Product Introduction
The Low Voltage Power Distribution Switchgear Cabinet is a fixed-type low-voltage switchgear assembly engineered to serve as the backbone of electrical distribution systems. It receives incoming electrical power and distributes it to various downstream circuits while providing essential protection against overloads, short circuits, and ground faults. Designed as an upgraded alternative to older-generation low-voltage switchgear, it incorporates modern design principles and manufacturing techniques to deliver improved performance, reliability, and safety.
This switchgear is suitable for use in power distribution systems with 50Hz AC frequency and a rated operating voltage of 380V, making it compatible with standard low-voltage distribution networks used in most industrial and commercial facilities worldwide. Its fixed-mounted construction ensures structural simplicity and dependable operation, with all switching and protective components permanently installed within the cabinet enclosure for maximum stability and consistency over time.
Available in multiple models with varying current ratings and fault-handling capabilities — from 400A up to 3200A in the GGD series — this product line offers solutions for installations of all sizes, from small commercial buildings to large industrial plants. Each model is built to the same rigorous quality standards and complies with international and national safety standards.
Core Specifications
The following table provides the detailed technical specifications of the GGD series low-voltage power distribution switchgear cabinets. These parameters define the electrical performance and operational limits of each model, helping engineers and specifiers select the appropriate configuration for their specific application requirements.
|
Model
|
Rated Voltage (V)
|
Rated Current (A)
|
Rated Short-Circuit Breaking Capacity (kA)
|
Rated Short-Time Withstand Current (1S) (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(1600)
|
30
|
30
|
63
|
|
GGD2
|
380
|
B 1000
|
30
|
30
|
63
|
|
GGD2
|
380
|
C 600
|
30
|
30
|
63
|
|
GGD3
|
380
|
A 3200
|
50
|
50
|
105
|
|
GGD3
|
380
|
B 2500
|
50
|
50
|
105
|
|
GGD3
|
380
|
C 2000
|
50
|
50
|
105
|
All models are designed for three-phase AC systems operating at 50Hz frequency and comply with IEC 439 "Low-voltage switchgear and controlgear assemblies" and GB 7251 "Low-voltage switchgear assemblies" standards. The GGD1 series is ideal for smaller installations with lower fault levels, while the GGD3 series is designed for heavy-duty applications requiring maximum current capacity and fault interruption capability.
VS Standard Switchgear
When evaluating low-voltage switchgear options, it is important to understand how modern upgraded designs compare to conventional standard switchgear. The Deyan Electric GGD series represents a new generation of low-voltage distribution switchgear that addresses many of the limitations of older designs through improved engineering and manufacturing techniques.
The comparison below highlights the key differences between traditional standard low-voltage switchgear and the upgraded GGD series from Deyan Electric:
|
Comparison Aspect
|
Traditional Standard Switchgear
|
Deyan Electric GGD Series
|
|
Breaking Capacity
|
Lower breaking capacity, typically limited to lower fault levels
|
High breaking capacity up to 50kA (GGD3), handling higher fault currents safely
|
|
Dynamic & Thermal Stability
|
Basic fault withstand capability
|
Excellent dynamic and thermal stability, withstanding severe short-circuit stresses
|
|
Structural Design
|
Conventional layout with limited optimization
|
Innovative structure with optimized internal layout for space efficiency and heat dissipation
|
|
Configuration Flexibility
|
Limited configuration options
|
Flexible electrical configurations adaptable to diverse project requirements
|
|
Protection Rating
|
Basic protection level
|
High protection rating for enhanced safety and environmental resistance
|
|
Assembly & Installation
|
More complex on-site assembly required
|
Convenient assembly design, factory-tested units ready for quick commissioning
|
|
Design Generation
|
Older-generation technology
|
Upgraded replacement for traditional low-voltage switchgear assemblies
|
|
Standards Compliance
|
May meet basic national standards only
|
Compliant with IEC 61439, IEC 439, GB 7251.1, and GB 7251 standards
|
|
Overall Value
|
Lower upfront cost but higher long-term ownership cost
|
Strong practicality with balanced performance and cost-effectiveness
|
The upgraded design of the GGD series translates into tangible benefits for facility owners and operators, including improved safety, reduced downtime, lower maintenance requirements, and greater flexibility to adapt to changing power distribution needs. While traditional switchgear may appear less expensive initially, the enhanced performance and reliability of modern designs typically result in lower total cost of ownership over the equipment's service life.
Typical Applications
Low-voltage power distribution switchgear cabinets are essential components in virtually every type of electrical installation. Their versatility and reliability make them suitable for a broad range of applications across multiple industries and building types.
Power Generation Facilities: Power plants of all types — including thermal, hydroelectric, and renewable energy facilities — rely on low-voltage switchgear to distribute power from generating units to auxiliary systems, plant services, and step-up transformers for grid connection.
Electrical Substations: Substations use these cabinets on the low-voltage side of transformers to distribute power to downstream distribution networks. Compact secondary substations, in particular, benefit from the space-efficient design and reliable performance of the GGD series.
Industrial & Mining Operations: Manufacturing plants, processing facilities, and mining operations depend on robust switchgear to power production equipment, motor control centers, conveyor systems, and plant utilities. The high breaking capacity of the GGD3 series is especially well-suited for the demanding electrical environment of heavy industry.
Commercial & Public Buildings: Hotels, shopping malls, office buildings, hospitals, schools, and commercial centers use low-voltage switchgear as the central distribution point for all building electrical systems, including lighting, HVAC, elevators, security systems, and general power outlets.
Renewable Energy Projects: Wind farms, solar power installations, and other renewable energy projects utilize low-voltage switchgear to collect and distribute generated power before it is stepped up for transmission to the grid. The reliable fixed-mounted design is particularly advantageous in remote locations where maintenance access may be limited.
Infrastructure & Utilities: Water treatment plants, wastewater facilities, transportation infrastructure, and other public utility installations depend on dependable low-voltage distribution to support critical public services.
Structural Advantages
The structural design of the Low Voltage Power Distribution Switchgear Cabinet contributes significantly to its overall performance, safety, and reliability. Every aspect of the cabinet's construction has been carefully engineered to meet the demands of modern power distribution environments.
Innovative Layout Design: The internal layout is optimized to maximize space utilization while maintaining proper clearances and ventilation. Functional compartments — including busbar chambers, breaker compartments, and cable connection areas — are arranged to facilitate efficient power flow and easy access for maintenance.
High Protection Enclosure: The cabinet features a high protection rating that safeguards internal components against dust ingress and accidental contact with live parts. This not only enhances operator safety but also helps maintain a clean internal environment that extends the service life of electrical components.
Robust Steel Construction: Fabricated from high-quality cold-rolled steel plates using CNC forming equipment, the cabinet body provides exceptional mechanical strength and rigidity. This robust construction ensures the cabinet can withstand the electromagnetic forces generated during short-circuit conditions without structural deformation.
Optimized Thermal Management: The design incorporates strategic ventilation openings and airflow pathways that facilitate natural convection cooling. This helps maintain operating temperatures within safe limits even when the equipment is operating at full rated capacity, reducing thermal stress on components and extending service life.
Front-Facing Operator Interface: All controls, indicators, and metering devices are positioned on the front of the cabinet for convenient access and monitoring. This ergonomic design allows operators to safely monitor system status and perform routine operations without needing to access internal live components.
Quality Control
Deyan Electric maintains a comprehensive quality control system that ensures every low-voltage power distribution switchgear cabinet meets the highest standards of quality, safety, and reliability before it leaves the factory.
Incoming Material Inspection: All raw materials and purchased components — including steel plates, busbars, circuit breakers, and instrumentation — undergo incoming inspection to verify they meet specified quality requirements and are sourced from reputable suppliers.
In-Process Quality Checks: Throughout the manufacturing process, quality inspectors perform checks at key production stages — including sheet metal fabrication, surface treatment, assembly, and wiring — to ensure each step meets documented specifications and quality standards.
ISO 9001 Certified System: The entire manufacturing operation is managed under an ISO 9001 certified quality management system, with documented procedures, traceability records, and continuous improvement processes that ensure consistent quality across every unit produced.
Electrical Testing: Each completed cabinet undergoes a series of electrical tests, including insulation resistance testing, dielectric withstand testing, continuity verification, and mechanical operation tests, to confirm proper functioning and compliance with applicable standards.
Final Inspection & Documentation: A final quality inspection verifies that the finished product matches the customer's order specifications and that all required documentation — including test reports, wiring diagrams, operation manuals, and certification documents — is complete and included with the shipment.
Procurement Guide
Selecting the right low-voltage power distribution switchgear for your project involves careful consideration of several factors. This guide provides an overview of the key considerations to help you make an informed procurement decision.
Determine Current Requirements: Calculate the total connected load and expected maximum demand to determine the required rated current for the main incoming breaker and the overall switchgear lineup. Remember to account for potential future load growth to avoid premature capacity limitations.
Evaluate Fault Levels: Determine the available short-circuit current at the point of installation to ensure the selected switchgear model has sufficient breaking capacity and fault withstand ratings. The GGD1 series handles up to 15kA, GGD2 up to 30kA, and GGD3 up to 50kA.
Define Circuit Configuration: Plan the number and types of outgoing circuits required, including their current ratings and protection requirements. Deyan Electric can configure the switchgear with a mix of circuit breaker sizes and types to match your specific distribution needs.
Consider Environmental Conditions: Evaluate the installation environment — including ambient temperature, humidity, dust levels, and potential corrosive elements — to ensure the selected equipment and protection rating are appropriate for the conditions.
Review Certification Needs: Confirm which certifications and standards compliance are required for your project or market. Deyan Electric's switchgear complies with IEC 61439, IEC 439, GB 7251.1, and GB 7251 standards, and carries CE marking for international market acceptance.
Request a Quotation: Once you have defined your requirements, contact Deyan Electric's sales team with your specifications to receive a detailed quotation. The engineering team can also provide technical advice and recommendations to help optimize your switchgear configuration for both performance and cost.
FAQ
Q: What is the difference between low voltage and medium voltage switchgear?
A: Low voltage switchgear is designed for systems operating at voltages up to 1000V AC (typically 380V-480V in most distribution systems), while medium voltage switchgear handles voltages from 1kV up to 36kV or higher. Low voltage switchgear is used for final distribution to loads, while medium voltage switchgear is used for primary distribution and transmission at higher voltage levels. Deyan Electric's GGD series is specifically designed for low-voltage distribution applications.
Q: How do I select the right current rating for my application?
A: To select the appropriate current rating, calculate the total connected load in your system, apply appropriate diversity and demand factors to determine the expected maximum demand, and add margin for future growth. It is also important to consider the available fault current at the installation point to ensure the switchgear has adequate breaking capacity. Deyan Electric's engineering team can assist with sizing recommendations based on your specific load profile and system parameters.
Q: Can the switchgear be customized for specific project requirements?
A: Yes, Deyan Electric offers flexible electrical configurations to meet specific project needs. The switchgear can be customized with different combinations of circuit breakers, metering devices, protection relays, and internal layout arrangements to match your distribution architecture. Contact the sales team with your specific requirements to discuss available customization options.
Q: What maintenance is required for this type of switchgear?
A: Routine maintenance for fixed-mounted low-voltage switchgear typically includes periodic visual inspections, cleaning of internal components (when de-energized), tightening of electrical connections, functional testing of protective devices, and verification of grounding connections. The fixed-mounted design generally requires less maintenance than withdrawable designs due to the absence of complex mechanical racking mechanisms. Detailed maintenance guidelines are provided in the product documentation.
Q: What is the temperature rise rating of the switchgear?
A: The switchgear is designed and tested to comply with applicable temperature rise limits specified in IEC 61439 and GB 7251 standards. These standards define maximum allowable temperature rises for various components within the switchgear assembly under rated load conditions, ensuring safe operating temperatures for both personnel and equipment. Specific temperature rise data can be provided based on the selected model and configuration.
Q: Does the switchgear include power factor correction capabilities?
A: The base switchgear configuration provides distribution and protection functions. Power factor correction capacitors and associated control equipment can be integrated into the switchgear lineup as an option, depending on your specific requirements. Deyan Electric also offers separate high-voltage automatic reactive power compensation devices for applications requiring power factor improvement. Discuss your power quality requirements with the engineering team to determine the best solution.
Q: Can multiple cabinets be connected together in a lineup?
A: Yes, multiple switchgear cabinets can be arranged side-by-side to form a complete switchgear lineup. The main busbars are joined between adjacent cabinets to create a continuous bus system, allowing the lineup to function as an integrated distribution system. This modular approach makes it easy to scale the installation to match the required number of outgoing circuits and total capacity.
Q: What type of circuit breakers are used in the switchgear?
A: The switchgear can be equipped with various types of circuit breakers depending on the specific model and configuration requirements. Options include molded case circuit breakers (MCCBs) for lower current ratings and air circuit breakers (ACBs) for higher current applications. All breakers are selected from reputable manufacturers and comply with applicable international standards for performance and safety.
Q: Is there a maximum number of outgoing circuits per cabinet?
A: The number of outgoing circuits per cabinet depends on the current rating of each circuit, the size of the circuit breakers, and the overall cabinet dimensions. Smaller breakers allow more circuits per cabinet, while larger breakers require more space. Deyan Electric can design custom configurations to optimize the number of circuits within each cabinet while maintaining proper clearances and heat dissipation.
Q: What payment and trade terms does Deyan Electric offer?
A: Deyan Electric works with customers worldwide and offers flexible trade terms to accommodate different procurement requirements. Standard payment terms and trade conditions can be discussed with the sales team during the quotation process. The company has experience serving international markets and is familiar with export procedures, documentation requirements, and international shipping logistics.
Bottom Line
The Low Voltage Power Distribution Switchgear Cabinet from Deyan Electric represents a modern, reliable, and cost-effective solution for low-voltage power distribution needs. As an upgraded replacement for traditional switchgear assemblies, it offers higher breaking capacity, better dynamic and thermal stability, more flexible configurations, and a higher protection rating — all backed by compliance with IEC 61439, IEC 439, GB 7251.1, and GB 7251 standards. With three model series covering current ratings from 400A to 3200A and breaking capacities up to 50kA, ISO 9001 certified manufacturing, and comprehensive quality control processes, this switchgear delivers dependable performance for power plants, substations, industrial facilities, commercial buildings, and renewable energy installations. Whether you are upgrading an existing system or designing a new installation, Deyan Electric has the expertise and product range to provide a distribution solution that meets your needs today and adapts to your requirements tomorrow.
