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GGD
GGD Low-voltage switchgear cabinet
GGD type low-voltage fixed switchgear is a classic and mature low-voltage complete distribution equipment in China, designed and manufactured for distribution systems with three-phase AC frequency of 50Hz, rated working voltage of 380V, 660V and below, and rated current of 3150A and below. This product is designed with practicality, reliability, economy, and durability as its core principles. The main structure is assembled by welding high-quality cold-rolled steel plates, and the overall structure is neat and firm. There is no modular drawer design, focusing on the core needs of power distribution, energy conversion, and reactive power compensation. As a fundamental core equipment in the field of low-voltage distribution, it has mature technology, easy operation, and strong adaptability. It is widely used in various scenarios that require high distribution stability and simple operation and maintenance requirements. It is a basic standard equipment in the industrial, civil, and municipal distribution fields.
Features
1.The overall structure is sturdy and the operational stability is high:
it adopts a fully welded main frame, with plate thickness adapted to the rated current demand. The cabinet has strong overall rigidity and good impact resistance, without vulnerable connection components such as drawer connectors, reducing contact failure hazards. The stability of long-term continuous operation is outstanding, and it is suitable for various long-term full load distribution scenarios.
2.Mature and universal technology, easy operation and maintenance:
The product design follows the principles of standardization and universality, with regular internal component layout and simple and clear wiring methods, without the need for professional and refined operation and maintenance skills. Daily inspections, component replacement, and line maintenance operations are convenient, greatly reducing the technical threshold and operational difficulty of on-site operation and maintenance.
3.Excellent current carrying capacity and stable distribution efficiency:
The main busbar is designed with high-quality copper bars, and the layout is scientifically reasonable. The busbar connection points are treated with special processes, resulting in low contact resistance and low additional temperature rise. It can stably withstand rated current loads, effectively reduce power transmission losses, and ensure the power conversion efficiency of the distribution system.
4.The manufacturing cost is economical and the cost-effectiveness advantage is significant:
adopting a classic and simple structural design, without complex modular drawers and interlocking devices, the selection of raw materials and production processes are highly standardized, and the production and manufacturing costs are controllable. At the same time, spare parts have strong universality and convenient procurement, and the purchase, use, and maintenance costs throughout the entire life cycle are much lower than those of withdrawable switchgear.
5.The protective design is in place and has wide environmental adaptability:
the cabinet adopts a sealed structure design, and the cabinet door is equipped with reliable sealing strips and door lock devices. The protection level can reach IP30 and IP40. The components inside the cabinet are equipped with protective barriers, which can effectively prevent dust, foreign objects from entering and misoperation. It can adapt to various industrial and civil environments with humidity, high dust, and large temperature differences.
Production standards: Strictly follow domestic and foreign standards such as IEC60439-1 “Low voltage switchgear and control equipment” and GB7251.1-2013 “Low voltage switchgear and control equipment – Part 1: Type testing and partial type testing equipment”. Each product undergoes strict factory inspections such as power on testing, voltage withstand testing, and appearance inspection to ensure that electrical and safety performance meets regulatory requirements.
Production process: High precision CNC cutting, bending, and welding equipment are used for cabinet processing. The welding points are polished and shaped, and the surface is treated with a complete set of anti-corrosion treatments such as acid washing, phosphating, and electrostatic spraying. The coating has strong adhesion, scratch resistance, and oxidation resistance, which can effectively improve the anti-corrosion and rust prevention capabilities of the cabinet. The core components are selected from well-known domestic and foreign brands, and standardized brackets are used for component installation. The wiring terminals are selected with high current specifications to ensure the firmness and conductivity of the connection.
Customized service: Based on the actual needs of users, the external dimensions, internal component configuration, busbar specifications, protection level, and incoming and outgoing wiring methods of the cabinet can be customized to meet the personalized needs of different distribution scenarios. At the same time, we provide one-stop services including comprehensive pre-sales technical solution design, on-site installation guidance during sales, after-sales troubleshooting, and component replacement to ensure the stable operation of the product throughout its entire lifecycle.
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Specification
| Model | Rated Voltage (V) | Rated Current (A) | Rated Short – Circuit Breaking Current (kA) | Rated Short – Time Withstand Current (1s) (kA) | Rated Peak Withstand Current (kA) | |
| GGD1 | 380 | A | 1000 | 15 | 15 | 30 |
| B | 600(630) | |||||
| C | 400 | |||||
| GGD2 | 380 | A | 1500(1600) | 30 | 30 | 63 |
| B | 1000 | |||||
| C | 600 | |||||
| GGD3 | 380 | A | 3150 | 50 | 50 | 105 |
| B | 2500 | |||||
| C | 2000 | |||||
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FAQs
What is the core difference between GGD low-voltage switchgear and GCS switchgear?
The core difference between the two lies in their structural form and usage scenarios. GGD is a fixed switchgear with a fully welded structure, no drawer units, and fixed installation of components. It focuses on mature technology, cost-effectiveness, and easy operation and maintenance, and is suitable for scenarios with high requirements for distribution stability and no frequent maintenance needs; GCS is a pull-out switchgear with an assembled structure and modular drawer design. It supports hot plugging and features high flexibility and convenient maintenance, making it suitable for scenarios with high equipment maintenance continuity requirements and multi circuit control.
What is the rated current range of GGD low-voltage switchgear and which distribution scenarios can it be adapted to?
The product has a maximum rated current of 3150A and a rated operating voltage of 380V, 660V, and below. It can be adapted to core components such as main distribution cabinets, distribution cabinets, and reactive power compensation cabinets in power distribution systems, meeting the low-voltage distribution and energy conversion needs of industrial plants, residential areas, municipal venues, small power plants, and other scenarios.
Can GGD low-voltage switchgear be upgraded to intelligence, and what are the upgrade methods?
GGD switchgear can achieve basic intelligent upgrades without the need for large-scale modifications to the cabinet structure. It only requires the installation of power monitoring instruments, temperature sensors, leakage protectors, and communication modules inside the cabinet to achieve real-time monitoring of distribution parameters, fault alarms, and remote data transmission, meeting the basic requirements of intelligent distribution monitoring.
What is the material and anti-corrosion treatment process of the GGD low-voltage switchgear body?
The main frame and panels of the cabinet are made of high-quality cold-rolled steel plates, and the corresponding thickness of plates is selected according to the rated current to ensure the rigidity of the cabinet. The anti-corrosion treatment adopts a complete set of industrial grade processes, which are sequentially subjected to acid washing to remove oil, phosphating to form a film, water washing and drying, electrostatic spraying, and high-temperature curing. The formed anti-corrosion coating is uniform and dense, which can effectively resist moisture, dust, and slightly corrosive environmental erosion, and improve the service life of the cabinet.
What are the incoming and outgoing wiring methods for GGD low-voltage switchgear, and is customization supported?
The conventional inlet and outlet methods for this product are upper inlet and upper outlet, upper inlet and lower outlet. The inlet and outlet methods can be customized according to the user’s distribution site layout requirements, such as lower inlet and upper outlet, lower inlet and lower outlet. At the same time, the size and quantity of inlet and outlet holes can be customized according to cable specifications to meet the cable laying needs of different sites.
Related Applications
Residential community distribution system: As the core equipment for low-voltage distribution in residential communities, it is mainly used for the main distribution cabinet, building distribution cabinet, and reactive power compensation cabinet in the community distribution room, responsible for the overall low-voltage distribution, energy distribution, and power factor compensation functions of the community. The power distribution in residential areas has the characteristics of stable load and low operation and maintenance frequency. The stable operation characteristics and economic cost-effectiveness of GGD switchgear can be perfectly adapted, which can ensure the continuous and stable power supply of residential residents, elevators, lighting, fire protection and other equipment. At the same time, the simple operation and maintenance characteristics reduce the power distribution management cost of residential properties.
General power distribution for industrial plants: Suitable for low-voltage power distribution systems of various small and medium-sized industrial plants, used for the overall power distribution of the plant distribution room and the distribution of power to various production areas, undertaking the power supply tasks of production equipment, lighting, ventilation and other equipment. The on-site environment of industrial plants is prone to dust, humidity, and other conditions. The high protection level and anti-corrosion treatment process of GGD switchgear can effectively adapt to such environments. At the same time, its sturdy structure and excellent current carrying capacity can stably withstand the load fluctuations of plant production, ensuring the normal operation of production equipment.
Municipal Public Venue Power Distribution: Used for low-voltage power distribution systems in public venues such as shopping malls, supermarkets, sports halls, libraries, and municipal office buildings. As the main distribution cabinet and distribution cabinet, it provides stable power distribution for lighting, air conditioning, elevators, fire protection systems, public facilities, etc. in the venues. Public venues have extremely high requirements for the safety and stability of power distribution. The design of GGD switchgear without vulnerable contact parts greatly reduces the risk of faults. At the same time, the neat layout and simple operation make it easy for venue operation and maintenance personnel to conduct daily inspections and emergency response, ensuring the normal operation of the venue.
Rural distribution network and township municipal distribution: adapted to low-voltage distribution scenarios such as rural power grid renovation, township streets, township health centers, schools, etc., responsible for power distribution, energy conversion, and reactive power compensation functions within the region. The rural and township distribution scenarios have the characteristics of relatively weak operation and maintenance technology and large environmental temperature differences. The GGD switchgear is easy to operate and has a wide adaptability to the environment, which can effectively adapt. At the same time, the economic cost and universal spare parts can reduce the construction and maintenance costs of rural distribution networks, and improve the stability of distribution networks.
Power distribution for small power plants and pumping stations: Used for the distribution system of plant electricity and equipment in small hydropower plants, thermal power plants, pumping stations, and other scenarios, responsible for the low-voltage distribution and control functions of auxiliary equipment in power plants and pumping equipment in pumping stations. This type of scenario requires high operational stability and current carrying capacity of distribution equipment. The excellent current carrying performance and non-contact fault hazard design of GGD switchgear can stably withstand the starting load and long-term operating load of equipment, ensuring the continuous and stable operation of core equipment in power plants and pump stations.
