The intelligent switchgear station (outdoor ring main unit) adopts and incorporates advanced technologies from abroad. It integrates 12/24KV switch cabinets, circuit breakers, load switches, current and voltage transformers, 12/24KV power PT, switchgear FTU, RTU, communication control terminal (CCU), 12/24kV metering and automatic meter reading, USP power supply and indicating instruments, etc., and installs and debugs them all into a movable, sealed and moisture-proof stainless steel box. This enables the integration of primary and secondary systems in urban distribution networks, modularization of assembly, shortens the construction period, and significantly improves the reliability of urban power grid operation. 

Functional Features
The product adopts prefabricated live-touchable silicone rubber cable heads, which are fully sealed, fully insulated, and maintenance-free, ensuring the safety of personnel:
The structure is compact, the appearance is small and beautiful, with a double-layer stainless steel box, and the service life can reach more than twenty years:
Without affecting the operation of the main power grid, it realizes regional power outage maintenance, reducing the power outage area;
One or more SF6 load switches can be equipped. The wiring method is flexible and diverse, and the maximum number of branch lines can reach 8 circuits; options include lightning arresters, short-circuit fault indicators, and current-limiting fuses, meeting various requirements of users. 

Operating environmental conditions
Altitude: < 1000m;
Maximum ambient temperature: +40°C;
Minimum ambient temperature: -25°C;
Daily temperature difference: 25K;
Air relative humidity: Daily average not exceeding 95%, monthly average not exceeding 90%.
The installation location has no severe vibration, and the seismic intensity does not exceed 8 degrees.
<The installation site should have no gases, vapors, chemical deposits, dust, dirt, other explosive and corrosive media that seriously affect the insulation of the load switch;
Used in non-grounded systems and 10kV systems that are grounded through a small resistance or through an arc suppression coil.
When the above operating environmental conditions cannot meet the usage requirements, the user and the manufacturer should negotiate. 

Common cable connectors
They are made by fully automatic injection of imported high-quality insulating rubber. Both the inner and outer layers are semiconductor shielding layers. The inner layer is used to balance the internal electric field, and the outer shielding layer is grounded to protect the zero potential of the cable head surface. The inner layer at the lower end of the stress cone is in close contact with the semiconductor layer of the cable, and the outer semiconductor layer is also in close contact with the outer semiconductor layer of the cable head and is grounded through the grounding hole of the cable head. This not only solves the problem of electric field concentration at the cut-off point of the external shielding layer of the cable, but also uses the external shielding layer of the cable to maintain zero potential, ensuring personal safety.
The touchable cable rear connector is installed on the touchable cable front connector through the connection head, and its rear end can be connected to another rear connector through the connection head to form multiple outgoing lines. It can also be connected to a lightning arrester to provide overvoltage protection for the power grid.