Quick Link
Quick Contact
Address
No. 99 Xingai Avenue, Liangjiang New Area, Chongqing, China
Tel
86--18723890577
Our Newsletter
Subscribe to our newsletter for discounts and more.
HXGN-12 Ring Switchgear: 12kV, 630A, 31.5kA breaking capacity. Compact for box substations, dual load switch options (FN12-10/FN25-12), up to 10,000 mechanical cycles. IP20 rated for reliable ring network & terminal distribution.
The HXGN-12 Box Type Fixed AC Metal Closed Ring Switchgear (commonly referred to as a ring main unit) is an elite AC high-voltage complete set of electrical equipment engineered for networks with a rated voltage of 12kV and a rated frequency of 50Hz. It plays a dominant and critical role in three-phase AC ring networks, terminal distribution networks, and industrial power equipment, providing seamless acceptance and distribution of electrical energy. Due to its optimized structure, it is exceptionally well-suited for direct mounting into box-type transformer substations.
Ring Main Unit Optimization: Explicitly engineered to manage looping and grid sectionalizing tasks in high-density industrial and urban ring distribution systems.
Compact Substation Integration: Its small footprint and tailored entry design make it perfectly suitable for seamless installation inside compact box-type transformer substations.
Dual Load Switch Compatibility: Built with adaptive engineering that flawlessly supports both FN12-10 and FN25-12 load switch parameters based on specific project load currents.
Robust Assembled Protection Matrix: Incorporates heavy-duty assembled electric configurations with a maximum rated fuse current capability of 100A and up to 31.5kA short-circuit breaking current protection.
H X G N □ - 12
H: Ring network cabinet
X: Box type
G: Fixed type
N: Indoor
□: Design number
12: Rated voltage kV
Altitude Baseline: Performance optimized and rated for operational environments of 1000m and below.
Ambient Temperature Limits: Operating envelope ranges from a minimum ambient temperature of -25°C to a maximum of +40°C.
Relative Atmospheric Humidity: Daily average relative humidity value must not exceed 95%; monthly average relative humidity value must not exceed 90%.
Operational Safety Boundaries: The installation zone must feature no active fire risks, explosion hazards, severe environmental filth, chemical corrosion, or violent structural vibration.
Atmospheric Purity: The surrounding air must remain clear and free from corrosive gases, flammable vapors, thick water vapor, conductive dust particles, and other obvious forms of contamination.
| Technical Parameter / Item | Unit | Parameter Configuration: FN12-10 / FN25-12 |
|---|---|---|
| Rated Voltage | kV | 12 |
| 1-min Power Frequency Withstand Voltage | kV | Ground and phase: 42; disconnect: 48 |
| Lightning Impulse Withstand Voltage | kV | Ground and phase: 75; disconnect: 85 |
| Rated Frequency | Hz | 50 |
| Rated Current of Main Busbar | A | 630 |
| Load Switch - Rated Current | A | 630 |
| Load Switch - Electrical Life at Rated Current | Times | Not less than 100 |
| Load Switch - Open No-load Transformer Capacity | kVA | 1250 |
| Load Switch - Rated Thermal Stability Current | kA/s | 20/4; earth switch 20/2 |
| Load Switch - Rated Dynamic Stability Current (Peak) | kA | 50 |
| Load Switch - Rated Short-circuit Closing Current (Peak) | kA | 50 |
| Assembled Electric - Rated Fuse Current | A | 100 |
| Assembled Electric - Rated Transfer Current | A | FN12-10: 1500 / FN25-12: 2000 |
| Assembled Electric - Rated Short-circuit Breaking Current | kA | 31.5 |
| Assembled Electric - Matching Fuse Type | - | S□LAJ-12 (XRNT□-10) |
| Mechanical Life | Times | FN12-10: 2000 / FN25-12: 10000 |
| Auxiliary Circuit 1-min Power Freq. Withstand Voltage | kV | 2 |
| Electric Actuator Working Voltage | V | AC/DC 220 / 110 |
| Protection Grade | - | IP20 |
| Dimension (W * D * H) | mm | 650(850) * 900 * 2000(2200) |
Tailored Ring Main Unit Engineering: Engineered precisely to address complex looping, grid configuration, and terminal distribution tasks inside high-load three-phase AC grids.
Pre-fabricated Substation Fit: The space-saving, low-profile mechanical architecture is meticulously customized for seamless structural integration into indoor compact transformer substations.
Dynamic Switch Adaptability: Features verified support for dual technical parameters (FN12-10 and FN25-12 switches), allowing clients to select tailored mechanical lifespans up to 10,000 cycles.
Absolute High-Voltage Grid Isolation: Fully compliant with global standard requirements, combining an IP20 shell envelope with robust fuse matching to guarantee instantaneous suppression of short-circuit energy up to 31.5kA.