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Product classification
GGD AC low voltage distribution cabinet
Low voltage switchgear series
- Details
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- Commodity name: GGD AC low voltage distribution cabinet
GGD AC low-voltage distribution cabinet is suitable for power plants, substations, factories and mines and other power users' AC 50Hz, rated working voltage 380V, rated working current up to 3150A distribution system, used for power, lighting and distribution equipment power conversion, distribution and control.
Overview
GGD AC low-voltage distribution cabinet is suitable for power plants, substations, factories and mines and other power users' AC 50Hz, rated working voltage 380V, rated working current up to 3150A distribution system, used for power, lighting and distribution equipment power conversion, distribution and control.
GGD AC low-voltage distribution cabinet is a new type of low-voltage distribution cabinet designed according to the requirements of the superiors of the Ministry of Energy, the majority of power users and design departments, based on the principles of safety, economy, rationality and reliability. The product has the characteristics of high breaking capacity, good dynamic thermal stability, flexible electrical scheme, convenient combination, strong practicality, etc., and can be used as a replacement product for low-voltage complete switchgear.Model meaning
G G D AC low voltage distribution cabinet Fixed installation and wiring of electrical components Power cabinet Conditions of use
• The ambient air temperature is not higher than + 40°C, not lower than -5°C, and the average temperature within 24 hours shall not be higher than + 35°C;
• For indoor installation, the altitude of the place of use shall not exceed 2000m;
• The relative humidity of the ambient air shall not exceed 50% when the maximum temperature is +40°C, and a larger relative humidity should be allowed at lower temperatures (for example, 90% at +20°C) to take into account the influence of condensation that may occur accidentally due to temperature changes;
• If the user has special requirements, they can negotiate with the manufacturer to solve them.Main features
• According to the use, it is divided into: receiving cabinet, feeding cabinet, reactive power compensation cabinet, busbar connection cabinet, lighting distribution cabinet, etc.
• The cabinet body is assembled with C profile or 8MF profile, and there are modular holes on the side of the profile, which is flexible and convenient to assemble.
• The door panel layout is designed using the golden ratio method, which is overall coordinated and beautiful.
• The top cover of the cabinet body can be removed when necessary to facilitate the assembly and adjustment of the main busbar.Main technical parameters
Model Rated voltage(V) Rated current(A) Rated short-circuit breaking current (kA) Rated short-time withstand current (Is) kA) Rated peak withstand current (kA) GGD1 380 A 1000 15 15 30 GGD1 380 B 600(630) 15 15 30 GGD1 380 C 400 15 15 30 GGD2 380 A 1500(600) 30 30 63 GGD2 380 B 1000 30 30 63 GGD2 380 C 600 30 30 63 GGD3 380 A 3150 50 50 105 GGD3 380 B 2500 50 50 105 GGD3 380 C 2000 50 50 105 Electrical performance
Main circuit scheme
The main circuit of the GGD cabinet has 129 schemes designed, with a total of 298 specifications (excluding schemes and specifications derived from changes in the functions of the auxiliary circuit and the control voltage);
Among them:
GGD1 type has 49 schemes and 123 specifications:
GGD2 type has 53 schemes and 107 specifications;
GGD3 type has 27 schemes and 68 specifications;
The main circuit scheme is selected after soliciting opinions from the majority of design and user departments, and the scheme required by the power plant has been added. The rated current is up to 3150A, which is suitable for the selection of distribution transformers of 2000kVA and below. In addition,
GGJ1. GGJ2 capacitor compensation cabinets are designed to meet the needs of reactive power compensation, with 4 main circuit schemes and a total of 12 specifications.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, NLS has also developed a special LMZ3D current transformer to meet the needs of power plants and special users for additional relay protection.Main busbar
Taking into account the price ratio and the feasibility of replacing copper with aluminum, a single aluminum busbar can be used when the rated current is 1500A or less, and a double copper busbar can be used when the rated current is greater than 1500A. The manufacturer manufactures prototypes according to this regulation and passes the type test. Of course, the manufacturer can also replace the aluminum busbar with a copper busbar with the same current carrying capacity according to the user's requirements.
The overlapping surfaces of the busbars are all treated with tinning technology.Selection of electrical components
The GGD cabinet mainly uses more advanced electrical components that can be mass-produced in China. At the same time, based on the principles of economy and rationality, some available old products such as DZ10D, DZ20, etc. are retained on the premise of fully considering feasibility, and obsolete products are not selected.
HD13BX and HS13BX rotary knife switches are special components designed for the unique structure of GGD cabinets. They change the operation mode of the mechanism and retain the advantages of old products. They are a kind of utility model electrical components.
If the design department selects new electrical components with better performance and more advanced technology according to user needs, the GGD cabinet has good installation flexibility and generally will not cause manufacturing and installation difficulties due to the update of electrical components.
In order to further improve the dynamic stability of the main circuit, the GGD cabinet uses ZMJ type combined busbar clamps and insulation supports. The busbar clamp is thermoplastic molded from high-strength, high-flame-retardant PPO alloy material with high insulation strength, good self-extinguishing performance and unique structure. It can be easily combined into a single busbar clamp or a double busbar clamp by adjusting the building block-type interval block. The insulation support is a simple molded structure with low cost and high strength, which solves the defect of insufficient creepage distance of old products.Structural features
The cabinet of the GGD type AC low-voltage distribution cabinet adopts the form of a universal cabinet. The frame is assembled by local welding of 8MF cold-bent steel. The frame parts and special supporting parts are supplied by the designated steel production plant to ensure the accuracy and quality of the cabinet. The parts of the universal cabinet are designed according to the modular principle and have 20-module mounting holes. The high universal coefficient allows the factory to achieve pre-production, which not only shortens the production and manufacturing cycle, but also improves work efficiency.
The design of the GGD cabinet fully considers the heat dissipation problem during the operation of the cabinet. There are different numbers of heat dissipation slots 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 slots, while the cold air is continuously replenished into the cabinet from the lower slots, so that the sealed cabinet forms a natural ventilation duct from bottom to top to achieve the purpose of heat dissipation.
In accordance with the requirements of modern industrial product design, the GGD cabinet adopts the golden ratio method to design the cabinet shape and the division size of each part, making the whole cabinet beautiful and generous, with a new look.
The cabinet door is connected to the frame with a rotating hinge, which is easy to install and disassemble. A mountain-shaped rubber strip is embedded in the folding edge of the door. When closing the door, the strip between the door and the frame has a certain compression stroke, which can prevent the door from directly colliding with the cabinet body and improve the protection level of the door.
The instrument door with electrical components is connected to the frame with multiple strands of soft copper wire, and the mounting parts in the cabinet are connected to the frame with knurled screws. The whole cabinet constitutes a complete grounding protection system.
The cabinet body is painted with polyester orange-shaped baking paint, which has strong adhesion and good texture. The whole cabinet is matte, which avoids the glare effect and creates a more comfortable visual environment for the on-duty personnel.
The top cover of the cabinet can be removed when necessary, which is convenient for the assembly and adjustment of the main busbar on site. The four corners of the cabinet top are equipped with lifting rings for lifting and shipping.
The protection level of the cabinet is IP30, and users can also choose between IP20-- IP40 according to the requirements of the use environment.
| About Huarui Power
The initial factory of Cangzhou Huarui Transformer Co., Ltd. was born in 1989. After developing and growing, it integrated resources and registered a company in July 2004. It is located in Cangzhou City, Hebei Province, which is known as "the first in the world in the hometown of martial arts.
Huarui Power, a high and low voltage power expert, and a supplier of optical storage and charging solutions, is a high-tech enterprise integrating R & D, design, manufacturing, product sales and service operations. It is a qualified supplier of State Grid, a qualified supplier of Sinochem Group, a qualified supplier of China's military enterprises, and the first brand of transformer in Cangzhou.
Huarui Power, its products cover energy-saving distribution transformers, box-type substations, high and low voltage complete sets of electrical equipment, power distribution automation, high-voltage cable branch boxes, etc., provide professional solutions for different industries and fields, and provide a variety of customized power consumption solutions according to the characteristics of customers' power consumption. The products are used in distribution networks and new energy projects, rail transit, metallurgy, petrochemical, real estate and other fields in all provinces and regions across the country.
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Huarui Electric Power
Distribution transformer
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