Siemens 8DJH adopts sulfur hexafluoride gas insulation/clean air insulation, metal enclosure, and is completely unaffected by any environmental climate. Cooperate with our company to authorize distributors. The core of Siemens 8DJH ring main unit is a stainless steel gas chamber welded by laser. All insulation sleeves used for electrical and mechanical connections in the Siemens 8DJH ring main unit are airtightly welded to the gas chamber, without using any form of sealing ring or plastic sealing device, fully ensuring the airtightness of the entire gas chamber. The ring main unit adopts a pressure indicator device with temperature compensation function, which is completely unaffected by environmental climate. The ring main unit adopts a single blade three position load switch, which mechanically eliminates the possibility of the load switch being grounded while in the closed state. The load switch of the ring main unit adopts a manual spring operating mechanism, and the metal corrugated pipe welded to the gas box in an airtight manner serves as a dynamic seal to transmit the working force. Through up and down operation, the operating force is small.

The Siemens 8DJH ring main unit has a complete mechanical locking system: the cable room door cannot be opened under live conditions, and cannot be closed when the cable room door is open.

The load switch operation hole on the Siemens 8DJH ring main unit panel has a toggle selection device to select the correct operation needs, and can be padlocked to lock each position separately, avoiding misoperation as much as possible. The load switch of the ring main unit is a rotary type, with dual port arc-quenching capability, and adopts a fast grounding switch. Siemens 8DJH ring main unit is maintenance free for life, with a service life of up to 30 years.

At present, it is widely used in substations, user substations, power systems, and distribution stations for public facilities, as well as switch stations, wind power stations, high-rise buildings, airports, open-pit coal mines, subway stations, sewage treatment plants, port facilities, traction power supply systems, automotive industry, petroleum industry, chemical industry, and cement industry.

1) Height 1200mm, 1700mm optional

2) The protection level of the shell is IP4X, which is optional

3) When there are no secondary devices, the allowable temperature range for the environment is -40 ℃ to 70 ℃