GGD

Product details：

Model Meaning
Normal conditions of use
1. The ambient air temperature is not higher than +40 degrees and not lower than -5 degrees. The average temperature within 24h must not be higher than +35 degrees.
2. In-house installation and use, the altitude of the use site must not exceed 2000m.
3. The relative humidity of the surrounding air does not exceed 50 % at a maximum temperature of +40 degrees, and a larger relative temperature is allowed at a lower temperature. (For example, 90 % at +20 degrees) consideration should be given to the possible accidental effect of condensation due to changes in temperature.
4. The tilt of the device and vertical surface does not exceed 5 %.
5. The equipment should be installed in places where there is no severe vibration and impact, and where there is not enough corrosion of electrical components.
6. Users can negotiate with the manufacturer when they have special requirements.
Electrical performance
1. Basic electrical parameters
2. Main circuit scheme
The main circuit of the GGD cabinet is designed with 129 schemes and a total of 298 specifications(excluding the schemes and specifications derived from the changes in the function of the auxiliary circuit and the changes in the control voltage).
Among them, GGD1 49 schemes 123 specifications
GGD2 53 scheme 107 specifications
GGD3 27 programmes 68 specifications
The main circuit scheme is designed and selected using the opinions of the department. Programmes for power plants have been increased. The rated current is increased to 3150A, which is suitable for distribution Transformers with 2000 KA and below.
In addition, GGD1 and GGD2 capacitor compensation cabinets are designed to meet the needs of reactive power compensation. There are 4 main circuit schemes and a total of 12 specifications.
3. Auxiliary circuit scheme
The design of the auxiliary circuit is divided into two parts: the power supply scheme and the power plant scheme. There is enough space in the GGD cabinet to install secondary components. At the same time, a dedicated LMZ3D current Transformer has been developed to meet the power plant and special users. The need for power outage protection.
4. Main bus
Considering the price and feasibility of using aluminum instead of copper, the rated current uses a single aluminum row busbar at or below 1500A. Double copper row busbars are used when the rated current is greater than 1500A. The production plant manufactures the prototype according to this provision and passes the type test. Of course, the manufacturer can also replace the aluminum bus with the same amount of copper bus according to the user's requirements.
5. Electrical Component Selection
A. GGD cabinets mainly use more advanced electrical components that can be mass-produced in China, such as ME, DZ20, DW15, etc.. At the same time, according to economic and reasonable principles, some of the old products that can be used are preserved under full consideration of feasibility. Do not choose your products.
b.HD13BX and HS13BX rotary operating knife switches are special components designed to meet the needs of the unique structure of the GGD cabinet. They change the mechanical operation and retain the advantages of the old product. They are a utility model. Electrical components.
C. If the design department selects new electrical components with better performance and advanced technology according to the needs of users, due to the good installation flexibility of the GGD cabinet, it will generally not be difficult to update the manufacturing and installation of electrical components.
D. In order to further improve the dynamic stability of the main circuit, a special ZMJ combined busbar and insulation support for the GGD cabinet was designed. Bus clips are hot molded by high-strength, high-yin type PPO alloy materials, high insulation strength, good self-extinguishing performance, and unique structure. Simply adjust the block interblock to easily combine into single bus clips or double bus clips. Insulation support is a sleeve type die structure, low cost, high strength, to solve the old product climbing distance is not enough defect.
Product package
The following documents should be provided by the manufacturing plant when supplying the goods.
1. Packing list
2. Product Certificate
3. Use instructions
4. Factory Test Report
5. Related Electrical Drawings
6. Door keys, handling handles and spare parts as stipulated in the contract
Structural characteristics
1. The cabinet of the GGD type AC low-voltage power distribution cabinet adopts the form of a general cabinet. The frame is assembled with partial welding of the 8MF cold curved steel plate steel. The frame parts and special supporting parts are supplied by the designated steel production factory to ensure the accuracy and quality of the cabinet. The spare parts of the general cabinet are designed according to the principle of the module, and have a 20-mode installation hole with a high general coefficient. It can facilitate the factory to achieve pre-production.
2. GGD cabinet design takes full account of the heat dissipation problem in the operation of the cabinet. There are a different number of heat sink holes at the upper and lower ends of the cabinet. When the electrical components in the cabinet are heated, the heat rises and is discharged through the upper slot, while the cold wind is continuously supplemented by the lower slot. The sealed cabinet forms a natural ventilation channel from the bottom up to achieve the purpose of heat dissipation.
3. According to the requirements of modern industrial product modeling design, the GGD cabinet adopts the method of golden section ratio to design the shape of the cabinet body and the segmentation dimensions of each part, making the overall beauty and generosity, and a new face.
4. The cabinet door is connected to the frame with a rotating hinge, which is easily installed and disassembled. There is a mountain rubber strip embedded in the edge of the door. When the door is closed, the bar between the door and the frame has a certain compression stroke, which can prevent the door from colliding directly with the cabinet, and also improves the protection level of the door.
5. The instrument door with electrical components is connected to the frame with multiple strands of soft copper wire. The mounting parts in the cabinet and the frame are connected with a roller screw, and the whole cabinet constitutes a complete grounding protection circuit.
6. The cabinet decent paint chooses the polyfat orange baking paint. Strong adhesion, good texture. The whole cabinet has a sublight tone, avoiding glare effects and creating a more comfortable visual environment for the duty personnel.
7. The top cover of the cabinet can be removed when needed to facilitate the assembly and adjustment of the bus line on the spot. The four corners of the cabinet top are equipped with hanging rings for lifting and loading.
8. The anti-expansion level of the cabinet body is IP30, and users can also choose between IP20-40 according to the requirements of the use environment.