Low-voltage grid-connected cabinet
By separating the metering instrument room from the circuit breaker room in the low-voltage grid-connected cabinet and installing lead seals on the front and rear doors, and using copper busbars to connect the current transformers, the safety and maintenance convenience issues of the low-voltage grid-connected cabinet are solved, achieving higher safety and convenient transformer replacement.
Patent Information
- Application Number
- CN202520283335.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing low-voltage grid-connected cabinets have shortcomings in terms of safety and ease of maintenance, especially in the design of the metering room and circuit breaker room, which can easily lead to the risk of electricity theft and make it inconvenient to replace the instrument transformers.
The metering instrument room is separated from the circuit breaker room, and lead seals are installed on the front and rear doors. The current transformers are connected by copper busbars. The metering compartment and the branch switch compartment are located at the bottom of the cabinet. Cable passage holes are provided to facilitate cable wiring. The front and rear door design facilitates maintenance.
It improves the safety of low-voltage grid-connected cabinets, prevents electricity theft, and facilitates the replacement and maintenance of instrument transformers.
Smart Images
Figure CN223744196U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The patent relates to power equipment, in particular to a low-voltage grid-connected cabinet. BACKGROUND
[0002] The low-voltage grid-connected cabinet is a kind of power equipment, and its main function is to realize the power distribution of multiple power sources in the same region and output the power to each power terminal to ensure the normal power supply of the power system. The metering chamber and the circuit breaker chamber are separated in the patent, which is safer, and the front and rear door settings are more conducive to maintenance. The copper bars of the metering chamber and the circuit breaker chamber are overlapped, which is conducive to the replacement of the mutual inductor. The metering chamber is separately separated, and lead seals are added on the front and rear doors, which is safe and reliable and prevents electricity theft.
[0003] PATENT CONTENT
[0004] In view of the above problems, the specific technical scheme of the patent is as follows:
[0005] A low-voltage grid-connected cabinet, characterized in that: the cabinet body comprises a metering instrument chamber (1), a metering lower compartment (3), a circuit breaker chamber (2), a shunt switch chamber (4), and a rear door (6); the metering instrument chamber and the circuit breaker chamber are located at the upper part of the cabinet body and are arranged side by side, and a partition plate separates the two; the metering instrument chamber and the circuit breaker chamber are provided with a current transformer (9) and are overlapped by a copper bar (8); lead seals (10) are arranged on the front and rear doors of the metering instrument chamber; the metering lower compartment and the shunt switch chamber are located at the lower part of the cabinet body and are arranged side by side; a cable through hole (5) is arranged at the bottom of the cabinet body; and the shunt switch chamber is provided with a shunt cable support (7).
[0006] Beneficial effects
[0007] The metering chamber and the circuit breaker chamber are separated in the patent, which is safer, and the front and rear door settings are more conducive to maintenance. The copper bars of the metering chamber and the circuit breaker chamber are overlapped, which is conducive to the replacement of the mutual inductor. The metering chamber is separately separated, and lead seals are added on the front and rear doors, which is safe and reliable. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is an external structure schematic diagram of the low-voltage grid-connected cabinet of the patent;
[0009] Figure 2 It is a bottom schematic diagram of the low-voltage grid-connected cabinet of the patent;
[0010] Figure 3 It is a back schematic diagram of the low-voltage grid-connected cabinet of the patent;
[0011] Figure 4 It is an internal structure schematic diagram of the cabinet body of the patent;
[0012] Figure 5 It is an internal structure schematic diagram of the cabinet body of the patent;
[0013] Figure 6 The figure is a schematic view of the internal structure of the cabinet of the present patent. DETAILED DESCRIPTION
[0014] The technical solutions in the embodiments of the present patent will be clearly and completely described in combination with the drawings in the embodiments of the present patent. Obviously, the described embodiments are only part of the embodiments of the present patent, rather than all the embodiments. Based on the embodiments in the present patent, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present patent.
[0015] The low-voltage grid-connected cabinet is a kind of power equipment, and the main function is to realize the power distribution of multiple power sources in the same region and output the power to each power terminal to ensure the normal power supply of the power system.
[0016] As Figures 1-6 , the low-voltage grid-connected cabinet of the present patent, the cabinet comprises a metering chamber 1, a metering lower compartment 3, a circuit breaker chamber 2, and a shunt switch chamber 4; as Figure 2 , the bottom of the cabinet is provided with a cable through hole 5; as Figure 3 , the cabinet is provided with a rear door 6, and the front and rear doors are set to be more beneficial to maintenance.
[0017] As Figure 4 , the metering chamber and the circuit breaker chamber are separated, and the safety is higher. The metering chamber and the circuit breaker chamber are located at the upper part of the cabinet and are arranged side by side, and a partition plate separates the two. As Figure 4 , Figure 6 , lead seals 10 are arranged on the front and rear doors of the metering chamber, which is safe and reliable and prevents electricity stealing.
[0018] As Figure 5 , the metering chamber and the circuit breaker chamber are provided with current transformers 9, which are connected through copper bars 8; the copper bars are fixed through insulators and supports.
[0019] The metering lower compartment and the shunt switch chamber are located at the lower part of the cabinet and are arranged side by side; the shunt switch chamber is provided with a shunt cable support 7.
[0020] The front and rear doors are set to be more beneficial to maintenance. The copper bars of the metering chamber and the circuit breaker chamber are connected, which is beneficial to the replacement of the current transformer. The metering chamber is separately separated, and lead seals are added on the front and rear doors, which is safe and reliable and prevents electricity stealing.
[0021] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present patent, rather than limit them; although the present patent has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features thereof; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present patent.
Claims
1. A low voltage grid connected switchgear, characterized by: The cabinet body comprises a metering instrument chamber (1), a metering lower compartment (3), a circuit breaker chamber (2), a shunt switch chamber (4) and a rear door (6). The metering instrument chamber (1) and the circuit breaker chamber (2) are located at the upper part of the cabinet body and are arranged side by side, and a partition plate is arranged between the metering instrument chamber (1) and the circuit breaker chamber (2). The metering instrument chamber (1) and the circuit breaker chamber (2) are provided with current transformers (9) and are connected through copper bars (8). Lead seals (10) are arranged on the front and rear doors of the metering instrument chamber (1). The metering lower compartment (3) and the shunt switch chamber (4) are located at the lower part of the cabinet body and are arranged side by side. The bottom of the cabinet body is provided with a cable passing hole (5). The shunt switch chamber (4) is provided with a shunt cable support (7).