DFW-12/24 Outdoor Cable Distribution Box with SF6 Insulated Ring Main Unit

Reliable Power Distribution Node for Urban MV Grids

The DFW-12/24 Cable Distribution Box is a compact outdoor switchgear solution for 12kV to 24kV medium-voltage (MV) networks. Equipped with fully sealed SF6 ring main unit (RMU) modules, this model ensures maintenance-free operation, enhanced safety, and rapid fault isolation in cable distribution systems. It’s widely used in urban residential zones, industrial parks, and renewable energy interconnection points.

🔹 Key Features at a Glance

• Rated Voltage: 12kV / 24kV

• Rated Current: Up to 630A

• Structure: Modular RMU, SF6 insulated, fully sealed

• Ingress Protection: IP33/IP44 depending on configuration

• Cable Interface: Supports 2–6 incoming/outgoing lines

• Interlock Mechanism: Prevents misoperation, ensures safety

• Compliance: IEC 62271-200, GB/T 11022-2011

📊 Technical Specifications

Specification	DFW-12/24 Model Range
System Voltage	12kV / 24kV
Frequency	50Hz
Rated Current	630A
Short-Circuit Withstand	20kA / 1s
Cable Ports	2 to 6
Insulation Medium	SF6 gas
Protection Level	IP33 (standard), upgradable to IP44
Ambient Temperature	-40°C to +50°C
Enclosure Material	Stainless steel or powder-coated steel

🏙️ Application Scenarios

• Urban Power Distribution: Installed at MV junctions in smart cities and residential districts

• Renewable Energy: Cable interconnection point between solar/wind farms and the main grid

• Industrial Zones: Compact layout fits well in industrial corridors and fenced substations

• High-Reliability Areas: Where fault isolation and sectionalizing are crucial for uptime

Compared to traditional air-insulated branch boxes, this SF6 variant offers enhanced safety, longer service life, and better fault isolation performance under extreme weather conditions.

💬 Verified Customer Feedback

• ⭐⭐⭐⭐⭐ “Perfect match for our MV solar farm grid point. Weatherproof and zero gas leakage after 18 months.”
  — Neil D., Grid Manager, Solara Utility (Canada)

• ⭐⭐⭐⭐ “Installation was quick, and the pre-tested interlocks made commissioning easier.”
  — Andrea S., Distribution Engineer, WestLine Power (Italy)

• ⭐⭐⭐⭐⭐ “We placed over 20 DFW-12/24 boxes across our smart community rollout—no failures reported so far.”
  — Michael J., Infrastructure Lead, UrbanGrid Solutions (USA)

• ⭐⭐⭐⭐ “Compared to traditional branch cabinets, this unit takes half the space. Ideal for narrow alleys.”
  — Laura H., City Planner, PowerWest London

• ⭐⭐⭐⭐⭐ “All indicators are visible and easy to read. A great upgrade over our previous oil-insulated boxes.”
  — Thomas R., Operations Director, Northern Substations (UK)

🏭 Manufacturer Information

Produced by Wei Shoe Elec, the DFW-12/24 switchgear series is certified to ISO 9001, ISO 45001, and ISO 14001 standards. All units are factory tested and meet full IEC 62271 standards. As an experienced OEM for utility-grade switchgear, we focus on reliability, safety, and customization.

Author: Thor – Senior Electrical Engineer at Wei Shoe Elec
📞 Phone: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]

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