Wiring terminal creepage distance enhancing structure of 5G1U circuit breaker

Abstract

The utility model discloses a binding post creepage distance enhancing structure of a 5G1U circuit breaker, which structurally comprises a circuit breaker base, a handle is arranged on the left side of the circuit breaker base, the handle penetrates and extends into a circuit breaker shell to control opening and closing of the circuit breaker, two wiring holes and two fastening holes are arranged on the left side of the circuit breaker base, and the fastening holes are arranged on the right side of the circuit breaker base. The two wiring holes and the two fastening holes are rectangular and are distributed in a pairwise crossed manner, and fasteners for fixing wires are connected in the fastening holes; the two wiring holes and the two fastening holes are rectangular and are distributed in a pairwise crossed mode, the interphase distance of the two wiring holes can be effectively increased, the creepage distance can be increased, the use safety of the product is improved, the four holes are distributed in a rectangular mode, the wiring holes can be designed to be larger, then wires with larger average numbers can be connected, and the use flexibility of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, and more specifically, to a creepage distance enhancement structure of a connection terminal of a 5G1U circuit breaker. Background Art

[0002] Circuit breakers are important switching devices in power organizations, which can close, carry and disconnect currents in circuits. With the rapid development of the 5G industry, the demand for 5G cabinets is increasing, and the plug-in circuit breakers used with them are also gaining more and more attention.

[0003] Electrical clearance and creepage distance are two important safety indicators of circuit breakers; creepage distance refers to the shortest distance between two conductive parts measured along the insulating surface; in conventional power grids, no design and complex structure are required to meet the creepage distance, but in high-voltage photovoltaic and wind power systems, due to the increase in system voltage, the rated insulation voltage is also increased from 2000V to 2500V, and the creepage distance needs to be increased from 16mm to 25mm; the existing plug-in circuit breakers have a small phase-to-phase distance between terminals, which makes it difficult to meet this creepage distance requirement. The current solution is to increase the distance between the terminals by increasing the phase spacing of the product, which will increase the size of the circuit breaker, which is contrary to the compact design concept of the circuit breaker. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a 5G1U circuit breaker terminal creepage distance enhancement structure to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a creepage distance enhancement structure of a terminal block of a 5G1U circuit breaker, comprising a circuit breaker base, a handle is arranged on the left side of the circuit breaker base, the handle extends through the circuit breaker housing to control the opening and closing of the circuit breaker, two wiring holes and two fastening holes are arranged on the left side of the circuit breaker base, the two wiring holes and the two fastening holes are rectangular and cross-distributed in pairs, and fasteners for fixing the wires are connected in the fastening holes.

[0006] The utility model is further configured as follows: a partition rib is arranged between the two wiring holes.

[0007] The utility model is further configured as follows: the partition rib comprises a cylindrical portion located at positions corresponding to the two fastening holes and an arc-shaped portion located between the two cylindrical portions.

[0008] The utility model is further configured as follows: the thickness of the cylindrical portion is not less than 0.5 mm.

[0009] The utility model is further configured to: when the height of the partition rib is not less than 1.5 mm, the arc is cut off.

[0010] The utility model is further configured that: the edges of the partition ribs on the side away from the circuit breaker base are all formed with rounded corners.

[0011] The utility model is further configured as follows: the partition ribs are an integrally formed structure.

[0012] In summary, the utility model has the following beneficial effects: the two wiring holes and the two fastening holes are rectangular and cross-distributed in pairs, which can effectively increase the phase distance between the two wiring holes, increase the creepage distance and thus improve the safety of product use; the four holes are distributed in a rectangular shape, so that the wiring holes can be designed to be larger, and thus a larger number of wires can be connected, thereby improving the flexibility of product use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the distribution of wiring holes, fastening holes and partition bars of the utility model.

[0016] Figure numerals: 1, circuit breaker base; 10, handle; 2, wiring hole; 20, fastening hole; 21, fastener; 3, partition rib; 30, cylindrical portion; 31, arc-shaped portion; 32, chamfered corner. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-2As shown, a creepage distance enhancement structure of a terminal block of a 5G1U circuit breaker according to an embodiment of the utility model includes a circuit breaker base 1, a handle 10 is arranged on the left side of the circuit breaker base 1, the handle 10 extends through the circuit breaker housing to control the opening and closing of the circuit breaker, and two wiring holes 2 and two fastening holes 20 are arranged on the left side of the circuit breaker base 1. The two wiring holes 2 and the two fastening holes 20 are rectangular and cross-distributed in pairs, and a fastener 21 for fixing the wire is connected in the fastening hole 20.

[0019] When in use, the two wiring holes 2 and the two fastening holes 20 are rectangular and cross-distributed in pairs, which can effectively increase the phase-to-phase distance between the two wiring holes 2, increase the creepage distance and thus improve the safety of product use; the four holes are distributed in a rectangular shape, so that the wiring holes 2 can be designed to be larger, and thus a larger number of wires can be connected, thereby improving the flexibility of product use.

[0020] A partition rib 3 is disposed between the two wiring holes 2 .

[0021] When in use, by setting the partition rib 3, the fastening holes 20 are separated from each other, the wiring holes 2 are separated from each other, and the wiring holes 2 are separated from the fastening holes 20, so as to increase the creepage distance and improve the safety of product use.

[0022] The partition rib 3 includes a cylindrical portion 30 located at positions corresponding to the two fastening holes 20 and an arc-shaped portion 31 located between the two cylindrical portions 30 .

[0023] When in use, the cylinder corresponding to the fastening hole 20 cannot effectively improve the IP level (to IP20).

[0024] The thickness of the cylindrical portion 30 is not less than 0.5 mm; the height of the partition rib 3 is not less than 1.5 mm.

[0025] When in use, the insulation effect is better when the thickness of the cylindrical portion 30 is not less than 0.5 mm and the height of the partition rib 3 is not less than 1.5 mm.

[0026] The edges of the partition ribs 3 facing away from the circuit breaker base 1 are all formed with rounded corners 32 .

[0027] During use, the rounded corners 32 are designed to prevent the wires from being scratched.

[0028] The partition rib 3 is an integrally formed structure.

[0029] When in use, the partition rib 3 adopts an integrally formed structure, which effectively improves the structural strength.

[0030] It should also be pointed out that the terms used in the present invention, such as “front”, “rear”, “vertical”, “horizontal”, etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0031] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A 5G1U circuit breaker terminal creepage distance enhancement structure, comprising a circuit breaker base (1), a handle (10) being arranged on the left side of the circuit breaker base (1), the handle (10) extending through the circuit breaker housing to control the opening and closing of the circuit breaker, characterized in that: The left side of the circuit breaker base (1) is provided with two wiring holes (2) and two fastening holes (20); the two wiring holes (2) and the two fastening holes (20) are rectangular and arranged crosswise in pairs; a fastener (21) for fixing a wire is connected inside the fastening hole (20).

2. The creepage distance enhancement structure of the connection terminal of the 5G1U circuit breaker according to claim 1, characterized in that: A partition rib (3) is disposed between the two wiring holes (2).

3. The creepage distance enhancement structure of the connection terminal of the 5G1U circuit breaker according to claim 2, characterized in that: The partition rib (3) comprises a cylindrical portion (30) located at positions corresponding to the two fastening holes (20) and an arc-shaped portion (31) located between the two cylindrical portions (30).

4. The creepage distance enhancement structure of the connection terminal of the 5G1U circuit breaker according to claim 3 is characterized in that: The thickness of the cylindrical portion (30) is not less than 0.5 mm.

5. The creepage distance enhancement structure of the connection terminal of the 5G1U circuit breaker according to claim 2, characterized in that: The height of the partition rib (3) is not less than 1.5 mm.

6. The creepage distance enhancement structure of the connection terminal of the 5G1U circuit breaker according to claim 2, characterized in that: The edges of the partition ribs (3) on the side facing away from the circuit breaker base (1) are all formed with rounded corners (32).

7. The creepage distance enhancement structure of the connection terminal of the 5G1U circuit breaker according to claim 2, characterized in that: The partition rib (3) is an integrally formed structure.

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