SF6 gas-insulated metal-enclosed switchgear
The UN7-72.5kV series gas-insulated metal-enclosed switchgear is suitable for the following locations:
· Inside offshore and onshore wind turbine towers connected to a 72.5 kV voltage grid
· 72.5kV voltage-rated grid-connected photovoltaic power generation systems, both offshore and onshore, installed outdoors as well as inside box-type substations.
· Outdoor and indoor transformer substations for offshore and onshore energy storage systems connected to a 72.5 kV voltage grid
Classification
Product Center
▎Product Features
· Safe and reliable
· Meets outdoor industrial and mining requirements, and adapts to both marine and land environmental conditions.
· Comprehensive solutions with flexible combinations
· On-site installation—no disassembly, no inflation, and no maintenance required.
▎Operating Environment Conditions
· For outdoor or indoor use;
· Altitude: ≤5000 m (If the operating altitude of the equipment exceeds 2000 m, this must be specifically noted);
· Ambient temperature: Maximum temperature +65℃, minimum temperature -40℃, average value within 48 hours ≤35℃;
· Environmental humidity: Suitable for all humid environments;
· Pollution degree: Level 4 pollution;
· Corrosion resistance class: Offshore C4H;
· Seismic resistance level: AG5 (horizontal acceleration 0.3g, vertical acceleration 0.15g);
· Electromagnetic interference: The amplitude of electromagnetic interference induced in the secondary system ≤ 1.6 kV;
· Installation environment: There should be no explosive or corrosive gases in the surrounding air, and the installation location should be free from frequent, severe vibrations or impacts.
· Note: If the operating environment conditions exceed those specified above, please consult with the company to arrange custom solutions.
▎Applicable Standards
· GB/T 7674-2020 Gas-insulated metal-enclosed switchgear with rated voltage of 72.5 kV and above
· IEC62271-203:2011 Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
· IEC60694-2002 Common Technical Requirements for High-Voltage Switchgear and Control Equipment
· GB/T3906-2020 and IEC 62271-200:2011—3.6 kV to 40.5 kV AC metal-enclosed switchgear and control equipment
· Common technical requirements shared by GB/T 11022-2020 and IEC 62271-1:2017—Standard for High-Voltage Switchgear and Control Equipment
· GB/T1984-2014 and IEC 62271-100:2017 AC High-Voltage Circuit Breakers
· GB/T4208-2017 and IEC60529 Enclosure Protection Ratings (IP Codes)
· GB/T16927.1～2-2013 High-Voltage Test Techniques
· GB/T3309-1989 Mechanical Tests for High-Voltage Switchgear at Ambient Temperature
· GB/T 4473-2018 Synthetic Testing of High-Voltage AC Circuit Breakers
· GB/T5582-1993 Pollution Severity Levels for External Insulation of High-Voltage Power Equipment
· GB/T11023-2018 Test Method for Gas Sealing of Sulfur Hexafluoride in High-Voltage Switchgear
· DL/T402-2017 Technical Specifications for Ordering High-Voltage AC Circuit Breakers
· DL/T486-2021 Technical Specifications for Ordering High-Voltage AC Disconnect Switches and Earthing Switches
· DL/T403-2017 Technical Specifications for Ordering 12kV~40.5kV High-Voltage Vacuum Circuit Breakers
· DL/T404-2018 3.6kV～40.5kV AC Metal-Enclosed Switchgear and Control Equipment
· DL/T593-2016 Common Technical Requirements for High-Voltage Switchgear and Control Equipment Standards
▎Product Parameters
Environmentally Friendly Gas-Insulated Ring Main Unit Equipment
The UN0-12, 24/630-25kA environmentally friendly gas-insulated ring main unit is a fully sealed and fully insulated ring main unit that employs advanced vacuum interrupter technology. From the design perspective, it meets environmental requirements by being oil-free and SF6-free. All conductive parts inside the switchgear are housed in a sealed stainless steel enclosure, with dry air serving as the primary insulating medium within the enclosure. The main switch uses a vacuum arc-extinguishing system, while the isolating switch features a three-position structure. The enclosure boasts an IP67 protection rating, making it immune to the effects of condensation, frost, salt spray, pollution, corrosion, ultraviolet radiation, and other similar factors.
SF6 Gas-Insulated Ring Main Unit Equipment
UN3-12, 24-1250-2500-3150-31.5kA gas-insulated ring main units are designed and manufactured in compliance with GB and IEC standards. They feature a fully insulated, hermetically sealed structure and are suitable for harsh environments such as those characterized by pollution, salt spray, humidity, and high altitudes. A variety of configurations are available to meet even more demanding requirements. <br/> Applied to <br/> 10. Offshore and onshore wind power step-up substations for 20kV voltage grid integration <br/> 10. Offshore and onshore energy storage and photovoltaic step-up substations for 20kV voltage networks <br/> · 10, 20 kV voltage-level substations for power transmission and distribution, used for voltage boosting or reducing. <br/>
SF6 Gas-Insulated Ring Main Unit Equipment
The UN3-36, 40.5-630-25-31.5 kA series gas-insulated ring main units are designed and manufactured in compliance with GB and IEC standards. They feature a fully insulated, hermetically sealed structure and are suitable for harsh environments such as those characterized by pollution, salt spray, humidity, and high altitudes. A variety of configurations are available to meet even more demanding requirements. <br/> Applied to <br/> 33. 35kV voltage-rated box-type substations for offshore and onshore wind power generation; <br/> 33. Offshore and onshore energy storage systems and photovoltaic box-type substations for 35kV voltage networks; <br/> 33. Ring main units for substations and distribution networks operating at 35 kV.
Environmentally Friendly Gas-Insulated Ring Main Unit (Spare)
The UN0-12/630A-25kA environmentally friendly gas-insulated ring main unit is a fully sealed and fully insulated ring main unit that employs advanced vacuum interrupter technology. From the design perspective, it meets environmental requirements by being oil-free and SF6-free. All conductive parts inside the switchgear are housed in a sealed stainless steel enclosure, with dry air serving as the primary insulating medium within the enclosure. The main switch uses a vacuum arc-extinguishing system, while the isolating switch features a three-position structure. The enclosure boasts an IP67 protection rating, making it immune to the effects of condensation, frost, salt spray, pollution, corrosion, ultraviolet radiation, and other similar factors.
Contact Information
Headquarters: No. 518 Guanghua Road, Songjiang District, Shanghai
Production base: No.88 Hongyang Road，Kunshan City, Jiangsu Province
Telephone:18801089589
Website:www.qianguelectric.com
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