The solid insulated ring main unit is a combination of three
technologies including external solid sealing, insulated busbar and
combined unit miniaturization. The switch and high-voltage live
parts are integrally cast with epoxy resin, and the epoxy resin is
solid-sealed as the live body to the ground. And new power
distribution equipment with phase insulation. The solid insulated
ring network cabinet does not emit any toxic substances, has no
hidden dangers of gas leakage, explosion and internal arcing, and
has the characteristics of high insulation performance, high
overall strength, and maintenance-free. The solid insulated ring
network cabinet eliminates the application of pressure vessels. The
internal insulation and arc extinguishing of the switch body adopts
a vacuum medium, and the external insulation adopts an insulating
cylinder to solidify the switch parts, and each circuit is
connected by a closed bus. The insulating cylinder adopts
solid-sealed pole technology, which organically combines the vacuum
interrupter, the main conductive circuit and the insulating support
to achieve a fully insulated, fully sealed and maintenance-free
structure. The insulating cylinder is made of epoxy resin material,
and the bus bar is encapsulated with a silicon rubber material.
This structure effectively slows down the corrosion of the power
supply body due to the isolation of air, moisture, dust, and hot
and cold air sources.
Solid insulation ring network cabinet structure
1. Completely eliminate SF6 gas in the solid insulated ring network
cabinet, use insulating sleeves to solidify the switch parts, and
block the bus to connect each circuit. Completely sealed and
insulated as a whole.
2. Using solid-sealed pole technology to organically separate the
vacuum interrupter, main conductive circuit, and insulating support
into a whole, complete a fully insulated, fully sealed,
maintenance-free structure, and complete a removable unit
structure.
3. The insulation sleeve is used for solid sealing, which can treat
the surface of the arc extinguishing chamber without being polluted
by the surrounding environment. It has greatly improved the
insulation performance, anti-fouling and anti-condensation
capabilities, and at the same time, it has improved ozone
resistance, UV resistance, and anti-aging Capacity and mechanical
strength.
4. The vacuum interrupter adopts the products of domestic famous
enterprises such as Xuguang and Zhenguang, and strictly controls
the quality of production. At the same time, in order to further
ensure the reliability of the vacuum arc extinguishing, the arc
extinguishing chamber was completely inspected before and after
pouring, and the pressure test was stopped respectively.
5. The outer layer of the vacuum interrupter is filled with vacuum
pouring, and the outside is equipped with a sealed epoxy resin,
which enhances the maintenance of the vacuum interrupter.
The core technology of solid insulated ring network cabinet
1. The bus bar in the cabinet adopts vacuum casting technology.
2. The switch components of the ring main unit adopt solid-sealed
pole technology, and epoxy resin encapsulates the main switch in a
vacuum, which greatly improves the safety of the product.
3. The superiority of the mechanism, the necessary configuration of
the vacuum switch: isolation mechanism.
4. The automated terminal and modular design make the intelligent
upgrading of the solid insulated ring network cabinet feasible and
easy to operate.