DFW-12 High Voltage Cable Branch Box（Outdoor Substation）
Short Description:
DFW cable branch box is designed for outdoor maintenance free operation, safe and reliable and its protection degree reaches IP33. The underground branch connector is anti-flood. It is widely used in urban industrial district, residential district, commercial center, mining area, large scale enterprises such as steel, automobile, petroleum, chemical industry, cement, and other occasions, It is particularly suitable for urban power grid reconstruction project, which can greatly save the investment of electrical equipment and cables, and improve the reliability of power supply. This equipment complies with the requirements of standard IEC62271-200,IEC62271-100 etc.
Product details
Purpose
DFW-12 series outdoor ring main unit is an inflatable outdoor ring main unit developed and produced by the company using advanced foreign technology, based on the characteristics of distribution networks in various regions of China and the actual situation of urban distribution network cable transformation, with international first-class standards.
The DFW-12 series outdoor ring main unit adopts the LXXGN6-12/24 series SF6 fully sealed and insulated ring main unit switchgear. This switchgear has the advantages of modularity, scalability, full insulation, full sealing, safety and reliability, and maintenance free. It is suitable for any harsh environment and is widely used in industrial parks, residential areas, streets, airports, various buildings, bustling commercial centers, and other places.
The DFW-12 series outdoor ring main unit has standard voltage levels of 12kV and 24kV, and can expand the automation function of the distribution network, realizing the intelligence of the ring main unit and making the power grid stronger and smarter.
Normal Usage Conditions
Environmental temperature: maximum temperature+50 ℃ , minimum temperature -40 ℃ , maximum daily average temperature not exceeding 35 ℃ ;
Relative humidity: The daily average value does not exceed 95%, and the monthly average value does not exceed 90%;
Wind speed: not exceeding 35m/s;
Pollution level: Level III;
Earthquake intensity: 8 degrees;
Ground inclination: not more than 3 degrees;
Installation location: Install in a place without fire, explosion, or severe vibration, with good ventilation, and without corrosive gases.
Special conditions
When the equipment is installed at an altitude of over 2000 meters, special instructions should be given so that the company can adjust the SF6 pressure during manufacturing.
If there are special and harsh conditions involved, please be sure to consult the company.
Product Features
High security
All live parts are enclosed in SF6 gas boxes, achieving full sealing and insulation;
Equipped with mechanical interlocking that meets the five prevention requirements, preventing the occurrence of misoperation;
The incoming and outgoing cables adopt a fully insulated, fully sealed, and touchable connection method to ensure personal safety to the greatest extent possible;
The box is equipped with a pressure monitoring device to achieve real-time monitoring of air pressure during operation;
There is an explosion-proof pressure relief device located below the back of the gas box, which has passed the internal combustion arc test conducted by authoritative institutions.
Flexible plan
Flexible inlet and outlet methods, allowing for left, right, and bottom inlet (outlet) lines;
The combination method is flexible, and all units can be combined freely with unlimited expansion;
Adopting built-in busbar expansion method, fully meeting the requirements of usability, economy, and aesthetics;
The design scheme is flexible and can meet the on-site requirements of users.
Compact and reasonable structure
All unit modules have the same size (except for metering modules), with compact dimensions that do not affect the convenience of construction.
Economy
Maintenance free; Small footprint, high cost-effectiveness; The service life exceeds 30 years.
Widely applicable
The stainless steel plates in the air box are fully automatic TIG sealed and welded by robots, with a protection level of IP67. They can be installed in damp, dusty, salt polluted, mining, and any air polluted places without the need for special preventive measures. Intelligence
We can provide electric operation devices and distribution automation terminal equipment to achieve intelligent switching equipment with "four remote" functions, meeting all the requirements of the smart grid for such equipment.
