
2. This product boasts a fully-insulated and fully-submersible design, with options available in both screened and un-screened variants, offering unparalleled versatility and safety in electrical network applications.
3. Exceptionally adaptable, it can be utilized in cable branch boxes, perfectly matching with loaded switch sockets, delivering superior connectivity solutions for your network needs.
4. With a fully-insulated and completely sealed construction, this product eliminates the risk of critical defects associated with exposed high voltage, particularly in adverse weather conditions, ensuring consistent performance and safety.
5. The ring main unit is expertly composed of the crossing connector and bus-bar connector, providing a robust and efficient solution for electrical distribution.
6. Offering high reliability paired with low investment costs, this product is an ideal choice for those seeking long-term dependability and value in their electrical network infrastructure.

1. The outer surface (dotted line range) suntan pattern.
2. The insulation layer hardness is 60±5'A, color: black
3. The resistance must be ≤3000Ω.
4. Adhesive material: EPDM.
5. Rounded R1 is not marked.
6. No tolerance specified according to the tolerance table
Product Parameters | ||||
ltem | Unit | Techincal parameter | ||
Rated voltage | kV | 12/20kV | ||
System voltage | kV | 20kV | ||
Rated frequency | Hz | 50Hz | ||
Standard | GB/T 12706.4-2020 | |||
5 min power frequency withstand volatge1min | kV | 54kV no breakdown, no flashover | ||
Lightning impulse voltage | kv | 125kV | ||
Insulation Grade | Grade B | |||
Ambient temparature | ºC | -25ºC~40ºC | ||
Partial discharge test | PC | 20kv<10PC | ||
Shielding resistance | Ω | ≤5000Ω |