Overview
The XGN15-12 box-type fixed AC metal-enclosed switchgear (hereinafter referred to as the ring main unit) is a high-voltage electrical product that we designed and developed ourselves after introducing advanced foreign technology and following the domestic rural electricity and urban network renovation requirements. All technical performance indicators fully comply with IEC62271-200:2003 and GB3906 standards.
The main switch, operating mechanism, and components of the ring main unit use original ABB parts or SFL-12/24 switchgear assembled domestically with imported components. It can also be equipped with ABB's original HAD/US type SF6 circuit breaker or VD4-S type vacuum circuit breaker according to user needs. It has both manual and electric operation modes.
The cabinet is processed with CNC machines and then riveted together, achieving a protection level of IP3X and providing reliable mechanical interlock and anti-misoperation features. This product is characterized by a small size, light weight, attractive appearance, easy operation, long lifespan, high parameters, no pollution, and low maintenance.
The XGN15-12 box-type fixed AC metal-enclosed switchgear is suitable for 50Hz, 12kV power networks for receiving and distributing electrical energy. The main switch inside the cabinet is an SF6 switch.
Model Meaning
Main Technical Parameters of the Vacuum Circuit Breaker
| No. | Name | Unit | Value |
| 1 | Rated Voltage | kV | 12 |
| 2 | Rated Frequency | Hz | 50 |
| 3 | Rated Current of Main Busbar / Maximum Rated Current of Fuse | A | 630, 125 |
| 4 | Rated Short-time Withstand Current for Main Circuit and Earthing Circuit | kA/s | 20, 3 |
| 5 | Rated Peak Withstand Current for Main Circuit and Earthing Circuit | kA | 50 |
| 6 | Rated Short-circuit Making Current for Main Circuit and Earthing Circuit | kA | 50 |
| 7 | Full Capacity Breaking Times of Load Switch | times | 100 |
| 8 | Fuse Breaking Current | kA | 31.5, 40 |
| 9 | Rated Closed-loop Breaking Current | A | 630 |
| 10 | Rated Transfer Current | A | 1600 |
| 11 | Mechanical Life | times | 2000 |
| 12 | 1min Power Frequency Withstand Voltage (peak value) Phase-to-phase, Phase-to-earth / Isolating Break | kV | 42, 48 |
| 13 | Lightning Impulse Withstand Voltage (peak value) Phase-to-phase, Phase-to-earth / Isolating Break | kV | 75, 85 |
| 14 | 1min Power Frequency Withstand Voltage for Secondary Circuit | kV | 2 |
| 15 | Protection Class | - | IP3X |