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DFW-12 (10kV) High-Voltage Cable Branching Box Series (European Style, American Style)
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Scope of application
The DFW high-voltage cable distribution box series is widely used for node connections in 10kV cable systems. It is the primary electrical equipment used to collect and tap cables after they exit the switchgear. The cable joints in the distribution boxes are tightly encased with high-grade, imported rubber insulation, ensuring that no live conductors are exposed. For distribution boxes equipped with switches, all switches employed are SF6-insulated load switches.
The DFW branch box is designed for outdoor, maintenance-free operation and offers safe and reliable performance. It features an IP33 protection rating, and its underground tap-off points are flood-resistant. This product is widely used in distribution networks for urban industrial zones, residential communities, commercial centers, mining areas, and large enterprises in industries such as steel, automotive, petroleum, chemical, and cement—as well as other applications. It is particularly well-suited for urban grid renovation projects, significantly reducing investments in electrical equipment and cables while enhancing power supply reliability.
Features
● Compact structure, small footprint, easy installation, convenient operation, and maintenance-free.
● The enclosure is entirely made of metal steel plates or stainless steel plates, with a thickness of 2 mm. It features an anti-corrosion design and special paint treatment, ensuring reliable operation even in harsh environments (service life ≥ 30 years).
● All-weather, fully protected outdoor design, suitable for high-temperature, extreme cold, flood immersion, and high-dust environments.
● Fully sealed and fully insulated design—no insulation clearance required. All high-voltage live parts are connected via prefabricated cable connectors made of silicone rubber or EPDM, effectively ensuring personal safety.
● The flexible combination allows for up to seven outgoing branch circuits and can be paired with SF6 load switches to form a ring network power supply, fully meeting a variety of wiring requirements.
●The cable connector can serve as a switch, allowing live plugging and unplugging while carrying a load, and capable of interrupting a load current of 200A.
● After installing the fault indicator, circuit faults can be quickly detected.
● Low one-time investment, reduced cable length, no additional floor space required, and significant cost savings.
DFW Cable Branch Box Series (European Style)
The European-style cable distribution box is a piece of equipment widely used in recent years for cable-based projects in power distribution networks. Its main features include bi-directional doors and the use of coupling sleeves as connectors for busbars, offering significant advantages such as compact size, clear cable arrangement, and eliminating the need for large-span crossings of three-core cables. The cable connectors employed comply with DIN 47636 standards. Typically, cable connectors with rated currents of 630A are secured using bolted connections.
Technical Parameters
| Rated voltage | 12KV |
| Rated current | 630A |
| Dynamic stability current | 50kA/0.35 |
| Thermal stability current | 20kA/3 |
| 1-minute power frequency withstand voltage | 42KV |
| 15-minute DC withstand voltage test | 52KV |
| Lightning impulse withstand voltage | 105kV |
| Enclosure protection rating | IP33 |
Adapt to the environment
● Ambient temperature: Maximum temperature: +40℃, minimum temperature: -30℃
● Wind speed: approximately 34 m/s (not exceeding 700 Pa)
● Humidity: The daily average relative humidity shall not exceed 95%; the monthly average relative humidity shall not exceed 95%.
●Seismic resistance: Horizontal acceleration no greater than 0.4 m/s², vertical acceleration no greater than 0.15 m/s²
● Installation site inclination: No greater than 3°
●Installation environment: The surrounding air should not be significantly contaminated by corrosive or flammable gases, water vapor, or the like, and the installation location should be free from severe vibrations.
Model and Meaning
Keywords: DFW-12 (10kV) High-Voltage Cable Branching Box Series (European Style, American Style)
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