Unit main circuit static plug-in, power supply distributor and multi-loop unit assembly

Abstract

The utility model relates to the technical field of switch cabinets, in particular to a unit main circuit static plug-in, which comprises an insulating shell and a plurality of plug-in rows, the plug-in rows are horizontally arranged, and the upper side surface and the lower side surface of the rear part of the insulating shell are provided with a plurality of vertical wire outlet channels; the insulating shell is of a split assembly type structure. The power distributor comprises a distributor frame and the unit main circuit static plug-in. The multi-loop unit assembly comprises a unit chamber and a plurality of units in the unit chamber, and the rear part of the unit chamber is provided with the power supply distributor. The unit main circuit static plug-in has the beneficial effects that the miniaturization of the unit main circuit static plug-in is realized through the design of the horizontally arranged plug-in row and the design of a split assembly type structure, and a 1 / 3 unit assembly with 63A / 3 phases and a unit modulus of 150mm can be realized by combining the design of integrating an incoming line and an outgoing line; the unit main circuit static plug-in with a split assembly type structure realizes modularization, and unit main circuit static plug-ins with different phase numbers can be obtained through assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a unit main circuit static plug-in unit, a power distributor and a multi-circuit unit assembly. Background Art

[0002] Currently, in 1 / 2 unit assemblies, 125A / 3-phase (unit main circuit rated current) power distributors use copper busbar routing and can support the configuration of auxiliary circuit connectors with 24 connection points. The unit module is 200mm. 63A / 3-phase power distributors use wire routing and can support the configuration of auxiliary circuit connectors with 32 connection points. The unit module is 200mm or 150mm.

[0003] The power distributor of the 1 / 4 unit adopts wire routing, the rated current of the unit main circuit is 32A, and the unit module is 200mm.

[0004] According to market user equipment requirements, the 1 / 4 unit can only be used in terminal applications and cannot solve the installation space requirements of control circuit components. In contrast, the 1 / 2 unit can effectively solve this problem. However, although the 1 / 2 unit with a unit module of 150mm can achieve 12 layers and 24 circuits in a switch cabinet device, the user requires a single device with 36 circuits for a 5kVA motor control circuit, which exceeds the capabilities of the 1 / 2 and 1 / 4 units. At the same time, the user also requires the unit main circuit rated current to be at least 63A (the actual operating current of the unit in actual application is 40A) and support the setting of auxiliary circuit connectors with 20 wiring points.

[0005] Only 1 / 3 of the unit with a unit module of 150mm can realize 12 layers and 36 circuits in a switch cabinet device.

[0006] In the existing technology, the 1 / 3 unit has basically no customer applications and very few products. The inner width of the 1 / 3 unit is only 155mm. There are limitations on the structural dimensions of the unit main circuit connectors and the electrical clearance when arranging the unit main circuit connectors. The existing unit main circuit dynamic plug-ins and unit main circuit static plug-ins have large structural dimensions, and it is difficult to route the wires in the power distributor. The unit module can only be 200mm. Utility Model Content

[0007] The technical problem to be solved by the present invention is that the static plug-in unit main circuit on the existing power distributor occupies a large space and cannot be adapted to units with a smaller inner width and a smaller unit module, such as a 1 / 3 unit with a unit module of 150mm.

[0008] The technical solution adopted by the utility model to solve its technical problems is: a unit main circuit static plug-in, including an insulating shell and a plurality of plug-in rows, the plug-in rows are installed in the insulating shell and are arranged horizontally in a line in the insulating shell, the plug-in rows are arranged horizontally, the plug-in end of the plug-in row is its front end, and the rear end of the plug-in row is the connection terminal of the connecting wire, which is located at the rear of the insulating shell, the insulating shell is a split assembly structure, including a plurality of insulating shell monomers, and the plurality of insulating shell monomers are assembled in sequence in the left and right directions to form an insulating shell assembly, each plug-in row is installed between two adjacent insulating shell monomers on the left and right, and the insulating shell assembly is combined together through the self-combination structure of the insulating shell monomers, or the insulating shell assembly is combined together through an external combination structure.

[0009] In some embodiments, optionally, the upper side surface of the rear portion of the insulating shell has a plurality of vertical wire outlet channels corresponding one-to-one to the wiring terminals of each patch panel, so that the wires connected to the patch panel can be vertically outlet from the corresponding wire outlet channels, and the lower side surface of the rear portion of the insulating shell also has a plurality of vertical wire outlet channels corresponding one-to-one to the wiring terminals of each patch panel, so that the wires connected to the patch panel can be vertically outlet from the corresponding wire outlet channels.

[0010] In some embodiments, optionally, the external coupling structure is a clamp, which is sleeved on the outside of the insulating shell assembly to combine the insulating shell assembly together.

[0011] In some embodiments, optionally, the clamp is assembled from two left and right or upper and lower clamp units, and a concave-convex matching structure is provided between the clamp and each insulating shell unit for positioning the front and rear positions of the insulating shell units.

[0012] In some embodiments, optionally, there is a concave-convex matching structure between the clamp and each insulating shell unit, specifically: the upper side and / or lower side of each insulating shell unit has a groove for forming a positioning groove on the outside of the insulating shell assembly, and the inner side of the clamp has a positioning convex strip embedded in the positioning groove.

[0013] In some embodiments, optionally, the two clamp units are assembled together by a buckle knot structure on the clamp units; or the two clamp units are assembled together by a fastener.

[0014] In some embodiments, optionally, the clamp has a mounting hole for installing a static plug-in of the unit main circuit.

[0015] In some embodiments, optionally, the wiring terminal of the patch panel has a wiring hole and a bolt fastening assembly installed through the wiring hole for connecting the wires.

[0016] A power distributor includes a distributor frame and the above-mentioned unit main circuit static plug-in, the unit main circuit static plug-in is installed on the distributor frame, and the plug-in row of the unit main circuit static plug-in is connected with a wire for input or output of the unit main circuit.

[0017] In some embodiments, optionally, one plug strip connects two wires, wherein one wire is vertically extended upward from a wire outlet channel on the upper side of the insulating housing, and the other wire is vertically extended downward from a wire outlet channel on the lower side of the insulating housing.

[0018] In some embodiments, optionally, the end of the wire of the plug-in bar of the static plug-in of the main circuit of the unit is provided with a terminal for connecting to the plug-in bar of the static plug-in of the main circuit of the unit. One plug-in bar is connected to two wires, one of which is connected to the upper side of the wiring terminal of the plug-in bar through an upwardly bent wiring terminal, and is vertically extended upward from the outlet channel on the upper side of the insulating shell, and the other wire is connected to the lower side of the wiring terminal of the plug-in bar through a downwardly bent wiring terminal, and is vertically extended downward from the outlet channel on the lower side of the insulating shell.

[0019] In some embodiments, optionally, there are multiple unit main circuit static plug-ins, each unit main circuit static plug-in corresponds to a unit, and is used to plug in with the unit main circuit dynamic plug-in on the unit to carry out the unit main circuit input and output, and each plug-in row of the unit main circuit static plug-in corresponds to each phase of the unit main circuit input and output.

[0020] In some embodiments, optionally, the plug-in strips for the incoming lines of the unit main circuit and the plug-in strips for the outgoing lines of the unit main circuit are arranged in left and right columns within the insulating housing.

[0021] In some embodiments, optionally, the wiring terminal of the patch panel has a wiring hole and a bolt fastening assembly installed through the wiring hole for connecting the wires.

[0022] In some embodiments, optionally, the power distributor further includes an auxiliary circuit static plug-in and a main circuit incoming line connector, the auxiliary circuit static plug-in and the main circuit incoming line connector are mounted on the distributor frame, the distributor frame has a frame front panel and a frame rear panel, the main circuit incoming line connector is mounted on the frame rear panel for main circuit incoming line, the unit main circuit static plug-in and the auxiliary circuit static plug-in are mounted on the frame front panel, and the auxiliary circuit static plug-in is arranged above the unit main circuit static plug-in.

[0023] A multi-circuit unit assembly includes a unit chamber and multiple units in the unit chamber. The rear of the unit chamber is provided with the above-mentioned power distributor. The rear of the unit is provided with a unit main circuit dynamic plug-in for plugging into the corresponding unit main circuit static plug-in on the power distributor. The unit main circuit dynamic plug-in includes an insulating shell and multiple plug assemblies. The plug assemblies are installed in the insulating shell and arranged horizontally in a line in the insulating shell. The plug assembly includes a conductive plug and a terminal block. The front end of the terminal block is plug-connected with the rear socket of the conductive plug. The conductive plug is arranged vertically, and correspondingly, the terminal block is arranged horizontally.

[0024] In some embodiments, optionally, the insulating shell of the unit main circuit dynamic plug-in is a split assembly structure, including multiple insulating shell monomers, and the multiple insulating shell monomers are assembled in sequence in the left and right directions to form an insulating shell assembly, and each plug assembly is installed between two adjacent insulating shell monomers on the left and right. The insulating shell assembly is combined together through the insulating shell monomer's own combination structure, or the insulating shell assembly is combined together through an external combination structure.

[0025] In some embodiments, optionally, the external coupling structure of the unit main circuit dynamic plug-in is a clamp, which is sleeved on the outside of the insulating shell assembly to combine the insulating shell assembly together.

[0026] In some embodiments, optionally, the clamp of the unit main circuit dynamic plug-in is assembled by two left and right or upper and lower clamp monomers, and a concave-convex matching structure is provided between the clamp and each insulating shell monomer for positioning the front and rear positions of the insulating shell monomer.

[0027] In some embodiments, optionally, a concave-convex matching structure is provided between the clamp of the unit main circuit dynamic plug-in and each insulating shell monomer, specifically: each insulating shell monomer has a groove on the upper side and / or lower side for forming a positioning groove on the outside of the insulating shell assembly, and the inner side of the clamp has a positioning convex strip embedded in the positioning groove.

[0028] In some embodiments, optionally, the two clamping units of the unit main circuit dynamic plug-in are assembled together through a snap knot structure on the clamping unit; or the two clamping units are assembled together through fasteners.

[0029] In some embodiments, optionally, the clamp of the unit main circuit dynamic plug-in has a mounting hole for installing the unit main circuit dynamic plug-in.

[0030] In some embodiments, optionally, the number of unit main circuit static plug-ins is the same as the number of units, each unit main circuit static plug-in corresponds to one unit, and is used to connect with the unit main circuit dynamic plug-in on the unit to carry out unit main circuit input and output, and each plug row of the unit main circuit static plug-in corresponds to each phase of the unit main circuit input and output. Accordingly, the number of unit main circuit dynamic plug-ins for each unit is one, and each plug assembly of the unit main circuit dynamic plug-in corresponds to each phase of the unit main circuit input and output.

[0031] In some embodiments, optionally, the unit is a 1 / 2 unit, and there are 2 1 / 2 units in the unit chamber, or the unit is a 1 / 3 unit, and there are 3 1 / 3 units in the unit chamber.

[0032] The beneficial effects of the utility model are as follows: the unit main circuit static plug-in realizes miniaturization of the unit main circuit static plug-in through the design of the horizontally arranged plug-in row and the design of the split assembly structure, thereby reducing the occupation of the power distributor, ensuring the electrical clearance and wire routing, and enabling the power distributor to adapt to units with smaller inner width and smaller unit modules. Combined with the design of the integrated input and output of the unit main circuit static plug-in, a 1 / 3 unit assembly with 63A / 3 phase and unit module of 150mm can be realized;

[0033] The split assembly structure of the unit main circuit static plug-in and the unit main circuit dynamic plug-in realizes the modularization of the unit main circuit static plug-in and the unit main circuit dynamic plug-in, and the unit main circuit static plug-in with different phase numbers can be assembled, thereby reducing the cost;

[0034] The 1 / 3 unit of the 150mm module realizes 12 layers and 36 circuits in a switchgear device, which increases the small current control circuits of the switchgear device and reduces the number of switchgear devices. It can be applied to 5.5kVA motor control circuits in application fields such as petrochemical, steel, tap water, sewage, marine, nuclear power, etc., greatly reducing the application of 1 / 2 units. The unit current can reach 63A, the unit operation safety is extremely high, the reliability is greatly improved, and the economic value is very considerable.

[0035] At the same time, a 1 / 2 unit assembly with a cabinet width of 500, a unit module of 150mm, and 63A / 3 can be realized, which supports the arrangement of auxiliary circuit connectors for 24 wiring points. If the unit module becomes 200mm, it can support the arrangement of auxiliary circuit connectors for 48 wiring points; a 1 / 2 unit assembly with a cabinet width of 600, a unit module of 150mm can be realized, which supports the arrangement of auxiliary circuit connectors for 32 wiring points. If the unit module becomes 200mm, it can support the arrangement of auxiliary circuit connectors for 64 wiring points, and reduce the use of horizontal busbars and the space occupied by switch cabinet equipment; a 1 / 2 unit assembly with a cabinet width of 600mm, a unit module of 150mm, and 100A / 3 can also be realized, which replaces the 1 / 2 unit of the 125A / 3-phase copper busbar wiring in the prior art. The unit module of this 1 / 2 unit needs to be 200mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention is further described below with reference to the accompanying drawings and embodiments;

[0037] Figure 1 This is a schematic structural diagram of the plug-in strip within the static plug-in unit of the main circuit of Example 1;

[0038] Figure 2 This is a schematic diagram of the installation structure of the plug-in bar of the unit main circuit static plug-in and the insulating housing monomer on one side of Example 1;

[0039] Figure 3 yes Figure 2 Back view of the image;

[0040] Figure 4 This is a schematic diagram of the assembly structure of the six-phase integrated unit main circuit static plug-in unit of Example 1;

[0041] Figure 5 This is a schematic diagram of the final assembly structure of the six-phase integrated unit main circuit static plug-in unit of Example 1;

[0042] Figure 6 This is a schematic diagram of the structure of the conductor in the main circuit incoming line connector of Example 1;

[0043] Figure 7 This is a schematic diagram of the structure in which the conductor in the main circuit incoming line connector of Example 1 is installed in its insulating front housing;

[0044] Figure 8 is Figure 7 Structural diagram of covering the insulating cover on the foundation;

[0045] Figure 9 This is a schematic diagram of the installation structure of the plug assembly of the unit main circuit dynamic plug-in unit and the insulating shell unit on one side of Example 1;

[0046] Figure 10 This is a schematic diagram of the assembly structure of the six-phase integrated unit main circuit dynamic plug-in unit of Example 1;

[0047] Figure 11 This is a schematic diagram of the final assembly structure of the six-phase integrated unit main circuit dynamic plug-in unit of Example 1;

[0048] Figure 12 This is a schematic diagram of the installation structure of the outgoing terminal conductive bar and the insulating housing unit on one side in the main circuit outgoing user wiring member of Example 1;

[0049] Figure 13 This is a schematic diagram of the assembly structure of the nine-phase integrated main circuit outgoing user terminal block of Example 1;

[0050] Figure 14 This is a schematic diagram of the final assembly structure of the nine-phase integrated main circuit outgoing user terminal block of Example 1;

[0051] Figure 15 is Figure 14 Schematic diagram of the general assembly structure with a transparent shield added to the base;

[0052] Figure 16 1 is a schematic diagram of the assembly structure on the rear panel of the frame of the power distributor of Example 1;

[0053] Figure 17 1 is a schematic diagram of the assembly structure on the frame front panel of the power distributor of Example 1;

[0054] Figure 18 is a schematic diagram of the assembly structure of the power distributor of Example 1;

[0055] Figure 19 yes Figure 18 Rear view perspective;

[0056] Figure 20 It is a structural schematic diagram of the 1 / 3 unit of Example 1;

[0057] Figure 21 This is a schematic structural diagram of a unit cell of 1 / 3 unit in Example 1;

[0058] Figure 22 It is a structural schematic diagram of a 1 / 3 unit assembly of Example 1;

[0059] Figure 23 is a structural diagram of the cabinet of Example 1;

[0060] Figure 24 This is a schematic structural diagram of the hand-cranked 1 / 3 unit assembly of Example 2;

[0061] Figure 251 is a schematic structural diagram of a side-outlet power distributor according to Example 3;

[0062] Figure 26 It is a structural schematic diagram of the power distributor of the 1 / 2 unit assembly of Example 4;

[0063] Figure 27 yes Figure 26 Rear view perspective;

[0064] Figure 28 is a schematic structural diagram of a 1 / 2 unit assembly of Example 4;

[0065] Figure 29 1 is a schematic structural diagram of a side-outlet power distributor according to Example 5;

[0066] Figure 30 Schematic diagram of the structure of the unit room of the 1 / 2 unit assembly with a cabinet width of 500 mm and a unit module of 150 mm in Example 6;

[0067] Figure 31 This is a schematic structural diagram of a 1 / 2 unit assembly of Example 6 with a cabinet width of 500 mm and a unit module of 150 mm;

[0068] Figure 32 Schematic diagram of the structure of a unit room of a 1 / 2 unit assembly with a cabinet width of 500 mm and a unit module of 200 mm in Example 7;

[0069] Figure 33 This is a schematic structural diagram of a 1 / 2 unit assembly of Example 7 with a cabinet width of 500 mm and a unit module of 200 mm;

[0070] Figure 34 This is a schematic diagram of the structure of a power distributor with separate incoming and outgoing lines in Example 8;

[0071] Figure 35 yes Figure 34 Rear view perspective;

[0072] Figure 36 This is a schematic structural diagram of a 1 / 2 unit of Example 8;

[0073] Figure 37 is a schematic structural diagram of a 1 / 2 unit assembly of Example 8;

[0074] Figure 38 Schematic diagram of the structure of a unit cell of a 100A / 3-phase 1 / 2 unit of Example 9;

[0075] Figure 39 1 is a schematic structural diagram of a 1 / 2 unit assembly of a 100A / 3-phase system according to Example 9;

[0076] In the figure, 1. unit main circuit static plug-in, 2. unit main circuit dynamic plug-in, 3. power distributor, 4. plug-in strip, 5. wire, 6. insulating shell, 6-1. insulating shell unit, 6-2. clamp, 6-3. groove, 6-4. mounting hole, 7. outlet channel, 8. auxiliary circuit static plug-in, 9. main circuit incoming line connector, 10. main circuit outgoing line user terminal, 11. frame front plate, 12. frame back plate, 13. terminal, 14. conductive plug, 15. terminal block, 16. vertical bus, 17. outlet terminal conductive bar, 18. auxiliary circuit user terminal, 19. rear outlet additional frame, 20. unit room, 21. unit, 22. terminal block, 23. hand-cranked propulsion mechanism, 24. side outlet frame, 25. RJ45 communication dynamic plug-in, 26. RJ45 communication static plug-in, 27. auxiliary circuit dynamic plug-in, 28. transparent cover. DETAILED DESCRIPTION

[0077] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the embodiments described are part of the embodiments of the present application, rather than all of the embodiments. The present application can be embodied through many different forms of embodiments, and the scope of protection of the present application is not limited to the embodiments mentioned in the text. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present application.

[0078] The connectors in this article are a general term for dynamic connectors and static connectors, among which the connectors that are stationary relative to the unit chamber 20 are static connectors, and the connectors that move relative to the unit chamber 20 are dynamic connectors. In the unit assembly, the connectors include unit main circuit connectors, main circuit incoming line connectors 9, auxiliary circuit connectors, etc. The unit main circuit connectors are divided into unit main circuit dynamic connectors 2 and unit main circuit static connectors 1, and the two are plug-connected. The auxiliary circuit connectors are divided into auxiliary circuit dynamic connectors 27 and auxiliary circuit static connectors 8, and the two are plug-connected.

[0079] Example 1, as Figures 1 to 23 As shown, taking a 1 / 3 unit assembly with a cabinet width of 600mm and a unit module of 150mm and a 63A / 3-phase unit main circuit static plug-in 1, a unit main circuit dynamic plug-in 2, and a power distributor 3 adapted to the unit assembly as an example, the technical solution of the present application is described in detail.

[0080] like Figures 1 to 5 As shown, a unit main circuit static plug-in includes an insulating shell 6 and multiple plug-in bars 4. The plug-in bars 4 are installed in the insulating shell 6 and arranged horizontally in a line in the insulating shell 6. The plug-in bars 4 are arranged horizontally, and the plug-in end of the plug-in bar 4 is its front end. The rear end of the plug-in bar 4 is the connection terminal of the connecting wire 5, which is located at the rear of the insulating shell 6.

[0081] The upper side of the rear portion of the insulating housing 6 has a plurality of vertical outlet channels 7 corresponding one-to-one to the wiring terminals of each plug-in bar 4, for allowing the wires 5 connected to the plug-in bar 4 to be vertically outlet upward from the corresponding outlet channels 7. The lower side of the rear portion of the insulating housing 6 also has a plurality of vertical outlet channels 7 corresponding one-to-one to the wiring terminals of each plug-in bar 4, for allowing the wires 5 connected to the plug-in bar 4 to be vertically outlet downward from the corresponding outlet channels 7. Of course, this outlet structure and outlet method are not the only ones, and other outlet structures and outlet methods can also be used.

[0082] The insulating shell 6 is a split assembly structure, including multiple insulating shell monomers 6-1. Multiple insulating shell monomers 6-1 are assembled in sequence in the left and right directions to form an insulating shell assembly. Each plug-in row 4 is installed between two adjacent insulating shell monomers 6-1 on the left and right. The insulating shell assembly is combined together through an external coupling structure.

[0083] The external coupling structure of the insulating housing 6 of the unit main circuit static plug-in 1 is a clamp 6-2, which fits over the exterior of the insulating housing assembly to hold it together. The clamp 6-2 is composed of two upper and lower clamp units, or two left and right clamp units. The clamp 6-2 has a concave-convex fitting structure with each insulating housing unit 6-1, which serves to position the insulating housing units 6-1 forward and backward.

[0084] The clamping hoop 6-2 and each insulating shell unit 6-1 have a concave-convex fitting structure. Specifically, the upper and lower sides of each insulating shell unit 6-1 have grooves 6-3 for forming positioning grooves on the exterior of the insulating shell assembly, and the inner side of the clamping hoop 6-2 has positioning ridges that engage with the positioning grooves. Alternatively, the upper or lower side of each insulating shell unit 6-1 has grooves 6-3 for forming positioning grooves on the exterior of the insulating shell assembly, and the inner side of the clamping hoop 6-2 has positioning ridges that engage with the positioning grooves.

[0085] The two clamping hoop units are assembled together by means of a buckle knot structure on the clamping hoop units; or, the two clamping hoop units are assembled together by means of fasteners such as screws.

[0086] The clamp 6-2 has a mounting hole 6-4 for mounting the static plug-in unit 1 for the main circuit of the unit.

[0087] The wiring terminal of the plug strip 4 has a wiring hole and a bolt fastening assembly installed through the wiring hole for connecting the wire 5.

[0088] Of course, it is not ruled out that the insulating shell assembly is combined together through the self-combination structure of the insulating shell monomer 6-1. For example, the self-combination structure is specifically a snap and snap fitting structure, and the two adjacent insulating shell monomers 6-1 on the left and right are respectively provided with snap and snap fitting structures, so that the two adjacent insulating shell monomers 6-1 on the left and right can be snapped together through the snap and snap fitting structure, so that the insulating shell assembly is combined together through the snap and snap fitting structure; of course, other specific schemes in the existing technology can also be adopted to realize that the insulating shell assembly is combined together through the self-combination structure of the insulating shell monomer 6-1.

[0089] Of course, it is not ruled out that the external connecting structure is a pin fastener or a bolt fastener that passes through each insulating shell monomer 6-1, and the pin fastener or the bolt fastener passes through each insulating shell monomer 6-1 to connect the insulating shell assembly together; of course, other specific solutions in the prior art can also be adopted to realize that the insulating shell assembly is connected together through the external connecting structure.

[0090] like Figures 16-19 As shown, a power distributor includes a distributor frame, a unit main circuit static plug-in 1, an auxiliary circuit static plug-in 8, a main circuit incoming line connector 9 and a main circuit outgoing line user wiring piece 10, the unit main circuit static plug-in 1, the auxiliary circuit static plug-in 8, the main circuit incoming line connector 9 and the main circuit outgoing line user wiring piece 10 are installed on the distributor frame, the distributor frame has a frame front plate 11 and a frame rear plate 12, the main circuit incoming line connector 9 is installed on the frame rear plate 12 for the main circuit incoming line, the unit main circuit static plug-in 1 and the auxiliary circuit static plug-in 8 are installed on the frame front plate On the board 11, the auxiliary circuit static plug-in 8 is arranged above the unit main circuit static plug-in 1. There are three unit main circuit static plug-ins 1. Each unit main circuit static plug-in 1 corresponds to a unit 21 and is used to plug into the unit 21 for input and output of the unit main circuit. Each plug-in row 4 of the unit main circuit static plug-in 1 corresponds to each phase of the unit main circuit input and output. The plug-in row 4 for the unit main circuit input is connected to the main circuit input connector 9 through the wire 5, and the plug-in row 4 for the unit main circuit output is connected to the main circuit output user wiring piece 10 through the wire 5.

[0091] The plug-in strip 4 for the incoming line of the unit main circuit and the plug-in strip 4 for the outgoing line of the unit main circuit are arranged in left and right columns in the insulating housing 6 .

[0092] like Figure 1 and 2As shown, the end of the wire 5 of the plug-in row 4 of the main circuit static plug-in 1 of the unit is provided with a terminal 13 for connecting to the plug-in row 4 of the main circuit static plug-in 1 of the unit. One plug-in row 4 is connected to two wires 5, one of which is connected to the upper side of the wiring end of the plug-in row 4 through the upwardly bent terminal 13, and the other wire 5 is connected to the lower side of the wiring end of the plug-in row 4 through the downwardly bent terminal 13. The outlet channel 7 is a vertical outlet channel 7. The upper and lower sides of the rear part of the insulating shell 6 have multiple outlet channels 7 corresponding to the wiring ends of each plug-in row 4. The outlet channel 7 on the upper side of the insulating shell 6 is used to allow the wire 5 connected to the upper side of the plug-in row 4 to be able to be vertically outlet from the corresponding outlet channel 7, and the outlet channel 7 on the lower side of the insulating shell 6 is used to allow the wire 5 connected to the lower side of the plug-in row 4 to be able to be vertically outlet from the corresponding outlet channel 7.

[0093] The wiring terminals 13 and the wiring ends of the plug-in strip 4 both have wiring holes. The wiring terminals 13 on the upper and lower sides of the plug-in strip 4 are connected to the plug-in strip 4 through the same bolt fastening assembly passing through the wiring holes.

[0094] like Figures 6-8 As shown, the main circuit incoming line connector 9 consists of an insulating housing 6 and a conductive plug 14 and a terminal block 15 installed in the insulating housing 6. The conductive plug 14 is arranged horizontally, and the terminal block 15 is vertically inserted into the rear end of the conductive plug 14 through its lower end. The front end of the conductive plug 14 is used to be plugged into the vertical bus 16. The terminal 13 of the wire 5 is installed on the terminal block 15 to realize the connection between the wire 5 and the main circuit incoming line connector 9.

[0095] There are three main circuit incoming line connectors 9, and each main circuit incoming line connector 9 corresponds to one phase of the main circuit incoming line.

[0096] Three groups of wires 5 are connected to the terminal block 15 of each main circuit incoming connector 9, and each group of wires 5 is connected to a corresponding unit main circuit static plug-in 1, which is used for the unit main circuit incoming line of the corresponding unit. Each group of wires 5 consists of two, and each group of wires 5 is fixed to the left and right sides of the terminal block 15 by a bolt fastening assembly, and each group of wires 5 is arranged from top to bottom on the terminal block 15 according to the arrangement order of the corresponding units 21 from left to right in the unit chamber 20. The three units 21 in the unit chamber 20 are unit 1, unit 2 and unit 3 from left to right. The group of wires 5 corresponding to unit 1 is located at the top, the group of wires 5 corresponding to unit 2 is located in the middle, and the group of wires 5 corresponding to unit 2 is located at the bottom.

[0097] The rear end of the insulating housing 6 of the main circuit incoming line connector 9 has a wiring port, through which a total of six wires 5 are connected to the terminal block 15 in the wiring port. The insulating housing 6 of the main circuit incoming line connector 9 consists of an insulating front shell and an insulating cover.

[0098] The length of the terminal 13 of the wire 5 is 18 mm. In order to better ensure the electrical clearance, a heat shrink tubing is put on the terminal 13, especially the wire 5 connecting the unit main circuit static plug-in 1 and the main circuit incoming line connector 9 of the corresponding unit No. 1. There are many wires 5 and the distance between them is close.

[0099] like Figures 12-15 As shown, the main circuit outgoing user wiring member 10 includes an insulating housing 6 and a plurality of outlet terminal conductive bars 17. The outlet terminal conductive bars 17 are installed in the insulating housing 6 and arranged horizontally in a line in the insulating housing 6. The outlet terminal conductive bars 17 are arranged horizontally. Each outlet terminal conductive bar 17 corresponds to one phase of the unit main circuit outgoing line. The front end of the outlet terminal conductive bar 17 is exposed to facilitate user cable connection. The rear end of the outlet terminal conductive bar 17 is located in the insulating housing 6. The two wires 5 of each phase of the unit main circuit outgoing line of each unit 21 are connected to the upper and lower sides of the rear end of the outlet terminal conductive bar 17. The insulating housing 6 has a plurality of outlet channels 7 corresponding one to one to the rear ends of each outlet terminal conductive bar 17.

[0100] The insulating housing 6 of the main circuit outgoing user connection piece 10 is also a split-assembly structure, which is the same as the split-assembly structure of the insulating housing 6 of the unit main circuit static plug-in 1. The front end of the main circuit outgoing user connection piece 10 is also covered with a transparent protective cover 28.

[0101] The main circuit outgoing user wiring member 10 is a 9-phase assembled structure, which is numbered for easy identification when connecting the wires 5. The 9-phase assembled structure of the main circuit outgoing user wiring member 10 reduces space occupation.

[0102] like Figure 19 As shown, the power distributor 3 is a rear-outlet type power distributor. On the frame front plate 11 of the distributor frame, an auxiliary circuit static plug-in 8 is arranged above the main circuit static plug-in 1 of each unit. From left to right, they are auxiliary circuit static plug-in No. 1, auxiliary circuit static plug-in No. 2 and auxiliary circuit static plug-in No. 3. Auxiliary circuit static plug-in No. 1 corresponds to unit No. 1. Because the space of the frame rear plate 12 of the distributor frame is limited, it can only accommodate the arrangement of auxiliary circuit user wiring components 18 corresponding to auxiliary circuit static plug-ins No. 2 and No. 3. Therefore, a rear-outlet additional frame 19 is also provided between the main circuit outgoing user wiring component 10 and the main circuit incoming line connector 9 on the frame rear plate 12 of the distributor frame. The auxiliary circuit user wiring component 18 corresponding to the auxiliary circuit static plug-in No. 1 is arranged on the rear-outlet additional frame 19.

[0103] like Figures 20-23 As shown, a multi-circuit unit assembly includes a unit chamber 20 and multiple units 21 in the unit chamber 20. The rear of the unit chamber 20 is provided with a power distributor 3. The unit 21 is a 1 / 3 unit. There are 3 1 / 3 units in the unit chamber 20. Each 1 / 3 unit provides 1 circuit, for a total of 3 circuits. The rear of the unit 21 is provided with a unit main circuit dynamic plug-in 2 for plugging into the corresponding unit main circuit static plug-in 1 on the power distributor 3.

[0104] like Figures 9-11 As shown, the unit main circuit dynamic plug-in 2 includes an insulating shell 6 and a plurality of plug assemblies. The plug assemblies are installed in the insulating shell 6 and arranged horizontally in a line in the insulating shell 6. The plug assembly includes a conductive plug 14 and a terminal block 22. The front end of the terminal block 22 is plugged into the rear socket of the conductive plug 14. The conductive plug 14 is arranged vertically, and correspondingly, the terminal block 22 is arranged horizontally.

[0105] The number of the unit main circuit dynamic plug-in 2 of each unit 21 is one, and each plug assembly of the unit main circuit dynamic plug-in 2 corresponds to each phase of the unit main circuit input and output lines.

[0106] The insulating shell 6 of the unit main circuit dynamic plug-in 2 is also a split assembly structure, which is the same as the split assembly structure of the insulating shell 6 of the unit main circuit static plug-in 1, including multiple insulating shell monomers 6-1 and clamps 6-2. Multiple insulating shell monomers 6-1 are assembled in sequence in the left and right directions to form an insulating shell assembly. Each plug assembly is installed between two adjacent insulating shell monomers 6-1 on the left and right, and the clamp 6-2 is put on the outside of the insulating shell assembly to combine the insulating shell assembly together.

[0107] The upper and lower sides of each insulating shell monomer 6-1 of the unit main circuit dynamic plug-in 2 have grooves 6-3, which are used to form positioning grooves on the outside of the insulating shell assembly. The inner side of the clamp 6-2 has a positioning ridge embedded in the positioning groove. The clamp 6-2 is assembled from two upper and lower clamp monomers.

[0108] The two clamping units of the unit main circuit dynamic plug-in 2 are assembled together through the buckle knot structure on the clamping unit.

[0109] The clamp 6-2 and each insulating shell monomer 6-1 have a concave-convex matching structure, specifically: the upper and lower sides of each insulating shell monomer 6-1 have grooves 6-3 for forming positioning grooves on the outside of the insulating shell assembly, and the inner side of the clamp 6-2 has a positioning convex strip embedded in the positioning groove.

[0110] The clamp 6-2 has a mounting hole 6-4 for mounting the unit main circuit dynamic plug-in 2.

[0111] The conductive plugs 14 of each phase of the unit main circuit input and output of the unit main circuit dynamic plug-in 2 are completely aligned with the centers of the plug-in bars 4 of each phase of the unit main circuit input and output of the unit main circuit static plug-in 1, and the two are plug-in connected.

[0112] The unit assembly can apply the applicant's patent application numbers 202021590057.9, 202122641977.X's hand-cranked propulsion mechanism 23, the applicant's patent application number 202123169949.9's hand-pull propulsion mechanism, and the applicant's patent application number 202322485997.1's sliding column hook guide unit structure, so that the unit assembly can achieve three-position display, position locking, propulsion mechanism position locking, circuit breaker closing, drawer locking, and propulsion mechanism locking with high security.

[0113] The unit assembly of this embodiment 1 is a unit assembly that is manually pulled and propelled.

[0114] The dimensions of the power distributor 3 of this embodiment can be 134mm in height, 550mm in width, and 60-70mm in depth, and the unit chamber 20 of the adapted 150-module 1 / 3 unit assembly can be 450mm deep. The rated current of the incoming main circuit of the 63A / 3-phase 1 / 3 power distributor must be 200A. The main circuit incoming connector 9 of the power distributor 3 is specifically a main circuit incoming connector 9 with a rated current of 200A, which is used to plug and connect with the vertical busbar 16 at the rear of the cabinet to provide main circuit incoming lines. The power distributor 3 has a total of three main circuit incoming connectors 9, which are arranged on the left side of the power distributor 3. Each main circuit incoming connector 9 corresponds to a phase of the main circuit incoming line, and each main circuit incoming connector 9 is connected to three units 21 through three unit main circuit static plug-ins 1.

[0115] In the prior art, each unit 21 is equipped with two unit main circuit connectors, one for the unit main circuit incoming line and one for the unit main circuit outgoing line. The main circuit incoming line connector 9 and the unit main circuit static plug 1 for the unit main circuit incoming line are connected by 2 wires per phase, a total of 18 6mm 2 The main circuit incoming line connector 9 of the power distributor 3 is concentrated at the position of the unit main circuit static plug-in 1 corresponding to unit 1. There are 12 6mm ... 2The depth of the power distributor 3 can only be between 60 and 70 mm, making the routing of the wires 5 extremely difficult. Furthermore, the inner width of the 1 / 3 unit is only 155 mm, and the height of the rear panel of unit 21 is only 115.8 mm. Furthermore, 20 auxiliary circuit connectors with connection points must be arranged on unit 21 and the power distributor 3. The auxiliary circuit static plug-in 8 on the power distributor 3 is connected to the auxiliary circuit user terminal 18 via 20 1.5 m2 wires 5. The three auxiliary circuit static plug-ins 8 connect a total of 60 1.5 m2 wires 5. The auxiliary circuit static plug-in 8 occupies 40 mm of the height of the power distributor 3. This problem can only be solved by having a very small external dimension of the unit main circuit connector.

[0116] In this embodiment, the unit main circuit static plug-in 1, by integrating the unit main circuit input and output wires 6, reduces the width occupied by the power distributor 3 and leaves space for the placement of the auxiliary circuit static plug-in 8. Similarly, the unit main circuit dynamic plug-in 2, by integrating the unit main circuit input and output wires 6, reduces its width and also leaves space for the placement of the auxiliary circuit dynamic plug-in 27.

[0117] The plug-in conductor of the unit main circuit static plug-in 1 adopts the design of plug-in row 4 instead of conductive plug 14, and the unit main circuit static plug-in 1 adopts the design of up and down routing of wire 5 to ensure the electrical clearance between the unit main circuit static plug-in 1 and the main circuit incoming line connector 9, and facilitate the routing of wire 5. Corresponding to unit No. 1, the electrical clearance between the unit main circuit static plug-in 1 and the main circuit incoming line connector 9 can meet the standard safety distance requirement of 12.5 to 16 mm.

[0118] The unit main circuit static plug-in unit 1 is designed with the plug-in row 4 arranged horizontally, thereby reducing the height dimension of the unit main circuit static plug-in unit 1.

[0119] The insulating shell 6 of the unit main circuit static plug-in 1 adopts a split assembly structure, which realizes the modularization of the unit main circuit static plug-in 1 and can be assembled to obtain unit main circuit static plug-ins 1 with different numbers of phases. Moreover, this design can also facilitate wiring while ensuring electrical clearance and reducing the thickness of the unit main circuit static plug-in 1, that is, the plug-in bar 4 and the insulating shell 6 are assembled after the connection between the wire 5 and the plug-in bar 4 is completed.

[0120] The main circuit incoming line connector 9, the unit main circuit static plug-in 1, and the main circuit outgoing line user terminal 10 of this embodiment are all designed with a miniaturized structure, which reduces space occupation and facilitates the routing of the wire 5. The electrical clearance is greater than 12.5 mm. Among them, the electrical clearance of the main circuit incoming line connector 9 is 14 mm, which is greater than the standard requirement of 12.5 mm, ensuring that the power frequency withstand voltage meets the qualified standard of 2500 V.

[0121] like Figure 23As shown, the 1 / 3 unit of the 150mm module realizes 12 layers and 36 circuits in a switchgear device, which increases the small current control circuits of the switchgear device and reduces the number of switchgear devices. It can be applied to 5.5kVA motor control circuits in application fields such as petrochemical, steel, tap water, sewage, shipbuilding, nuclear power, etc., greatly reducing the application of 1 / 2 units. The current of unit 21 can reach 63A. The operation safety of unit 21 is extremely high, the reliability is greatly improved, and the economic value is very considerable.

[0122] Economic cost analysis: In the prior art, a 5kVA motor control circuit uses a 1 / 2 unit assembly, and one switchgear device has only 12 layers and 24 circuits. The 1 / 3 unit of the 150mm module of this embodiment realizes 12 layers and 36 circuits for one switchgear device. Using 10,000 1 / 3 units of this embodiment only requires 278 switchgear devices, while if 1 / 2 units are used, 417 units are required. Using 1 / 3 units can reduce 139 switchgear devices. The cabinet cost of one switchgear device, including the vertical busbar 16 and the horizontal busbar, is 7,000 yuan. In addition, one switchgear device occupies 0.6 square meters. Using 1 / 3 units can greatly reduce the number of switchgear devices and greatly reduce the floor space occupied by the switchgear devices.

[0123] Example 2, a unit main circuit static plug-in, power distributor and multi-circuit unit assembly, is basically the same as Example 1, except that: the multi-circuit unit assembly of Example 2 is a 1 / 3 unit assembly that is manually propelled, while Example 1 is a 1 / 3 unit assembly that is manually propelled. Figure 24 As shown, a hand-cranked propulsion mechanism 23 for manual propulsion is installed on the unit 21 of the 1 / 3 unit assembly of the second embodiment. Correspondingly, a groove-shaped positioning member matching the hand-cranked propulsion mechanism 23 is installed on the unit chamber 20.

[0124] Example 3, a unit main circuit static plug-in, power distributor and multi-circuit unit assembly, is basically the same as Example 1, and is a 63A / 3-phase unit main circuit static plug-in 1 and power distributor 3 adapted to a 1 / 3 unit assembly with a unit module of 150mm. The difference is that: Figure 25 As shown, the power distributor 3 of this embodiment 3 is a side-outlet type power distributor 3. In addition to the distributor frame body of embodiment 1 for installing the unit main circuit static plug-in 1, the auxiliary circuit static plug-in 8 and the main circuit incoming line connector 9, the distributor frame of this embodiment 3 also includes a side-outlet frame 24. The side-outlet frame 24 is located on the right side of the distributor frame body, and the auxiliary circuit user wiring piece 18 and the main circuit outgoing line user wiring piece 10 are installed on the side-outlet frame 24.

[0125] There are three auxiliary circuit user wiring pieces 18 and three main circuit outgoing user wiring pieces 10. Each auxiliary circuit user wiring piece 18 is connected to an auxiliary circuit static plug-in 8, and each main circuit outgoing user wiring piece 10 is connected to a unit main circuit static plug-in 1.

[0126] Example 4, a unit main circuit static plug-in, power distributor and multi-circuit unit assembly, is basically the same as Example 1, except that: Figures 26-28 As shown, the power distributor 3 of this embodiment 4 is a 63A / 3-phase 1 / 2 power distributor adapted to a 1 / 2 unit assembly with a unit module of 150mm.

[0127] The multi-circuit unit assembly of this embodiment 4 is a 1 / 2 unit assembly, and the unit chamber 20 of the 1 / 2 unit assembly has two 1 / 2 units. The 1 / 2 power distributor adapted to the 1 / 2 unit assembly has two unit main circuit static plug-ins 1 with integrated input and output lines that are the same as those in embodiment 1.

[0128] The 1 / 2 power distributor of the fourth embodiment is a power distributor 3 of rear-outlet type according to the outlet form.

[0129] Example 5, a unit main circuit static plug-in, power distributor and multi-circuit unit assembly, is basically the same as Example 4, except that: Figure 29 As shown, the 1 / 2 power distributor of this embodiment 5 is a side-outlet power distributor 3 according to the outlet form.

[0130] Example 6, a unit main circuit static plug-in, power distributor and multi-circuit unit assembly, is basically the same as Example 4, except that: Figure 30 and 31 As shown, the cabinet width of the 1 / 2 unit assembly of this embodiment 6 is 500 mm, while the cabinet width of the 1 / 2 unit assembly of embodiment 4 is 600 mm.

[0131] Example 7, a unit main circuit static plug-in, power distributor and multi-circuit unit assembly, is basically the same as Example 6, both are 1 / 2 unit assemblies with a cabinet width of 500mm, except that: Figure 32 and 33 As shown, the unit module of the 1 / 2 unit assembly of this embodiment 7 is 200mm. The extra height space between the rear panel of the unit 21 and the power distributor 3 can be used for the arrangement of RJ45 communication connectors. The RJ45 communication dynamic connector 25 is installed on the unit 21, and the RJ45 communication static connector 26 is installed on the power distributor 3.

[0132] If the RJ45 communication connector is replaced with an auxiliary circuit connector, it can meet the layout of the auxiliary circuit connectors of 48 connection points. It has a large application volume in specific equipment application scenarios, such as subway application scenarios. It can replace the 1 / 2 unit assembly with a cabinet width of 500mm and a unit module of 200㎜, which reduces the use of horizontal busbars and reduces the space occupied by switch cabinet equipment.

[0133] Example 8, a unit main circuit static plug-in, power distributor and multi-circuit unit assembly, is basically the same as Example 1, except that: Figures 34-37 As shown, the power distributor 3 of this eighth embodiment is equipped with a separate unit main circuit static plug-in 1 for incoming and outgoing lines. There are four unit main circuit static plug-ins 1, with two unit main circuit static plug-ins 1 forming a group, corresponding to one unit 21. The left-side unit main circuit static plug-in 1 is used for incoming unit main circuit lines, and the right-side unit main circuit static plug-in 1 is used for outgoing unit main circuit lines. Both the incoming and outgoing unit main circuit static plug-ins 1 have four phases. The unit main circuit static plug-ins 1 are equipped with an auxiliary circuit static plug-in 8 and an RJ45 communication static plug-in 26.

[0134] Correspondingly, the unit main circuit dynamic plug-in 2 on the unit 21 is also a unit main circuit dynamic plug-in 2 with separate input and output lines. One unit has two unit main circuit dynamic plug-ins 2, one unit main circuit dynamic plug-in 2 is used for the unit main circuit input line, and the other unit main circuit dynamic plug-in 2 is used for the unit main circuit output line.

[0135] The multi-circuit unit assembly of this embodiment 8 is a 1 / 2 unit assembly with a unit module of 200 mm. There are two 1 / 2 units in the unit chamber 20 of the 1 / 2 unit assembly. The auxiliary circuit dynamic plug-in 27 and the RJ45 communication dynamic plug-in 25 are installed on the unit main circuit dynamic plug-in 2 of the rear panel of the unit 21.

[0136] Example 9: A unit main circuit static plug-in, power distributor and multi-circuit unit assembly, such as Figure 38 and 39As shown, it is basically the same as Example 8. The power distributor 3 of this Example 9 is installed with a unit main circuit static plug-in 1 with separate incoming and outgoing lines. There are 4 unit main circuit static plug-ins 1, and every 2 unit main circuit static plug-ins 1 form a group, corresponding to a unit 21, wherein the unit main circuit static plug-in 1 on the left is used for the unit main circuit incoming line, and the unit main circuit static plug-in 1 on the right is used for the unit main circuit outgoing line. The multi-circuit unit assembly of this Example 9 is a 1 / 2 unit assembly, and the unit chamber 20 of the 1 / 2 unit assembly has 2 1 / 2 units. The difference from Example 8 is that: the unit module is 150mm, there is no RJ45 communication static plug-in 26, the number of phases of the unit main circuit static plug-in 1 for the unit main circuit incoming line and outgoing line are both 3 phases, the rated current of the unit 21 main circuit is 100A, the cross-sectional area of the plug row 4 of the unit main circuit static plug-in 1 is 3×20mm, and the diameter of each wire 5 connecting the unit main circuit static plug-in 1 is 6mm. 2 Change to 10mm 2 .

[0137] The 1 / 2 unit of the 150mm module of this embodiment 9 can be applied to the motor control circuit of forward and reverse operation. The operating current is not more than 63A, and is normally below 45A. However, the user requires a short-time withstand test of 1s8kA.

[0138] If the 1 / 2 unit of the prior art 125A / 3-phase copper busbar is used, the unit module of the 1 / 2 unit needs to be 200mm, while the 1 / 2 unit of the 100A / 3-phase conductor 5 in this embodiment can be 150mm.

[0139] Using 10,000 1 / 2 units of the 150 mm module of this embodiment only requires 417 switch cabinet devices, while if 1 / 2 units of the 200 mm module are used, 555.56 units are required. The use of the 1 / 2 units of the 150 mm module of this embodiment can reduce 138.56 switch cabinet devices. The cabinet cost of one switch cabinet device, including the vertical busbar 16 and the horizontal busbar, is 7,000 yuan. In addition, one switch cabinet device occupies 0.6 m2. The use of the 1 / 2 units of the 150 mm module of this embodiment can greatly reduce the number of switch cabinet devices and the floor space occupied by the switch cabinet devices.

[0140] The reliability and safety of the 1 / 2 unit of the 150mm module in this embodiment can be fully guaranteed when used in a motor control loop.

[0141] In the prior art, a 1 / 2 unit of a 125A / 3-phase copper busbar with a 200mm module can only accommodate auxiliary circuit connectors with a maximum of 24 connection points, which cannot meet the 32 connection point requirement of auxiliary circuit components of the motor control circuit. However, a 1 / 2 unit of a 150mm module in this embodiment can accommodate auxiliary circuit connectors with a maximum of 32 connection points.

[0142] In summary, the 150mm module 1 / 2 unit of Example 9 solves the application technical problem of the motor control circuit, reduces the number of switch cabinet devices, reduces the floor space, and reduces the total cost of equipment application.

[0143] The 100A, 150mm module 1 / 2 unit of this embodiment 9 can meet the technical requirements of users in specific scenarios, but there is currently no 150mm module 1 / 2 unit of this current level in the industry.

Claims

1. A static plug-in unit for the main circuit, characterized by: It includes an insulating shell and multiple plug-in strips. The plug-in strips are installed in the insulating shell and arranged horizontally in a line in the insulating shell. The plug-in strips are arranged horizontally, the plug-in end of the plug-in strip is its front end, and the rear end of the plug-in strip is the connection terminal of the connecting wire, which is located at the rear of the insulating shell. The insulating shell is a split assembly structure, including multiple insulating shell monomers. The multiple insulating shell monomers are assembled in sequence in the left and right directions to form an insulating shell assembly. Each plug-in strip is installed between two adjacent insulating shell monomers on the left and right. The insulating shell assembly is combined together through the self-combination structure of the insulating shell monomers, or the insulating shell assembly is combined together through an external combination structure.

2. The unit main circuit static plug-in according to claim 1, characterized in that: The external connection structure is a clamp, which is sleeved on the outside of the insulating shell assembly to connect the insulating shell assembly together.

3. The unit main circuit static plug-in according to claim 2, characterized in that: The clamp is assembled from two clamp monomers, one on the left or the other, or one on the top and the other, and a concave-convex matching structure is provided between the clamp and each insulating shell monomer, for positioning the front and rear positions of the insulating shell monomer.

4. The unit main circuit static plug-in according to claim 3, characterized in that: The clamp and each insulating shell monomer have a concave-convex matching structure, specifically: each insulating shell monomer has a groove on the upper side and / or lower side for forming a positioning groove on the outside of the insulating shell assembly, and the inner side of the clamp has a positioning convex strip embedded in the positioning groove.

5. The unit main circuit static plug-in according to claim 3, characterized in that: The two clamping hoop units are assembled together by means of a buckle knot structure on the clamping hoop units; or the two clamping hoop units are assembled together by means of fasteners.

6. The unit main circuit static plug-in according to claim 2, characterized in that: The clamp is provided with a mounting hole for installing the static plug-in unit of the main circuit.

7. The unit main circuit static plug-in according to claim 1, characterized in that: The wiring terminal of the plug-in strip is provided with a wiring hole and a bolt fastening assembly which is installed through the wiring hole and is used for connecting the wires.

8. A power distributor, characterized by: It comprises a distributor frame and the unit main circuit static plug-in according to any one of claims 1 to 7, the unit main circuit static plug-in is installed on the distributor frame, and the plug-in row of the unit main circuit static plug-in is connected with a wire for the input or output of the unit main circuit.

9. The power distributor according to claim 8, wherein: There are multiple unit main circuit static plug-ins, each of which corresponds to a unit and is used to plug in with the unit to carry out unit main circuit input and output. Each plug-in row of the unit main circuit static plug-in corresponds to each phase of the unit main circuit input and output.

10. The power distributor according to claim 9, wherein: The plug-in bar for the incoming line of the unit main circuit and the plug-in bar for the outgoing line of the unit main circuit are arranged in left and right columns in the insulating shell.

11. The power distributor according to claim 8, wherein: It also includes an auxiliary circuit static plug-in and a main circuit incoming line connector. The auxiliary circuit static plug-in and the main circuit incoming line connector are installed on the distributor frame. The distributor frame has a frame front plate and a frame rear plate. The main circuit incoming line connector is installed on the frame rear plate for main circuit incoming line. The unit main circuit static plug-in and the auxiliary circuit static plug-in are installed on the frame front plate. The auxiliary circuit static plug-in is arranged above the unit main circuit static plug-in.

12. A multi-circuit unit assembly, characterized by: It includes a unit room and multiple units in the unit room, the rear of the unit room has the power distributor according to claim 8, the rear of the unit has a unit main circuit dynamic plug-in, which is used to be plugged into the corresponding unit main circuit static plug-in on the power distributor, the unit main circuit dynamic plug-in includes an insulating shell and multiple plug assemblies, the plug assemblies are installed in the insulating shell and arranged horizontally in a line in the insulating shell, the plug assembly includes a conductive plug and a terminal block, the front end of the terminal block is plug-connected with the rear socket of the conductive plug, the conductive plug is vertically arranged, and correspondingly, the terminal block is horizontally arranged.

13. The multi-circuit unit assembly according to claim 12, characterized in that: The insulating shell of the unit main circuit dynamic plug-in is a split assembly structure, including multiple insulating shell monomers, which are assembled in sequence in the left and right directions to form an insulating shell assembly. Each plug component is installed between two adjacent insulating shell monomers on the left and right. The insulating shell assembly is combined together through the self-combination structure of the insulating shell monomers, or the insulating shell assembly is combined together through an external combination structure.

14. The multi-circuit unit assembly according to claim 13, characterized in that: The external coupling structure of the unit main circuit dynamic plug-in is a clamping hoop, which is sleeved on the outside of the insulating shell assembly to combine the insulating shell assembly together.

15. The multi-circuit unit assembly according to claim 14, characterized in that: The clamp of the unit main circuit dynamic plug-in is assembled from two clamp monomers on the left and right or upper and lower sides. A concave-convex matching structure is provided between the clamp and each insulating shell monomer for positioning the front and rear positions of the insulating shell monomer.

16. The multi-circuit unit assembly according to claim 15, characterized in that: The clamp of the unit main circuit dynamic plug-in and each insulating shell monomer have a concave-convex matching structure, specifically: the upper side and / or lower side of each insulating shell monomer has a groove for forming a positioning groove on the outside of the insulating shell assembly, and the inner side of the clamp has a positioning convex strip embedded in the positioning groove.

17. The multi-circuit unit assembly according to claim 15, characterized in that: The two clamping hoop monomers of the unit main circuit dynamic plug-in are assembled together through the buckle knot structure on the clamping hoop monomers; or the two clamping hoop monomers are assembled together through fasteners.

18. The multi-circuit unit assembly according to claim 14, characterized in that: The clamp of the unit main circuit dynamic plug-in is provided with a mounting hole for installing the unit main circuit dynamic plug-in.

19. The multi-circuit unit assembly according to claim 12, characterized in that: The number of the unit main circuit static plug-ins is the same as the number of units. Each unit main circuit static plug-in corresponds to one unit and is used to plug into the unit main circuit dynamic plug-in on the unit to carry out the input and output of the unit main circuit. Each plug row of the unit main circuit static plug-in corresponds to each phase of the unit main circuit input and output. Accordingly, the number of unit main circuit dynamic plug-ins for each unit is one, and each plug assembly of the unit main circuit dynamic plug-in corresponds to each phase of the unit main circuit input and output.

20. The multi-circuit unit assembly according to claim 19, characterized in that: The unit is a 1 / 2 unit, and there are two 1 / 2 units in the unit chamber; or, the unit is a 1 / 3 unit, and there are three 1 / 3 units in the unit chamber.

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