The assembly of the GGD distribution cabinet body

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The assembly of the GGD distribution cabinet body is a rather delicate and crucial job. The following is a detailed introduction to it:

### Preparation Work - **Preparation of Tools an

d Materials**: Prepare various assembly tools, such as screwdrivers, wrenches, electric drills, wire crimping pliers, etc., as well as accessories and materials like connecting bolts, nuts, washers, busbars, insulators that are needed.

- **Cleaning of the Site**: Select an assembly site that is spacious, dry and well-ventilated. Clean up the sundries and dust in the site to ensure that the assembly environment is clean and tidy.

- **Inspection of the Cabinet Body**: Inspect all parts of the cabinet body, including the enclosure, side panels, door panels, partitions, mounting beams, etc., to check whether there are defects such as deformation, damage, scratches, etc. If there are any problems, they should be replaced or repaired in a timely manner.

### Assembly Process

1. **Assembly of the Cabinet Body Frame** - **Installation of the Base**: Place the base on the assembly platform. Use a level to adjust the levelness of the base to ensure that the levelness error is within the allowable range. Then use bolts to fix the base on the platform.

- **Installation of the Columns**: Install the columns on the base according to the design requirements and fasten them with bolts. Pay attention to the perpendicularity of the columns. A plumb bob or a laser level can be used for measurement and adjustment.

- **Installation of the Cross Beams and Longitudinal Beams**: Install the cross beams and longitudinal beams on the columns in sequence to form the frame structure of the cabinet body. During the installation process, it is necessary to ensure that the connections between the beams and columns are firm and reliable, and the bolt tightening torque should meet the requirements.

2. **Installation of Side Panels and Door Panels** - **Installation of Side Panels**: Align the side panels with the installation positions on the frame, gently insert them into the card slots or fix them on the cross beams and longitudinal beams with bolts. During the installation, pay attention to the flatness of the side panels to avoid unevenness.

- **Installation of Door Panels**: When installing the door panels, it is necessary to ensure that the doors can open and close flexibly, the door locks are installed firmly, and the gaps between the doors and the cabinet body are uniform. Usually, sealing strips will be installed to ensure the protection level of the cabinet body.

3. **Installation of Partitions and Mounting Beams** - **Installation of Partitions**: Install the partitions in the cabinet body according to the design requirements to separate different functional units. The installation of the partitions should be firm, and the connections between the partitions and the side panels and mounting beams should be tight to prevent loosening.

- **Installation of Mounting Beams**: The mounting beams are used for installing electrical components and busbars, etc. During the installation, it is necessary to ensure their levelness and perpendicularity. The spacing of the mounting beams should meet the installation size requirements of the electrical components.

4. **Installation of Busbars** - **Processing of Busbars**: According to the design drawings, process the busbars by cutting, bending, drilling, etc. The processed busbars should have a smooth surface without burrs, cracks and other defects.

- **Installation of Busbars**: Install the processed busbars on the mounting beams and fix them with insulators or busbar clamps. The connections of the busbars should adopt appropriate connection methods, such as bolt connection, welding, etc. The connection parts should ensure good contact and reliable electrical connection.

5. **Installation of the Grounding System** - **Installation of Grounding Wires**: Install grounding wires inside the cabinet body and reliably connect the grounding terminals of each electrical component to the grounding wires. The grounding wires should be two-color wires with yellow-green stripes, and the cross-sectional area should meet the requirements.

- **Installation of the Grounding Busbar**: Install the grounding busbar at the bottom or side of the cabinet body, gather all the grounding wires to the grounding busbar, and reliably connect the grounding busbar to the grounding bolts of the cabinet body to ensure that the grounding system of the entire cabinet body is reliably grounded.

6. **Installation of Electrical Components** - **Inspection of Components**: Inspect various electrical components, including circuit breakers, contactors, relays, fuses, current transformers, voltage transformers, etc., to check whether their models and specifications meet the design requirements, whether their appearances are intact, and whether their actions are flexible, etc.

- **Installation of Components**: Install the electrical components on the corresponding mounting beams or partitions according to the design drawings and the installation instructions of the electrical components. During the installation process, pay attention to the installation directions and positions of the components to ensure that the connections between the components are correct.

### Inspection and Debugging - **Exterior Inspection**: Conduct a comprehensive exterior inspection on the assembled cabinet body to check whether the surface of the cabinet body is flat and smooth, whether the colors are consistent, and whether the installations of all parts are firm without loosening, deformation and other phenomena.

- **Inspection of Electrical Connections**: Use tools such as multimeters to check whether the electrical connections between the busbars and electrical components are good, whether there are faults such as open circuits and short circuits, and measure the insulation resistance and grounding resistance of each circuit to ensure that they meet the requirements.

- **Function Debugging**: Debug all functions of the distribution cabinet, such as the opening and closing operations of circuit breakers, the attraction and release of contactors, the actions of relays, the setting of protection devices, etc., to ensure that all functions are normal.