Product Introduction
Product Introduction to Enclosure of GGD-Type Low-Voltage Fixed Distribution Cabinet
I. Product Overview
The enclosures of this series of GGD-type low-voltage distribution cabinets are designed and manufactured in strict accordance with national standards such as GB/T 7251.1 Low-Voltage Switchgear and Controlgear - Part 1: General Rules. It is a cost-effective solution specifically tailored for power distribution scenarios requiring "high current, fixed installation, and high reliability". Abandoning complicated fancy functions and returning to the essence of power distribution, it takes "a robust frame structure, ample installation space, and excellent heat dissipation performance" as its core advantages, serving as an indispensable "solid fortress" in power systems.
II. Core Structural Design Features
1. Robust and Reliable Universal Cabinet Structure
High-Quality Steel for Stable Foundation: The main body is made of "high-quality cold-rolled steel plates (Q235A)" or "aluminum-zinc-coated steel plates", forming a high-strength framework through multiple bending processes. The overall structure adopts a "universal cabinet form" with a simple structure and high inherent rigidity, which can effectively support a large number of heavy components (such as large-frame circuit breakers) and resist deformation during transportation and installation.
Modular Size Design: Standard modular design is adopted in the width, depth, and height directions. The serialized models (e.g., GGD1, GGD2, GGD3) cover different current levels, facilitating model selection, production, and arrangement installation.
2. Ample and Flexible Installation Space
Open Installation Design: Different from drawer cabinets, the interior of the GGD enclosure features a "large open and unpartitioned space" (or a detachable side beam design), providing users with unprecedented "installation flexibility".
Strong Compatibility and Expandability: Various fixed circuit breakers, isolating switches, capacitors, and reactors—whether domestic or imported—can be flexibly arranged and installed in this space. Later capacity expansion or line modification is extremely simple; it only requires re-fixing components on the installation crossbeams, greatly reducing the whole-life cycle cost.
3. Scientific and Efficient Ventilation and Heat Dissipation System
Air Inlet at the Bottom, Air Outlet at the Top: To address the significant heat generated during high-current operation, we have scientifically planned the heat dissipation air duct. The bottom of the cabinet and the lower end of the front door are equipped with "large-area mesh panels or shutters" as air inlets, and air outlets are also provided at the top, forming an "efficient natural ventilation cycle from bottom to top" to effectively reduce the temperature rise inside the cabinet.
Adjustable Air Duct Design: The opening/closing and size of the air vents can be flexibly adjusted according to the heat distribution of the user's component layout, achieving optimal heat dissipation efficiency.
4. Safe and Convenient Cable Management
Spacious Cable Chamber: GGD enclosures are usually designed with "two independent front and rear cable chambers" with extremely ample space. This facilitates the laying, binding, and wiring of a large number of primary and secondary cables, greatly reducing the labor intensity of workers.
Standardized Grounding System: A "PE grounding busbar" running through the entire cabinet and sufficient grounding terminals are provided to ensure reliable grounding of all metal components and door panels, meeting safety standards.
5. Humanized and Protective Design
Double-Door Design: The front door usually adopts a double-door design of "full steel plate" or "steel plate combined with glass", which can be opened at a large angle, facilitating observation, operation, and maintenance of all equipment inside the cabinet.
Solid Protection: The default protection level is "IP30", which can effectively prevent the intrusion of solid foreign objects larger than 2.5mm. It can be easily upgraded to "IP40/IP54" by selecting and equipping sealing strips.
Strong Hoisting and Transfer Capabilities: The top of the cabinet is designed with "built-in hoisting rings" or "dedicated hoisting holes", and the bottom can be optionally equipped with an "installation base plate" or "channel steel bracket", ensuring safe and convenient transportation and positioning of heavy cabinets.
III. Technical Parameters (Example)
I. Product Overview
The enclosures of this series of GGD-type low-voltage distribution cabinets are designed and manufactured in strict accordance with national standards such as GB/T 7251.1 Low-Voltage Switchgear and Controlgear - Part 1: General Rules. It is a cost-effective solution specifically tailored for power distribution scenarios requiring "high current, fixed installation, and high reliability". Abandoning complicated fancy functions and returning to the essence of power distribution, it takes "a robust frame structure, ample installation space, and excellent heat dissipation performance" as its core advantages, serving as an indispensable "solid fortress" in power systems.
II. Core Structural Design Features
1. Robust and Reliable Universal Cabinet Structure
High-Quality Steel for Stable Foundation: The main body is made of "high-quality cold-rolled steel plates (Q235A)" or "aluminum-zinc-coated steel plates", forming a high-strength framework through multiple bending processes. The overall structure adopts a "universal cabinet form" with a simple structure and high inherent rigidity, which can effectively support a large number of heavy components (such as large-frame circuit breakers) and resist deformation during transportation and installation.
Modular Size Design: Standard modular design is adopted in the width, depth, and height directions. The serialized models (e.g., GGD1, GGD2, GGD3) cover different current levels, facilitating model selection, production, and arrangement installation.
2. Ample and Flexible Installation Space
Open Installation Design: Different from drawer cabinets, the interior of the GGD enclosure features a "large open and unpartitioned space" (or a detachable side beam design), providing users with unprecedented "installation flexibility".
Strong Compatibility and Expandability: Various fixed circuit breakers, isolating switches, capacitors, and reactors—whether domestic or imported—can be flexibly arranged and installed in this space. Later capacity expansion or line modification is extremely simple; it only requires re-fixing components on the installation crossbeams, greatly reducing the whole-life cycle cost.
3. Scientific and Efficient Ventilation and Heat Dissipation System
Air Inlet at the Bottom, Air Outlet at the Top: To address the significant heat generated during high-current operation, we have scientifically planned the heat dissipation air duct. The bottom of the cabinet and the lower end of the front door are equipped with "large-area mesh panels or shutters" as air inlets, and air outlets are also provided at the top, forming an "efficient natural ventilation cycle from bottom to top" to effectively reduce the temperature rise inside the cabinet.
Adjustable Air Duct Design: The opening/closing and size of the air vents can be flexibly adjusted according to the heat distribution of the user's component layout, achieving optimal heat dissipation efficiency.
4. Safe and Convenient Cable Management
Spacious Cable Chamber: GGD enclosures are usually designed with "two independent front and rear cable chambers" with extremely ample space. This facilitates the laying, binding, and wiring of a large number of primary and secondary cables, greatly reducing the labor intensity of workers.
Standardized Grounding System: A "PE grounding busbar" running through the entire cabinet and sufficient grounding terminals are provided to ensure reliable grounding of all metal components and door panels, meeting safety standards.
5. Humanized and Protective Design
Double-Door Design: The front door usually adopts a double-door design of "full steel plate" or "steel plate combined with glass", which can be opened at a large angle, facilitating observation, operation, and maintenance of all equipment inside the cabinet.
Solid Protection: The default protection level is "IP30", which can effectively prevent the intrusion of solid foreign objects larger than 2.5mm. It can be easily upgraded to "IP40/IP54" by selecting and equipping sealing strips.
Strong Hoisting and Transfer Capabilities: The top of the cabinet is designed with "built-in hoisting rings" or "dedicated hoisting holes", and the bottom can be optionally equipped with an "installation base plate" or "channel steel bracket", ensuring safe and convenient transportation and positioning of heavy cabinets.
III. Technical Parameters (Example)
| Items | Parameters |
| Rated Operating Voltage | 380V / 660V |
| Rated Operating Current | GGD1: ≤ 1000A; GGD2: ≤ 1500A (or 1600A); GGD3: ≤ 3150A |
| Protection Level | IP30 (upgradeable to IP40/IP54) |
| Busbar Material | High-quality electrolytic copper / T2 copper |
| Enclosure Material | High-quality cold-rolled steel plate / aluminum-zinc-coated steel plate (thickness usually 1.5mm-2.0mm) |
| Surface Treatment | Degreasing, phosphating, electrostatic spraying (colors such as RAL7035, customizable) |
IV. Application Fields
With its classic design and reliability, the GGD-type (low-voltage fixed distribution cabinet enclosure) has become an absolute mainstay in the following fields:
With its classic design and reliability, the GGD-type (low-voltage fixed distribution cabinet enclosure) has become an absolute mainstay in the following fields:
Low-voltage power distribution rooms in power plants and substations
Power distribution centers of various industrial and mining enterprises
Floor main distribution boxes/cabinets in buildings, residential communities, and infrastructure facilities
Complete sets of equipment for fixed scenarios such as power compensation and motor control
V. Our Commitment
Solid Material Selection: We never cut corners on materials. We ensure that the plate thickness, spraying process, and material composition fully meet or even exceed standards.
Excellent Craftsmanship: High-precision equipment such as CNC laser cutting and CNC bending is adopted to ensure precise cabinet dimensions and small geometric tolerances, saving time and effort for on-site installation.
Professional Support: We are not just a supplier, but also your technical backing. We can provide structural optimization solutions for scenarios involving high current and special layouts.
Power distribution centers of various industrial and mining enterprises
Floor main distribution boxes/cabinets in buildings, residential communities, and infrastructure facilities
Complete sets of equipment for fixed scenarios such as power compensation and motor control
V. Our Commitment
Solid Material Selection: We never cut corners on materials. We ensure that the plate thickness, spraying process, and material composition fully meet or even exceed standards.
Excellent Craftsmanship: High-precision equipment such as CNC laser cutting and CNC bending is adopted to ensure precise cabinet dimensions and small geometric tolerances, saving time and effort for on-site installation.
Professional Support: We are not just a supplier, but also your technical backing. We can provide structural optimization solutions for scenarios involving high current and special layouts.