Intelligent Outdoor inflatable Ring Main Unit

overview
The intelligent outdoor inflatable ring main unit uses the vacuum switch as the
switchgear, SF6 gas box-type insulation, compact structure, small occupied space,
beautiful appearance, and coordinating and cooperating with the surrounding. As RVAC
ring main unit uses the concept of fully sealing and insulation, all switch parts in it as well
as the high-voltage electrified body and structure part are sealed in the main cabinet
fully, they will not be affected by the frost and dew, external polluted environment; the
protection level of main cabinet can reach IP67, and it is equipped with Cooper
waterproof cable head which can be touched to defend against the accidental flood in
the rainy area efficiently.
Structure features
Use vacuum breaking for arc extinction with long electrical life
Use the load switch, load switch + fuse and circuit breaker for protection
Fully insulated and sealed structure, safe and reliable, anti-flooding, anti-pollution,
free of maintenance
Small size, compact structure, simple installation, and convenient operation
The box uses the anti-corrosion design and special painting treatment, and is
applied to a variety of harsh environments, such as storm and area with high pollution.
The fully sealed operation mechanism is not affected by the external environment,
and can be operating reliably fora long time.
It can be equipped with the electric and remote control equipment to realize power
distribution automation.
Technical parameters table
Nominal voltage kV1212 Rated current A 630 630
Power frequency withstand voltage within 1 minute kV 42 42
Lightning impulse withstand voltage (BIL) kV 95 95
Direct current withstand voltage within 15 minutes kV 53 53
Power frequency withstand voltage within 1 minute under zero voltage kV 38 38
Power frequency withstand voltage of the second circuit (within 1 minute) V 2000
2000 Power supply voltage for electric operating V DC24 Dc24
Breaking current under rated load A 630
Charging breaking current under rated cableA10 25
Breaking current under rated short circuit kA 20
Making current under rated short circuit kA 50 50
Withstand current for 3 seconds under rated short circuit kA 20 20
Withstand current under rated peak kA 50 50 Mechanical life/time 10,000 10,000
SF6 gas rated pressure (20T) Mpa 0.035 0.035
Annual leakage rate of SF6 gas % <0.1 <0.1
Operating conditions
1 .Ambient temperature: upper limit +55T, lower limit -30^;
2. Elevation less than 3000 m;
3. Seismic intensity less than 8 degrees;
4. Relative humidity: daily average humidity less than 95%, and monthly
average humidity less than 90%;
5. There are no fire and explosion hazards, and there are no areas which
are polluted seriously, corroded with chemicals and shake violently.