CN201113285Y - A low-voltage combined switchgear - Google Patents

Abstract

The utility model relates to a low-voltage combined switch cabinet. The utility model belongs to the technical field of low-voltage power distribution. The low-voltage combined switchgear is a withdrawable low-voltage switchgear. Its characteristics are: the cabinet body is composed of a frame and a top cover, a front door panel, a rear door panel, and side panels. There is a horizontal busbar room above the cabinet body. Vertical bus cover, the cabinet is equipped with a drawer-shaped independent unit room that can be drawn out. The independent unit room is equipped with a circuit device installation plate installed on a vertical plane. The rear panel of the drawer of the unit room is equipped with incoming and outgoing line connectors. The cabinet body is equipped with wiring plug-ins, and the door panel of the drawer unit room is provided with a circuit breaker operating handle. The utility model has the advantages of compact structure, stability, high strength, complete modular assembly, convenient installation, reliable plugging, adaptable to frequent pulling and plugging, strong versatility, and convenient power-off maintenance or device replacement.

Description

A low-voltage combined switchgear

technical field

The utility model belongs to the technical field of low-voltage power distribution, in particular to a low-voltage combined switch cabinet.

Background technique

At present, there are roughly two types of power distribution cabinets, one is fixed and the other is withdrawable. GGD is the most widely used cabinet type in the fixed type, but the structure of this cabinet type is simple and the degree of modularization is low. Lack of effective isolation between various circuits, when a circuit fails, it is very easy to implicate other circuits. In addition, when one of the circuits needs to be overhauled, because this type of cabinet does not have the characteristics of fixed division, it has a greater potential safety hazard. Cabinet types such as GCS, MNS, and GCK are representative cabinet types in the drawer type. Although they have the characteristics of split cabinets, due to the reasons of the profile itself, there are large errors in the connectors of the drawers when they are inserted. The insertion position of the connector cannot be guaranteed, and the plug and socket of the connector will generate heat due to poor contact and cause a short circuit accident. With the prolongation of the use time, this error will become larger and larger, and it is difficult to guarantee the needs of users for safe, trouble-free and stable operation. In addition, the structural mode of the profile is single, and the flexibility of installing different electronic devices is poor. Since the device mounting plate in the drawer is divided into two layers, the device installation is very inconvenient, and it is difficult to maintain and observe the operating status of the device. This non-vertical plane installation It is difficult to adapt to the application requirements of the constantly updated electronic products.

Contents of the invention

The utility model provides a low-voltage combined switchgear for solving the technical problems existing in the known technology.

The purpose of the utility model is to provide a low-voltage combined switchgear with flexible structure, convenient combination, strong versatility, safety and reliability.

The utility model takes the following technical solutions:

The low-voltage combined switchgear is a withdrawable low-voltage switchgear. Its characteristics are: the cabinet body is composed of a frame and a top cover, a front door panel, a rear door panel, and side panels. There is a horizontal busbar room above the cabinet body. Vertical bus cover, the cabinet is equipped with a drawer-shaped independent unit room that can be drawn out. The independent unit room is equipped with a circuit device installation plate installed on a vertical plane. The rear panel of the drawer of the unit room is equipped with incoming and outgoing line connectors. The cabinet body is equipped with wiring plug-ins, and the door panel of the drawer unit room is provided with a circuit breaker operating handle.

The utility model can also adopt the following technical measures:

The low-voltage combined switchgear is characterized in that: the drawer side plate of the unit room is suspended on the slideway by the card slot, the slideway is installed on the flower beam of the cabinet body, and the drawer rear plate is equipped with an independent circuit grounding plug.

The low-voltage combined switchgear is characterized in that: the cabinet body is provided with an independent grounding bar, and the grounding bar is installed on the contact plate behind the cabinet body.

The low-voltage combined switchgear is characterized in that: the vertical busbar cover is provided with an observation window for observing the plugging state of the connectors.

The low-voltage combined switchgear is characterized in that: the door panel of the drawer unit room is provided with a unit circuit indicator light and a door lock.

The low-voltage combined switchgear is characterized in that: the frame has a middle vertical beam, and the upper door eyebrow, the lower door eyebrow and the secondary room door panel are arranged in front of the cabinet body.

The low-voltage combined switchgear is characterized in that: the incoming and outgoing line connectors are card-type impact connectors.

The low-voltage combined switchgear is characterized in that: the height of the cabinet is 2100-2300mm, the width is 600-1200mm, the depth is 600-1000mm, and there are 3-24 drawer unit rooms.

The utility model has advantages and positive effects:

The utility model is a new generation of cabinet type that combines the fixed cabinet and the drawer cabinet closely, and integrates the advantages of the fixed cabinet and the drawer cabinet. It is characterized by compact structure, stability, high strength, complete modular assembly, convenient installation, The plugging is reliable and can adapt to frequent plugging and unplugging, and it is very convenient for power failure maintenance or replacement of components. Moreover, it can realize front-to-back insertion and a safe and interchangeable method. It can be configured according to the requirements of different industries and users. It is an advanced power distribution system that integrates various applications such as incoming line unit, compensation unit, frequency conversion and soft start unit, fixed (extracted) outgoing line unit and intelligent control unit. cabinet. The extraction unit device is installed in a vertical plane, no matter whether it is to observe the working state of the device or to repair it, it does not need to be pulled out. This greatly reduces the number of drawing and inserting of the drawer, so it has the characteristics of stable operation of the fixed partition cabinet. The drawer guide rails are a pair of double-row ball industrial-type metal sliding guide rails, so as to ensure that the drawer unit is brisk when drawn and inserted, and the insertion position is accurate, and it will not change due to the extension of use time. Ensure that the connectors can still be in good contact after the drawer is repeatedly inserted and inserted to ensure the stable operation of the equipment.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Figure 2 is a schematic diagram of the panel structure of the low-voltage combined switchgear after assembly.

Detailed ways

In order to further understand the content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

See Figures 1 and 2.

The low-voltage combined switchgear is a withdrawable low-voltage switchgear, and its cabinet is composed of a frame, a top cover 1, a front door panel 34, a rear door panel 2, and side panels 6. The frame has a middle vertical beam 33, and an upper door eyebrow 13, a lower door eyebrow 31 and a secondary chamber door panel 35 are arranged in front of the cabinet. There is a horizontal busbar room above the cabinet, and a vertical busbar cover at the rear of the cabinet. The vertical busbar cover is provided with an observation window for observing the plugging status of the connectors. The cabinet body is provided with an independent grounding bar 5, and the grounding bar 5 is installed on the contact plate at the rear of the cabinet body. The cabinet is provided with a drawer-shaped independent unit room that can be drawn out. The drawer side panel 23 of the independent unit room is suspended on the slideway 19 by the draw-in groove, and the slideway 19 is installed on the flower beam 12 of the cabinet body. The independent unit room is provided with a circuit device mounting plate 22 installed on a vertical plane, and the drawer rear panel 27 of the unit room is equipped with incoming and outgoing line connectors 20, 28 and an independent circuit grounding plug 21. The incoming and outgoing line connectors 20, 28 are card type impact connectors. The cabinet body of the wiring room opposite to the drawer is equipped with a wiring plug-in 3, and the door panel 14 of the drawer unit room is provided with a circuit breaker operating handle 16, a unit circuit indicator light 15 and a door lock 17.

Description of the internal structure, combination method and assembly process of the low-voltage combined switchgear:

In the accompanying drawings, 1 is the top cover (ventilation holes are reserved for the upper outlet, and the lower outlet is completely closed); 2 is the rear door panel (fans can be installed if necessary); 3 is the outlet connector (plug) of the primary outlet room; 4 Vertical busbar (full isolation with busbar cover); 5 is independent grounding bar; 6 is side panel (isolation panel between cabinets); 7 is cabinet grounding point; ; 9 is an independent closed busbar room; 10 is a horizontal busbar support; 11 is the advanced Rittal nine-fold profile structure frame (nine-fold profile is light and strong; the modular structure makes assembly more accurate and random); 12 13 is the upper lintel (horizontal busbar room baffle); 14 is the door panel; 15 is the unit circuit indicator light; 16 is the circuit breaker operating handle; 17 is the door lock; 18 19 is a slideway; 20 is a primary outlet connector (socket); 21 is a special grounding plug for an independent circuit; 22 is a circuit device mounting plate; 23 is a drawer side plate; 24 is a drawer bottom plate; 25 26 is the drawer handle; 27 is the back panel of the drawer; 28 is the primary incoming line connector (socket); 29 is the secondary room of the MCC cabinet (the secondary terminal of each circuit is placed); 30 is the bottom plate; 31 For the lower lintel (zero, ground row room baffle); 32 is a tripod (connecting nine fold profiles to form a special connector for the cabinet frame); 33 is a vertical beam; 34 is a front door panel; 35 is a secondary room door panel.

The low-voltage combined switchgear adopts nine-fold profiles (the structure of the basic beam constituting the frame is called nine-fold profiles), and these profiles are fixed by a tripod 32 to form a basic frame 11, and then the entire frame 11 is fixed by special pendants and flower beams 12. The space from the left side to the middle vertical beam 33 is divided into several basic modular units (the space occupied by a basic circuit is a modular unit), and the height of the modular unit can be freely adjusted according to the user's requirements or the size of the device. allocation. Slideways 19 are installed on the flower beam 12, and then the circuit device mounting plate 22, the drawer side plate 23, the drawer bottom plate 24 and the drawer back plate 27 are assembled to form a drawer unit, and the drawer is drawn through the drawer groove on the drawer side plate 23. The unit is suspended on the slideway 19, thus realizing the assembly process of a circuit unit. After assembling all the circuit units, install the vertical busbar 4 . Then install small front door panel 34, secondary chamber door panel 35, side door panel 6, upper door lintel 13, lower door lintel 31, top cover 1, base plate 30 and base 8, so just completed the assembling of a MCC cabinet. The MCC cabinet adopts the structure without exposed electricity, the closed horizontal busbar and vertical busbar configuration, and is equipped with ground wire and neutral busbar. Steel vertical ground straps are standard in each plug-in chest of drawers. A group of MCC is composed of multi-faceted MCC single cabinets, and they are fastened by screws. The MCC cabinets can be combined freely, and each drawer unit of the same module can be freely interchanged according to requirements. SM4000 low-voltage combined power distribution and control cabinet fully meets the standards of IEC-439-1, GB-7251, JEM1195, BS5488 and so on. MCC series cabinet structure can be divided into various functional unit rooms, horizontal busbar room, primary outlet room, secondary line room and so on. Its size (height*width*depth) is 2300/2100mm*600/800/1000mm*600/1000mm (if there is no special requirement, 1000mm deep is the standard size of the double-sided cabinet). Separate the functional unit rooms and between the busbar room and the cable room to minimize arc damage. The incoming cabinet adopts a fixed and independent installation structure, and the inlet and outlet ports are reserved according to the site conditions and specific requirements. According to the site conditions, specific requirements and the different characteristics of various switches, it is divided into: type with vertical busbar, type without vertical busbar . In the appearance structure of the cabinet body, it is divided into: with vertical channels and without vertical channels. The MCC cabinet adopts a fixed independent installation structure, and 4 mounting holes are reserved on the base for fixing the cabinet on site.

Standard cabinet size:

cabinet depth Single side installation method 600mm800mm1000mm Double-sided installation method 1000mm Cabinet width 600mm800mm900mm1000mm 1000mm1100mm1200mm cabinet height 2100mm2300mm 2100mm2300mm

In addition to the standard sizes listed in the table above, the switchgear can also meet special size requirements. (As long as the size change modulus is based on the standard size and 25mm is a basic variable, it can be achieved).

All rib structures are cleaned, rinsed, electroplated or sprayed in multiple steps, and the horizontal busbars are installed on the top of the cabinet to provide the best heat dissipation performance and power distribution, and to facilitate maintenance and installation. The horizontal busbar adopts the installation method of vertical hoisting. In order to provide a relatively large anti-electromagnetic ability, and to minimize the area facing the bus bar, to prevent short circuits caused by accumulation of dust and debris. The vertical bus bar is a copper bar with a chamfer R, so that the power plug of the drawer unit can contact the vertical bus bar to achieve the best effect. The vertical busbar is located at the rear of the cabinet and is supported by support beams. The zero ground row is located at the bottom of the cabinet, and the zero row is supported by a dedicated terminal, and the ground row is installed on the special contact plate for the ground row. In addition, a vertical ground bus bar for each circuit is provided, and the vertical ground bus bar is located in the cabinet. When the drawer unit is inserted, the grounding terminal will be connected to the grounding bus before the power plug. When the drawer unit is pulled out, the ground terminal will be disconnected from the ground bus bar at the end later than the power plug. Therefore, during the insertion and extraction process of the entire drawer unit, the drawer unit is always kept well grounded to prevent personal accidents and ensure personal safety. Each side of the cabinet (single side) can be divided into 12 modules at most (150mm is a basic module), and according to the specific requirements of the configuration, the basic increment is increased by 50mm. In addition, if necessary (if the space permits), 1/2 module loops can be processed, and each cabinet can realize up to 24 loops.

Claims (8)

1. A low-voltage combined switchgear, which is a withdrawable low-voltage switchgear, is characterized in that: the cabinet is assembled by a frame and a top cover (1), a front door panel (34), a rear door panel (2), and a side panel (6) Composition, a horizontal busbar room is arranged above the cabinet, a vertical busbar cover is arranged at the rear of the cabinet, a drawer-shaped independent unit room is provided in the cabinet, and a circuit device installation plate (22) installed in a vertical plane is arranged in the independent unit room, and the unit The drawer rear panel (27) of the compartment is equipped with incoming and outgoing line connectors (20, 28), and the cabinet body of the wiring compartment opposite to the drawer is equipped with a wiring insert (3), and the door panel (14) of the drawer unit room is provided with a circuit breaker. handle (16). 2. The low-voltage combined switchgear according to claim 1, characterized in that: the drawer side plate (23) of the unit room is suspended on the slideway (19) by the card slot, and the slideway (19) is installed on the flower of the cabinet body. On the beam (12), the drawer back plate (27) is equipped with an independent circuit grounding plug (21). 3. The low-voltage combined switchgear according to claim 1, characterized in that: the cabinet is provided with an independent grounding bar (5), and the grounding bar (5) is installed on the contact plate behind the cabinet. 4. The low-voltage combined switchgear according to claim 1, characterized in that: the vertical bus cover is provided with an observation window for observing the plugging state of the connectors. 5. The low-voltage combined switch cabinet according to claim 1, characterized in that: the door panel (14) of the drawer unit room is provided with a unit circuit indicator light (15) and a door lock (17). 6. The low-voltage combined switchgear according to claim 1, characterized in that: the frame has a middle vertical beam (33), and the upper door eyebrow (13), lower door eyebrow (31) and secondary room door panels are arranged in front of the cabinet body (35). 7. The low-voltage combined switchgear according to claim 1, characterized in that: the inlet and outlet connectors (20, 28) are card-type impact connectors. 8. The low-voltage combined switchgear according to claim 1, characterized in that: the height of the cabinet is 2100-2300mm, the width is 600-1200mm, the depth is 600-1000mm, and there are 3-24 drawer unit rooms.

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