GGD Low-Voltage Distribution Cabinet

Description

he GGD AC low-voltage distribution cabinet is a widely used fixed switchgear assembly for power conversion, distribution, and control in low-voltage electrical systems.

1. Product Overview and Applications
   • Applications: Low-voltage distribution systems for power plants, substations, industrial and mining facilities, commercial buildings, hospitals, offices, water plants, and wastewater-treatment facilities.
   • Operating Ratings: 50 Hz AC (60 Hz on selected configurations), 380 V rated voltage with optional 400/660 V configurations, and rated current up to 3,150 A.
   • Core Function: Safe, reliable power distribution for motors, machine tools, lighting, and downstream equipment, with short-circuit and overload protection.

2. Model Classification and Ratings: The GGD range is classified by breaking capacity and current rating to meet different distribution requirements.

• GGD1: Rated current <=1,000 A and 15 kA breaking capacity for general loads, small commercial sites, and lighting systems.
• GGD2: Rated current <=1,500 A (up to 1,600 A on selected configurations) and 30 kA breaking capacity for medium industrial and commercial applications.
• GGD3: Rated current <=3,150 A and 50 kA breaking capacity for high-capacity or short-circuit-intensive systems in large factories, main distribution rooms, and power plants.

3. Structural Features

• Frame Construction: Locally welded 8MF cold-formed steel with modular 20 mm mounting holes supports standardized production and flexible site assembly.
• Thermal Design: Upper and lower ventilation slots create a natural airflow path to reduce internal temperature rise.
• Protection and Finish: Standard IP30 protection with IP20-IP40 options, hinged doors with protective rubber edging, and a matte electrostatic powder-coated finish for corrosion resistance.
• Internal Layout: Dedicated horizontal-busbar, component, and cable compartments separate power and control circuits for efficient installation and maintenance.

4. Product Advantages

• High Breaking Capacity and Stability: Withstands substantial short-circuit current to protect downstream equipment.
• Flexible Electrical Configuration: Incoming, feeder, capacitor-compensation, and other cabinet types can be combined to meet project requirements.
• Cost-Effective Design: A proven fixed-cabinet structure offers lower manufacturing cost than draw-out switchgear, with straightforward installation and maintenance.