Product Overview:
The XGN15 high voltage air insulated SF6 Ring Main Unit (RMU) is designed for use in medium voltage electrical distribution systems. It provides reliable and efficient protection, control, and distribution of electrical power. This RMU is ideal for applications in urban and industrial power grids, ensuring the safety and stability of the electrical network.
Structural Features:
Installation Method:
Applicable Environmental Conditions:

| Content | Unit | Value | |||
| Rated Voltage | kv | 12 | 24 | 36 | |
| Rated Frequency | Hz | 50/60 | |||
| Rated Current | A | 630 | |||
| Max. rated Current of Fuse | A | 125 | |||
| Rated Short-circuit Breaking Current | kA | 31.5(Fuse Group) | |||
| Rated Peak Withstand Current | kA | 50 | |||
| Rated Short-time Withstand Current(4s) | kA | 20 | |||
| Rated Short Circuit Making Current | kA | 50 | |||
| Grounding Loop
|
Rated Short-time Withstand Current(2s) | kA | 20 | ||
| Rated Peak Withstand Current | kA | 50 | |||
| Power Frequency Withstand Voltage in 1 min
|
Phase.Earthed | kv | 42 | 52 | 80 |
| Isolating Fracture | kV | 48 | 58 | 85 | |
| Lightning Impulse Withstand Voltage(Peak)
|
Phase.Earthed | kV | 75 | 110 | 170 |
| lsolating Fracture | kV | 85 | 120 | 180 | |
| Rated Active Load Breaking Current | A | 630 | |||
| Rated Closed Loop Breaking Current | A | 630 | |||
| Rated Cable-charging Breaking Current | A | 10 | |||
| Rated Transfer Current | A | 1750 | |||
| SF6 Gas Pressure(Relative Pressure at 20℃) | MPa | 0.045 | |||
| Internal Arc Duration Test(0.5s) | kA | 31.5 | |||
| Mechanical Life
|
Load Switch | Times | 5000 | ||
| Earth Switch | Times | 2000 | |||
| Degrees of Protection | IP | IP4X | |||
| Operation Mode | - | Manual/Electric | |||
The XGN15 type AC high-voltage sulfur hexafluoride ring switchgear is a robust and reliable solution for power distribution systems, widely implemented across various sectors including industrial and mining enterprises, high-rise buildings, residential communities, and educational institutions. Its compact design allows for efficient space utilization in urban environments, while its high-voltage capacity and use of SF6 as an insulating medium ensure it can handle the demands of heavy-duty power distribution. The ring switchgear plays a critical role in maintaining a stable and secure power supply, facilitating both ring grid power supply and terminal distribution. Its safety features protect against electrical faults, and its design ensures operational safety and ease of maintenance. Furthermore, the ring switchgear’s compatibility with existing infrastructure allows for seamless integration into a variety of electrical systems, contributing to the overall resilience and efficiency of power distribution networks.



1.Packing list
2.Qualification certificate and routine test report
3.Operation manual
4.Electric drawings
5.Manualfor main components
6.Keys for switchgear doors, operating handle and spare parts specified in contract.
The RMU is designed to operate in environments with an altitude up to 1000 meters, ambient temperatures ranging from -5 to +40 degrees Celsius, and relative humidity with daily and monthly averages not exceeding certain limits. It is also suitable for areas with seismic intensity up to 8 and free from intense vibrations, chemical corrosion, and explosive hazards.
The XGN15 RMU is a compact and flexible switchgear that incorporates air insulation and uses SF6 as the main switching medium. It is equipped with multiple interlocks and can be integrated with various components like electric actuators, potential transformers (PTs), current transformers (CTs), uninterruptible power supplies (UPS), and fault testing units (FTU) for use in automated distribution network systems.