Product Introduction
The ring main unit assembles several functional units and connecting busbars in the same dry air sealed air box, without exposed live parts. It has the advantages of full insulation, full sealing, maintenance free live parts, small volume, compact structure, and easy operation. The air box is made of 3.0mm thick stainless steel plate, which can effectively prevent rust caused by moisture and salt spray; The product has passed the breaking and closing tests, dynamic thermal stability tests, zero gauge pressure tests, internal combustion arc tests, sealing tests, mechanical tests, electromagnetic compatibility tests, etc., to maximize personal and equipment safety. This cabinet is not affected by external environments and has extremely high resistance to harsh environments.
Application environmental conditions
Environmental temperature: -30 ℃~+55 ℃ (extreme low temperature can reach -40 ℃)
Relative humidity: daily average ≤ 95%, monthly average ≤ 90%
Altitude: ≤ 2000 meters
Earthquake intensity: 8 degrees
Compliant with standards
GB3804 3.6kV~40.5kV high-voltage AC load switch
GB3906 3.6kV~40.5kV AC Metal Enclosed Switchgear and Control Equipment
GB/T11022 Common technical requirements for high-voltage switchgear and control equipment standards
GB1984 High Voltage AC Circuit Breakers
GB1985 High Voltage AC Isolation and Grounding Switches
DL/T404 3.6 kV~40.5 kV AC Metal Enclosed Switchgear and Control Equipment
DL/T402 Technical Conditions for Ordering High Voltage AC Circuit Breakers
DL/T486 High Voltage AC Isolation Switch and Grounding Switch
DL/T593 Common technical conditions for high-voltage switchgear and control equipment standards
DL/T728-2000 Technical Guidelines for Ordering Gas Insulated Metal Enclosed Switchgear