distribution cabinet

I. Low-voltage Distribution Box: The "Central Nervous System" of the Power System The low-voltage distribution box is a power distribution device that integrates electrical components such as circuit breakers, contactors, and relays. It can achieve power distribution, switch control, and fault protection for electrical equipment. Its core advantages are as follows:   Flexible power distribution: It distributes electrical energy to multiple circuits as required, meeting the power demands of different equipment. Safety protection: It is equipped with overload, short-circuit, and leakage protection devices to avoid electrical accidents. Convenient management: It centrally controls the on-off of the circuit, simplifying the maintenance process of the power system. II. Analysis of Core Parameters: Selecting the Right Product by Understanding the Specifications Electrical parameters: Determining the "heart" performance of the equipment   Rated voltage: The main circuit is commonly 380V AC (suitable for industrial equipment such as three-phase motors), and some models support 660V AC. The auxiliary circuit covers 220V AC/DC, etc., and it needs to be matched according to the voltage of the control system. Rated current: The range is from 400A (small distribution box) to 4000A (large power distribution system). For example, the rated current of the vertical bus system of the GCK series is 400-800A, and it needs to be selected by calculating according to the total power of the load. Breaking capacity and withstand current: Rated breaking capacity (e.g., 15kA for PGL1 type and 30kA for PGL2 type): It refers to the ability to quickly cut off the current during a short circuit. The higher the value, the stronger the safety. Short-time withstand current (e.g., 80kA/1 second for the horizontal bus of the GCK series): It measures the ability of the equipment to withstand the instantaneous short-circuit current, ensuring that the equipment is not damaged during a fault.   Environmental parameters: The key to adapting to complex working conditions   Temperature and humidity: The normal operating temperature is -5℃ to +40℃, and the humidity does not exceed 50% (at 40℃). If the environment is humid (such as in basements or outdoors), a moisture-proof box should be selected. Altitude and protection level: For indoor use, the altitude does not exceed 2000m. The protection level is above IP40 (preventing solid foreign objects and splashing water), and for outdoor use, it needs to reach IP54 or higher (preventing heavy rain and dust).   Structural design: The convenience of installation and expansion   Installation method: It supports surface-mounted on the wall, recessed installation in the wall (indoors), or floor-mounted, surface-mounted on the wall outdoors. It needs to be selected according to the space conditions. Expandability: The modular design allows for flexible addition or reduction of circuits. For example, new circuit breakers or leakage protectors can be added to adapt to the expansion requirements of future loads. III. Three Major Application Scenarios: Matching Functional Configurations as Required Industrial manufacturing: Ensuring the stable operation of the production line   Scenario: Power distribution for equipment such as machine tools, fans, and conveyors in small factories and workshops. Requirement: High rated current (such as above 800A) and strong breaking capacity (to deal with the impact current during motor startup). The GCK series or customized industrial-grade distribution boxes are recommended.   Commercial buildings: Efficiently managing diverse electrical equipment   Scenario: Power distribution for lighting, air conditioning systems, elevators, charging piles, etc. in shopping malls. Requirement: Multi-circuit control (such as 10-30 circuits) and intelligent monitoring (real-time display of voltage/current). An intelligent distribution box with an RS485 communication interface can be selected for convenient remote management.   Infrastructure: A reliable choice for harsh environments   Scenario: Outdoor power distribution cabinets, municipal engineering, and new energy charging piles. Requirement: High protection level (such as IP65 for water and dust protection) and corrosion-resistant housing (stainless steel material) to ensure long-term operation in humid, dusty, or salt spray environments. IV. Purchase Guide: Pitfall Avoidance Points and Selection Skills Clarify the load requirements: Calculate the total power (kW) → Convert the rated current (I = P/√3/U/cosφ), and reserve a 20% redundant capacity to avoid overload. Example: For a 30kW three-phase device, the current is approximately 57A, and a distribution box with a rated current of 80A can be selected. <li style="color: rgba(0, 0, 0, 0.85) !important; fon

The afterglow of the Spring Festival is still there, and the new year has already begun. Fujian Guozhiyun officially started construction on February 5, 2025. With a new attitude and full enthusiasm, we will greet the opportunities and challenges of the new year and start a new journey of working hand in hand with our customers.     The past year has been full of challenges and opportunities for Guozhiyun and the entire foreign trade automation electrical equipment industry. The ever-changing global trade pattern, the rapid iteration of technology, and the diversification of market demand have brought many uncertainties to the development of the industry, but also spawned new growth space. With its profound technical background, keen market insight, and strict pursuit of quality, Guozhiyun has stood out in the fierce market competition, established long-term and stable cooperative relationships with many customers, and jointly overcome technical difficulties one after another, achieving steady growth in business.   In terms of technological innovation, Guozhiyun has always been unwavering in increasing its R&D investment, bringing together a group of top automation and electrical experts and engineers in the industry, and is committed to developing automation and electrical equipment with higher performance, greater intelligence, and greater energy conservation and environmental protection. These innovative achievements have not only effectively improved the competitiveness of products, but also provided strong support for customers' production line upgrades and production efficiency improvements. For example, the company's independently developed new intelligent automation control system can achieve accurate monitoring and intelligent scheduling of the production process, greatly improving the flexibility and stability of production, reducing labor costs and production risks, and is well received by customers.   The new year has begun. With full expectations and new goals, we are ready to continue to deepen our research and development, production and service of automated electrical equipment to create more value for you.   Thank you again for your continuous support and trust in Fujian Guozhi Cloud. Sincerely wish you a prosperous business and all the best in the new year!    

Outdoor distribution boxes are widely used in various outdoor occasions, such as construction sites, parks, road lighting, billboards, etc. On construction sites, it provides a stable power supply for various construction equipment to ensure the progress of the project.   The outdoor distribution box has excellent waterproof and dustproof performance, which can effectively protect the internal electrical equipment in bad weather and environment, and ensure the stable operation of the power system. It is made of sturdy and durable materials, has good weather resistance and impact resistance, and can resist the erosion of external factors for a long time. At the same time, the structure design of the outdoor distribution box is reasonable, which is easy to install and maintain, and can meet the power distribution needs of various outdoor scenes. In addition, it also has good heat dissipation performance, which can effectively reduce the temperature of the equipment and extend the service life.     As an important device in the power system, the outdoor distribution box has various functions. It is mainly used for power distribution and management in outdoor environments, and can effectively control, protect and monitor the circuit. Through internal circuit breakers, leakage protection switches and other electrical components, the outdoor distribution box can manually or automatically connect or disconnect the circuit to meet the power needs of different equipment. At the same time, it also has overload, short circuit, leakage and other protection functions, which can quickly cut off the power supply when a circuit fails to protect the safety of equipment and personnel.  

Guozhiyun, dedicated to providing automated electrical solutions and services, has successfully cooperated with a large shopping mall complex in Ethiopia. Guozhiyun provides customized services for it, and tailors high and low voltage distribution cabinet solutions for it according to the scale, layout and power requirements of the shopping mall. From high-voltage 10KV switchgear to high-efficiency transformers, to low-voltage distribution cabinets and branch distribution boxes, every link takes into account the efficient distribution of electric energy. After the distribution cabinet was delivered, Guozhiyun's products and services won high praise and recognition from Ethiopian customers, and they look forward to our next cooperation. Can power distribution cabinets help large shopping malls? Power distribution cabinets are equipped with intelligent energy management systems to monitor and analyze energy consumption in shopping malls in real time, so as to formulate more effective energy-saving strategies. According to the actual power demand of the shopping mall, power resources are intelligently allocated. Real-time monitoring of power consumption in various areas, effective management of various loads in the shopping mall, such as automatically adjusting the operating status of air conditioners, lighting and other equipment during low-peak power consumption periods, optimizing power distribution and reducing energy consumption. With fault detection and preventive maintenance functions, problems in the power system can be discovered and handled in a timely manner to avoid losses in the shopping mall due to equipment failures.

Daily care: Regularly check whether there are signs of pests and rodents in the distribution cabinet, and take appropriate trapping measures to prevent pests and rodents from damaging electrical equipment. Confirm whether all warning signs and maintenance signs are placed in the correct position, and whether emergency tools and lamps are complete and normal. Check whether the cable connectors are hot and discolored, whether the grounding wires are rusted, and ensure that the cable connections are firm and not overheated. Check whether the capacitor casing in the capacitor cabinet is in good condition, whether there is leakage or expansion, and whether the indicator light is in good condition. Clean the inside and outside of the distribution cabinet regularly to remove dust and dirt, and maintain good ventilation and heat dissipation conditions. First level maintenance: Check whether the busbar and its lower lead are firm, whether the secondary circuit wiring is firm, and whether the fuse is intact. When the air switch is disconnected without capacitor, test the action of the capacitor controller, and adjust the overvoltage protection, undercurrent protection, and switching threshold. All indicator lights should be intact, check whether the controller switch position is normal, the operation should be normal, and whether the manual debugging mechanical interlocking part is reliable. Check whether the fasteners of each soft starter and inverter are loose. Secondary maintenance: Check whether the drawer switch can be pushed in or out flexibly, whether its mechanical locking is reliable, and whether the contactor contacts are in good condition. Check whether the elastic force of each blade in the circuit breaker is normal and whether the arc extinguishing device is intact. Check whether the wiring nuts of each cable head are tightened to ensure the stability of the cable connection. After disconnecting the main switches of the power receiving cabinet and the contact cabinet, check whether the secondary wiring head has good contact and is tightened without looseness. Safety Precautions: Before maintenance, the power supply must be cut off to ensure that the voltage on the power distribution cabinet has been eliminated. Operators should wear anti-static clothing, insulating shoes, and insulating gloves for operation. During maintenance, strictly abide by safety regulations and recommendations. If necessary, contact professionals for repairs.