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GCS
GCS Low-voltage switchgear cabinet
GCS type low-voltage withdrawable switchgear is a low-voltage complete distribution device independently developed and designed in China, which is in line with the national conditions and has high technical performance indicators. It is specially designed for distribution systems with three-phase AC frequency of 50Hz, rated working voltage of 380V, 660V and below, and rated current of 4000A and below. This product is designed with safety, economy, rationality, and reliability as its core principles. The main structure is assembled with 8MF steel and adopts a 20mm installation module, which can flexibly combine various functional units. It can not only achieve power distribution and centralized control of electric motors, but also meet the requirements of reactive power compensation. As a new type of low-voltage switchgear that can compete with imported similar products, it has a novel structure, high protection level, and is widely adaptable to multiple industry distribution scenarios, balancing practicality and scalability. It is the preferred equipment in the industrial and civilian distribution fields.
Features
1. Compact modular structure and high space utilization:
adopting a minimum module design of 1/2 unit, the drawer height module is 160mm, and a single cabinet can install up to 11 single unit drawers or 22 1/2 unit drawers. Compared with similar drawer cabinets in the same occupied space, it has more advantages in installed capacity and circuit quantity, and can fully adapt to scenarios with limited space in the distribution room. At the same time, the drawer has good interchangeability, and the same functional units can be quickly replaced, greatly improving operation and maintenance efficiency.
2. Excellent dynamic and thermal stability, reliable safety protection:
The horizontal busbar adopts a flat arrangement, with a rated short-time withstand current of 50-80kA/1s and a peak withstand current of 105-176kA/1s, which can effectively withstand the impact of short-circuit current. The vertical busbar is equipped with flame-retardant plastic functional boards, and each functional room is strictly separated to minimize faults. The protection level can reach IP30 or IP40, and the dust and misoperation prevention performance is outstanding. The drawer unit is equipped with reliable mechanical interlocking devices, clearly marking the positions of opening, closing, testing, and extraction to eliminate the risk of misoperation.
3. Flexible electrical scheme and strong combination adaptability:
Supports mixed combination of fixed and pull-out units, and can flexibly assemble various standard units such as protection, operation, control, and adjustment according to the actual needs of users. The horizontal busbar can be expanded up to 4000A, and the rated current of the vertical busbar can reach 1000A. It can adapt to the distribution and motor control needs of different power levels, covering a variety of industrial and civilian scenarios. The cable room is equipped with two width sizes to choose from, supporting cable up and down entry and exit. The zero sequence current transformer is placed inside the cable room for easy installation and maintenance.
4. Outstanding cost-effectiveness and low lifecycle cost:
Made of high-quality domestically produced aluminum zinc coated plates and 8MF steel, the cost is reduced by more than 35% compared to similar imported products. The standardized production process can shorten the delivery cycle to about 15 days, greatly improving delivery efficiency. Drawer spare parts have strong universality, with operation and maintenance costs only 40% of fixed cabinets. At the same time, their structural strength is superior to similar imported cabinets, and their service life is longer.
5. Adapt to intelligent upgrades and meet market development needs:
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 type testing and factory inspection to ensure that electrical and safety performance meets specifications.
Production process: High precision CNC equipment is used for sheet metal processing, bending, and welding. The frame assembly accuracy is high, and the surface is treated with phosphating and electrostatic spraying, which has good anti-corrosion and anti rust properties and can adapt to complex industrial environments such as humidity and high dust. The core components are all selected from well-known domestic and foreign brands, combined with independently developed adapters, greatly reducing the additional temperature rise of connectors and cable heads, and improving operational stability.
Customized service: Based on the actual needs of users, cabinet size, protection level, electrical scheme, drawer configuration, and intelligent functions can be customized to meet personalized power distribution needs in different scenarios. At the same time, we provide comprehensive pre-sales technical consultation, installation guidance during sales, and one-stop after-sales operation and maintenance services to ensure the long-term stable operation of our products.
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Specification
| Name | Parameter | |
| Rated voltage of main circuit (V) | AC 380(400),(660) | |
| Rated voltage of auxiliary circuit (V) | AC 220,380(400);DC 110,220 | |
| Rated frequency (Hz) | 50(60) | |
| Rated insulation voltage (V) | 660(1000) | |
| Rated current (A) | Horizontal bus | ≤ 4000 |
| Vertical bus (MCC) | 2000 | |
| Rated short-time withstand current of bus (kA,1 s) | 50,80 | |
| Rated peak withstand current of bus (kA/0.1s) | 105,176 | |
| Power frequency test voltage (V/1 min) | Main circuit | 2200 |
| Auxiliary circuit | 1890 | |
| Bus | Three-phase four-wire system | A,B,C,N |
| Three-phase five-wire system | A,B,C,PE,N | |
| Protection class | IP42 | |
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FAQs
What is the core difference between GCS low-voltage switchgear and GCK, MNS switchgear?
All three are withdrawable low-voltage switchgear, with the core difference focused on structural design and performance. GCS is independently developed in China, using a 20mm installation module and an 8MF steel frame. The minimum drawer unit is 1/2 unit, and up to 22 drawers can be installed. It is suitable for heavy current scenarios and has high structural strength; The minimum drawer unit of GCK is 1 unit, and the vertical busbar has no flame-retardant plastic functional board, resulting in poor interchangeability; MNS is an imported technology that uses a 25mm installation module and C-shaped steel frame. The minimum drawer unit is 1/4 unit, and it can be used as a double-sided operation cabinet. It focuses on low current scenarios and has a high cost.
What is the rated current range of GCS low-voltage switchgear and how much power can it be adapted for motor control?
The rated current of the horizontal busbar of this product is ≤ 4000A, and the rated current of the vertical busbar is 1000A. After technical improvement, it can adapt to a maximum current scenario of 6300A. The rated current of the drawer unit circuit is ≤ 400A, and a single cabinet can support a maximum of 250kW motor control circuit, which can meet the centralized control requirements of motors in most industrial scenarios.
Can the drawer unit of GCS low-voltage switchgear be replaced with electricity? What should be noted during maintenance?
The drawer unit supports hot swapping operations, allowing for live replacement without interrupting the operation of the entire power distribution system, greatly improving the convenience of operation and maintenance. Attention should be paid during maintenance: ensure that the drawer is in the “test” or “extraction” position, and disconnect the corresponding circuit power supply; Avoid using brute force to insert and remove drawers to prevent damage to connectors; Regularly check the mechanical interlocking device, connector contact condition, and busbar temperature, clean the dust inside the cabinet to avoid faults.
Can the protection level of GCS low-voltage switchgear be customized? What harsh environments can it adapt to?
The protection level can be customized according to user needs, usually IP30 or IP40, and can be upgraded to higher protection levels to adapt to different environmental requirements. The surface of this product has undergone anti-corrosion treatment, and the vertical busbar is equipped with flame retardant protection, which can adapt to harsh environments with high dust, humidity, and slight corrosion in industries such as petrochemicals and metallurgy. At the same time, it can effectively prevent foreign objects from entering the cabinet and ensure the safe operation of electrical components.
How to achieve intelligent upgrade of GCS low-voltage switchgear, and is the upgrade cost high?
The product reserves installation positions for intelligent monitoring units, which can directly install temperature sensors, power monitoring instruments, and communication modules without the need for large-scale modifications to the cabinet structure. It can achieve “three remote” functions such as remote signaling, telemetry, and remote control, and is compatible with intelligent power distribution systems. The upgrade cost is relatively low, reducing the cost of traditional fixed cabinet renovation by 40%, and can be upgraded step by step according to user needs, balancing economy and practicality.
Related Applications
Power plant distribution system: As the core equipment of low-voltage distribution in power plants, it is mainly used for plant power distribution, centralized control of electric motors, and reactive power compensation. It is suitable for scenarios with high automation and strict requirements for power supply reliability in power plants. It can withstand a large short-term withstand current, effectively cope with load fluctuations in the power system, ensure stable power supply for generator sets and auxiliary equipment, and reserve intelligent interfaces that can be linked with the central control system of the power plant to achieve remote monitoring and operation.
Petrochemical industry: Suitable for harsh operating environments with high dust, humidity, and slight corrosion in petrochemical enterprises, used for low-voltage distribution and motor control in production workshops, storage areas, and control rooms. Stable power supply and precise control can be achieved for various production equipment such as pumps, fans, and reaction vessels. Strict functional room isolation design can effectively prevent the spread of faults. Flame retardant vertical busbars and high protection levels can reduce safety hazards in flammable and explosive environments, ensuring continuous and stable production processes.
Metallurgical industry: In response to the characteristics of high load, high current, and complex working conditions in the metallurgical industry, it is used for low-voltage distribution systems in smelting workshops, rolling workshops, and auxiliary workshops. It can adapt to the centralized control requirements of high-power motors, with excellent dynamic and thermal stability, able to withstand short-circuit current impact, resist high temperature and dust interference in the workshop. At the same time, the modular structure can flexibly adapt to the adjustment of metallurgical production processes, facilitate equipment maintenance and expansion, and reduce downtime during production.
High rise building power distribution: used for low-voltage power distribution, lighting control, and fire equipment power supply in high-rise buildings such as office buildings, hotels, and residences. The cabinet has a compact structure and high space utilization, which can adapt to the limited space of high-rise building power distribution rooms. It supports multi circuit power distribution and can meet the power supply needs of various equipment such as air conditioning, elevators, lighting, and fire protection in buildings. The design of good electrical isolation and safety protection can ensure the safety of building electricity use, avoid safety hazards caused by electrical failures, and adapt to building intelligent systems to achieve fine management of electricity use.
Textile industry: Suitable for the distribution needs of multiple motors and circuits in textile workshops, used for low-voltage distribution and control of various textile equipment such as spinning machines, weaving machines, printing and dyeing machines. Modular drawer design enables independent control and maintenance of different motor circuits without interrupting overall production. Drawer units with good interchangeability can quickly replace faulty units, improving operation and maintenance efficiency. Simultaneously possessing excellent dust and interference resistance, it can adapt to the fiber dust environment in textile workshops, ensuring continuous and stable operation of equipment and helping to improve production efficiency.
