Environmental Protection Gas Insulated Ring Main Unit

● Product features

▶ Wide application range: Environmental Protection Gas Insulated Ring Main Unit do not use any toxic and harmful gas , which determines the safety of the use environment. Whether it is in the basement, in the tunnel, on the ship, or in various environments inside and outside. The interior of the high-pressure warehouse can be filled with dry air or nitrogen, which is suitable for the safe use under harsh conditions, such as high altitude, strong sandstorm, low temperature, severe cold, high environmental protection requirements, frequent operation places, safe explosion-proof places, high salt fog and condensation. Fully insulated and fully enclosed, it is suitable for the equipment to continue running after taking some cleaning and drying measures after a short period of water inflow.

▶ Maintenance-free: HXGN(H)□-12 type Environmental Protection Gas Insulated Ring Main Unit is in a completely sealed state except for the high-voltage switch part of the operating mechanism, so that cleaning and maintenance can be avoided and the cost of operation and maintenance can be reduced. The switch cabinet has a high degree of automation, and the online detection function will inform the user of the operation of the equipment in real time. It is more conducive to the automation of distribution network. Reduce manual operation cost and production cost of electric power enterprises.

▶ High safety: perfect interlocking system, three-phase isolation fracture is clearly visible, avoiding misoperation accidents. Cancelled SF. Application of gas. Strengthen the interphase isolation structure to avoid interphase or multi-loop short circuit to expand or cause explosion accidents. The vacuum interrupter with explosion-proof and environmental protection gas cabinet vacuum energy is adopted, and the solid sealing pole has further protective performance for the switch.

▶ Ease of operation: the disconnector grounding switch has only one operating handle, so there is no need to identify and worry about mistakes. When the circuit breaker is running, the operating handle of the disconnector grounding switch can not be operated, and there is no need for complicated technical training, which makes the operation extremely simple, and prevents the operation error. The solid sealing pole is formed by epoxy resin APG process, which has excellent electrical and mechanical properties

▶ The solid sealing pole is the key part of the switch, which is both an insulating part and a bearing part. At the same time, it meets the technical requirements of heat resistance, cold resistance, cracking resistance, high mechanical strength and good insulation strength.

▶ The single cabinet structure adopts the general insulated bus and cable plug produced by professional cable accessory manufacturers. The switchgear can be assembled on site and expanded at will, which avoids the inconvenience of transportation and installation caused by multiple groups of cabinets. Of course, combined cabinets can also be provided upon request.

▶ Clearly visible real isolation fracture.

▶ The whole series of products are designed in a unified way, providing a variety of cabinet types (circuit breaker, load switch, PT, bus bar, bus bar, etc.) required by users, and the geometric dimensions are completely consistent.

▶ The switch cabinet has intelligent interfaces and sensor installation positions, which can meet the requirements of smart grid after being equipped with intelligent equipment.

▶ The main bus adopts standard silicone rubber dry bus.

▶ The disconnector adopts three-station disconnector, which is installed on the bus side.

▶ The excellent performance of the Environmental Protection Gas Insulated Ring Main Unit

determines that it can completely replace SF6 load switch ring network cabinet.

● Conditions of use

◆ Temperature ：-25~45℃

◆ Max daily temperature: 35℃

◆ IP degree：Charged body seal IP67, switch cabinet shell IP4x

◆The surrounding air of Environmental Protection Gas Insulated Ring Main Unit should not be obviously polluted by corrosive combustible gas and water vapor.

◆There is no frequent violent vibration place, and the harshness design under harsh parts meets various requirements.

● Cabinet structure

◆ Configuration scheme 1 of Environmental Protection Gas Insulated Ring Main Unit

◆ Configuration scheme 2 of Environmental Protection Gas Insulated Ring Main Unit

◆ Typical scheme combination 1 of Environmental Protection Gas Insulated Ring Main Unit

Note：The above typical reference schemes can be combined in various ways according to the needs of users.

Typical scheme combination 2 of Environmental Protection Gas Insulated Ring Main Unit

Note：The above typical reference schemes can be combined in various ways according to the needs of users.

● Switch operating instructions

◆ Switch position state and interlock

◆ Operating steps

Power transmission ：Hang (close) the upper and lower doors with a circuit breaker (load switch) → the grounding switch with an isolating switch → the circuit breaker (load switch) with a power transmission is completed.

Power cut ：Breaker (load switch) → disconnector → earthing switch → breaker (load switch) is unloaded (opened) and the door is blacked out.

◆ Installation instructions