CZ34140U1 - Kit for assembling main circuit breaker frames of different sizes - Google Patents

Description

Kit for assembling main circuit breaker frames with different sizes

Field of technology

The present invention relates to an assembly for assembling the main frames of circuit breakers of various sizes, in particular circuit breakers of the pull-out type, in the medium voltage range.

Prior art

The circuit breakers are equipped with a main frame supporting electrical devices adapted to perform the functions performed by the circuit breaker itself. The main frame of circuit breakers can have different dimensions and / or shapes based on the characteristics of the circuit breaker itself.

Figure 1 shows three examples of a main frame for three different circuits according to the prior art. Three frames 101 '. 101 and 101 'have different dimensions and shapes. Each of these frames has a first side wall 102 '. 102. 102 '. the second side wall 103 '. 103, 103 'and a plurality of fasteners 104', 104, 104 ', which are generally welded to each other. First, the three frames 101 ', 101, 101' differ from each other in the dimensions of the connecting elements 104 ', 104, 104', but also the respective first 102 '. 102. 102 'and the other 103'. 103. 103 'side walls differ from each other in shape and dimensions.

Therefore, different side and connecting walls are required for each size of circuit breaker, which means high production, transport and storage costs.

The essence of the technical solution

It is an object of the present invention to provide a kit for assembling circuit breaker main frames with different dimensions and / or shapes, to allow simplification of manufacturing, transport and storage processes and consequent reduction of associated costs.

This and other objects are achieved by a kit for assembling main circuit breaker frames with different dimensions according to claim 1.

Explanation of drawings

In order to better understand the present invention and appreciate its advantages, some examples of non-limiting embodiments of the invention will be described with reference to the accompanying drawings, in which:

Figure 1 is a perspective view of three main circuit breaker frames of different sizes according to the prior art;

Figures 2a and 2b are side views of a circuit breaker connected to a control panel under two different operating conditions;

Figure 3 is a perspective view of a circuit breaker having a frame obtained by a kit according to the present invention;

Figure 4 is a perspective view of three main circuit breaker frames of different sizes assembled from a kit according to the present invention;

Figure 5 is an exploded perspective view of the main frames of Figure 4.

- 1 CZ 34140 U1

Examples of technical solution

Referring to Figures 2 to 3, reference numeral 3 denotes a circuit breaker and reference numeral 5 denotes a control panel. For example, the circuit breaker 3 may be of the removable type and may be located in the control panel 5. The circuit breaker 3 may for example comprise a slide 4 comprising, for example, wheels 7 movable along the coupling / uncoupling direction CD from the extended position relative to the control panel 5 (Figure 1a) , in which the movable contacts 2 of the circuit breaker 3 are disconnected from the respective stationary contacts 6 of the control panel 5 to the insertion position in the control panel 5 (Figure 1b), the movable contacts 2 being connected to the respective stationary contacts 6.

The pull-out position corresponds to the mechanical and electrical disconnection position, while the insertion position corresponds to the mechanical and electrical connection position.

In the embodiment shown in Figures 2 to 3, the circuit breaker 3 and the control panel 5 are of the multiphase type, in particular of the three-phase type. Therefore, each of them contains three corresponding pairs of terminals. However, according to alternative embodiments, the circuit breaker 3 and the control panel 5 may be single-phase, in which case each of them comprises a corresponding single pair of terminals.

The contact elements 1 can be connected to each of the movable contacts 2 and are arranged to engage the stationary contacts 6 of the control panel 5. According to the illustrated embodiment, the contact elements 1 are of the tulip type. Alternatively, they may be of a different type, for example they may be of the pliers type.

The circuit breaker 3 comprises a main frame 8, which carries the pre-inserted elements, as well as all the tools and devices necessary for its operation. The frame 8 can have different dimensions and / or shapes according to the size of the circuit breaker 3. The kit according to the present invention makes it possible to assemble the frames 8 and subsequently the circuit breakers 3 of different sizes.

Figures 4 to 5 show three examples of the main frame of three different circuit breakers obtained from the kit according to the invention. The three frames 8 ', 8, 8' have different dimensions and shapes. Each of these frames has a first side wall 9 ', 9, 9', a second side wall 10 ', 10, 10' and one or more connecting elements 1Γ. 11. 1Γ located between the side walls. Fasteners 11 '. 11. 11 'differ from each other, in particular they differ in their dimensions and / or shape, since they are intended to form a circuit breaker frame of a specific size. In contrast, the first side walls 9 ', 9, 9' are all identical to each other, analogously the second side walls 10 ', 10, 10' are identical to each other and each is shaped to be connectable to each of the connecting elements 1Γ. 11. 1Γ. regardless of their arrangement. Each frame 8 ', 8, 8' differs from another frame of a different size only in its size-specific connecting element, while the first and second side walls are connectable to any frame of any size.

In the kit according to the invention there are first side walls 9 ', 9, 9', second side walls 10 ', 10, 10' and connecting elements 11 '. 11. 11 'are provided separately from each other, and are assembled based on the desired size of the main frame 8. For example, the connecting elements 11'. 11. 11 'may comprise connecting flanges 12, on which are directly adjacent side walls 9', 9, 9 ', 10', 10, 10 ', which may therefore be connected by connecting elements and / or may be welded.

According to a possible embodiment, the first side walls 9 ', 9, 9' and the side walls 10 ', 10, 10' are in a flat shape so that they can be stored and transported under conditions where they will overlap each other.

According to one embodiment, the first side walls 9 ', 9, 9' and the second side walls 10 ', 10, 10' are identical to each other. In other words, there may be sidewalls in the kit of the invention

-2 CZ 34140 U1 applied optionally from one or the other side of the connecting elements 1Γ. 11. 1Γ. This further simplifies the production process as well as transport and assembly.

Preferably, the connecting elements 11 ', 11, 11' of each size are stackable. This feature also reduces storage and transport dimensions, and therefore relative costs.

According to one embodiment, the assembly according to the invention may comprise reinforcing ribs (not shown in the figures) which are applied to the frame to strengthen it during assembly.

Numerous additions, modifications, or substitutions of elements with other functionally equivalent equivalents may be made by one of ordinary skill in the art to describe the particular embodiment of the kit of the present invention without departing from the scope of the appended claims.

Claims (5)

CLAIMS FOR PROTECTION A kit for assembling the main frames (8 ', 8, 8') of circuit breakers (3) of different sizes, characterized in that said kit comprises: - at least two mutually identical first side walls (9 ', 9, 9); - at least two mutually identical second side walls (10 ', 10, 10'); - at least two connecting elements (11 ', 11, 11'), differing in their dimensions and / or shape, each main frame (8 ', 8, 8') being formed by connecting a connecting element (1Γ, 11, 1Γ) to any of said at least two first side walls (9 ', 9, 9) and to any of said at least two second side walls (10', 10, 10 '). Kit according to claim 1, characterized in that said first side walls (9 ', 9, 9') and said second side walls (10 ', 10, 10') are flat in shape. Kit according to claim 1 or 2, characterized in that said first side walls (9 ', 9, 9') and said second side walls (10 ', 10, 10') are identical to each other. Kit according to any one of the preceding claims, characterized in that the connecting elements (1T, 11, 1T) of each size are stackable relative to one another. Kit according to any one of the preceding claims, characterized in that said connecting elements (1T, 11, 1T) comprise connecting flanges (12) for connecting the first (9 ', 9, 9') and second side walls (10 ', 10, 10 ').