Overview
DFWK-12 series outdoor ring main unit is an inflatable outdoor ring main unit developed and produced by the company using foreign technology, according to the characteristics of China's regional distribution network and the actual situation of urban distribution network cable transformation.
DFWK-12 series outdoor ring main unit adopts XGN15-12 box-type fixed AC metal-enclosed switchgear, which has the advantages of modularity, scalability, full insulation, full sealing, safety and reliability, maintenance-free, etc., suitable for any harsh environment, and is widely used in industrial parks, residential areas, streets, airports, various buildings, bustling commercial centers and other places.
DFWK-12 series outdoor ring main unit standard voltage level 12KV, 24KV, can expand the distribution network automation function, realize the intelligence of the ring main unit, and make the power grid stronger and smarter.
Conditions of Use
◆ Ambient temperature: upper limit temperature +50°C, lower limit temperature -40°C, upper daily average temperature not exceeding 35°C;
◆ Relative humidity: the daily average value does not exceed 95%, and the monthly average value does not exceed 90%;
◆ Wind speed: no more than 35m/s;
◆ Pollution level: Class III;
◆ Seismic intensity: 8 degrees;
◆ Ground inclination: no more than 3 degrees;
◆ Installation site: Installed in a place where there is no fire, explosion or violent vibration, good ventilation and no corrosive gas.
Special Conditions
◆ When the equipment is installed at an altitude of more than 1000 meters, special instructions are required so that the company can adjust the SF6 pressure at the time of manufacturing.
◆ If particularly harsh conditions are involved, please be sure to consult with the company.
Features:
High security
The live part is enclosed in the SF6 gas box to achieve full sealing and full insulation;
It has a mechanical interlock that meets the requirements of five preventions to prevent the occurrence of misoperation;
The incoming and outgoing cables are fully insulated and fully sealed touchable connections, and the upper limit ensures personal safety;
The box is equipped with an air pressure monitoring device to realize real-time monitoring of air pressure during operation;
There is an explosion-proof pressure relief device under the rear of the gas box, which has passed the internal combustion arc test of the authoritative organization.
Flexible Solutions
The incoming and outgoing lines are flexible, and the left, right and lower incoming (outgoing) lines can be realized;
The combination mode is flexible, and any combination between units can be realized, and there is no limit to expansion;
Built-in bus expansion mode is adopted to meet the requirements of usability, economy and aesthetics;
The design scheme is flexible and can meet the requirements of the user's site.
The structure is compact and reasonable
The unit modules are of the same size (except for the metering module), and the compact size does not affect the ease of construction.
Economical
Maintenance-free; Small footprint.
Wide range of applications
The stainless steel plate of the airbox part is sealed and welded by the robot with automatic TIG sealing, and the protection level reaches IP67, which can be installed in wet, dusty, salty, mine and any other places with dirty air without taking special precautions.
Intelligent
It can be equipped with electric operating devices and distribution automation terminal equipment to realize intelligent switchgear with the function of "four remotes" and meet the requirements of smart grid for this type of equipment.
Product application standards
GB 1984-2003 High Voltage AC Circuit Breaker
GB 1985-2005 High Voltage AC Disconnector and Grounding Switch
GB 3804-2004 3.6KV~40.5KV High Voltage AC Load Switch (IEC60265)
GB 16926-2009 AC High Voltage Load Switching Fuse Combination Appliance (IEC 60420)
GB 3906-2006 306KV~40.5KV AC metal-enclosed switchgear and control equipment (IEC 62271 )
GB/T11022-2011 Common technical requirements for high-voltage switchgear and control equipment (IEC 60694)
GB/T11023 Test method for sulfur hexafluoride gas seal for high-voltage switchgear
GB 4208-2008 Enclosure protection class (IEC 60529)
DL/T404 3.6KV~40.5KV AC metal-enclosed switchgear and control equipment
DL/T 728-2000 Technical Guidelines for Ordering Gas-Insulated Metal-enclosed Switchgear
Q/CSG 10012 Technical Guidelines for Urban Distribution Networks of China Southern Power Grid
State Grid Corporation of China Material Procurement Standard -12KV, 24KV Ring Main Unit General Technical Specifications Product Reference Standards