Shijiazhuang Mingshuo Electric Power Technology Co., Ltd.
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Service: 400-116-5838
WhatsApp:86-18532175010
Email:roger@msdlkj.com
No. 1 Ganjiang Road, Shijiazhuang Economic and Technological Development Zone, Shijiazhuang City, Hebei Province
DFW-12 Outdoor Switchgear (Cable Tap Box)
- Product Description
-
Key Features
Featuring prefabricated, live-able silicone rubber cable terminations that are fully sealed, fully insulated, and maintenance-free—ensuring reliable personal safety. With a compact design and sleek, aesthetically pleasing appearance, the product boasts a robust stainless steel double-layer enclosure, offering an impressive service life of over 20 years.
Achieve regional power outage maintenance without affecting the operation of the main grid, thereby minimizing the scope of the outage.
It can be equipped with one or more SF6 load switches. The wiring configuration is highly flexible, allowing for up to 8 outgoing circuits from a single unit.
Optional surge arresters, short-circuit fault indicators, current-limiting fuses, and more—catering to a wide range of user requirements.
Scope of Application
Widely used in urban areas with high population density, such as city grid upgrades, residential communities, and commercial centers.
Conditions and Environment for Use
● Altitude not exceeding 2500m.
● Ambient temperature: -45°C to +45°C.
● Relative humidity: The daily average should not exceed 95%, and the monthly average should not surpass 90%.
● Installation location: Areas free from fire hazards, explosion risks, conductive dust, chemically corrosive gases, and severe vibrations. If these conditions are not met, users may contact our company for further consultation.
DFW Technical Specifications
Serial Number Name Parameters Serial Number Name Parameters 1 Rated Voltage 12kV 7 Rated Short-Time Withstand Current 25kA/4S 2 Rated current 630A 8 Rated Peak Withstand Current 50kA 3 Power-frequency withstand voltage (phase-to-ground) 42kV/min 9 Rated Interrupting Capacitive Current 45A 4 Lightning Impulse Voltage 75kV 10 Rated breaking inductive current 16A 5 Rated Breaking Current 630A 11 Maximum Rated Interrupting Cycles >100 6 Rated Short-Circuit Making and Breaking Current (Peak) 50kA 12 Number of mechanical operation cycles for closing and opening 2000 Typical DFW Wiring Scheme
Model Wire Number Description A single-line diagram External dimensions (length × width × height) DFW-102K Single-in, Dual-out Branch with One Switch 
1180×1050×1600 DFW-103K One three-way branch with one switch 
1250×1050×1600 DFW-104K One-in-four-way branch with a single switch 
1250×1050×1600 DFW-112K One-in, one-out, two-way branch with a single switch 
1350×1050×1600 DFW-113K One-in, one-out, three-way branch with a single switch 
1420×1050×1600 DFW-114K One-in, one-out, four-way branch with a single switch 
1420×1050×1600 DFW-102K2 Single-in, Dual-branch with Two Switches 
1350×1050×1600 DFW-112K2 One-in, one-out, two-way branch with two switches 
1500×1050×1600 DFW-103K3 One entry with three branches, each equipped with a switch. 
1850×1050×1600 DFW-113K3 One-in, one-out, three-way branch with three switches 
2000×1050×1600 *Note: Users can optionally equip with surge arresters, short-circuit fault indicators, fuses, and more.
Exterior schematic diagram

1. Incoming cable connector; 2. Outgoing cable connector; 3. Branch cable connector
Common Cable Connectors
Manufactured using high-quality, imported insulating rubber via fully automated injection molding, this product features semiconductor shielding layers on both its inner and outer surfaces. The inner layer ensures uniform distribution of the internal electric field, while the outer shielding layer grounds the cable termination, maintaining a zero potential at its surface. At the lower end of the stress cone, the inner semiconductor layer makes tight contact with the cable's own semiconductor layer, and the outer semiconductor layer is securely connected to the external semiconductor layer of the cable termination—and ultimately grounded through the termination's dedicated grounding hole. This design not only eliminates the risk of electric-field concentration at the point where the cable's outer shielding is interrupted but also keeps the outer shielding layer at zero potential, thereby ensuring maximum safety for personnel.
The touchable cable connector is installed directly onto the equipment conduit, and can subsequently be connected to another touchable electrical connector to create multi-way branching lines. Alternatively, it can also be linked to a surge arrester, providing overvoltage protection for the power grid.
Manufactured using high-quality, imported insulating rubber via fully automated injection molding, this product features semiconductor shielding layers on both its inner and outer surfaces. The inner layer ensures uniform distribution of the internal electric field, while the outer shielding layer grounds the cable termination, maintaining a zero potential at its surface. At the lower end of the stress cone, the inner semiconductor layer makes tight contact with the cable's own semiconductor layer, and the outer semiconductor layer is securely connected to the external semiconductor layer of the cable termination—and ultimately grounded through the termination's dedicated grounding hole. This design not only eliminates the risk of electric-field concentration at the point where the cable's outer shielding is interrupted but also keeps the outer shielding layer at zero potential, thereby ensuring maximum safety for personnel.
The touchable cable rear connector is installed onto the touchable cable front connector via a coupling, and its rear end can further accommodate another rear connector through the same coupling, enabling multi-way branching. Alternatively, it can be connected to a surge arrester to provide overvoltage protection for the power grid.
Cable Connection Detail Drawing

1. Equipment conduit; 2. Touchable front connector; 3. Terminal block; 4. Double-ended bolt; 5. Touchable rear connector; 6. Intermediate connector; 7. Insulation plug; 8. Flat washer; 9. Spring washer; 10. Nut; 11. Protective cap; 12. Test cap; 13. Stress cone; 14. Cable (branch)
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