker (24) are arranged separately. The low-current circuit breaker (24) is installed on the left side of the two mounting beams (21), and the high-current circuit breaker (23) is installed on the right side of the mounting beams (21).

4. A compact alternative low-voltage switchgear according to claim 1, characterized in that: The front box (1), rear box (2), first partition (7) and second partition (8) are all made of aluminum-zinc coated steel sheet.

5. A compact alternative low-voltage switchgear according to claim 1, characterized in that: The circuit breaker installation chamber (6) is connected to the capacitor installation chamber (12).

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