High Voltage Switchgear
HXGN-12 Fixed-Type Metal-Clad Ring Main Switchgear (RMU)
Product Overview
HXGN-12 Fixed-type metal-clad ring main switchgear (RMU) is suitable for AC 50Hz, 12kV power systems. Widely used in industrial and civilian cable ring and power supply terminals. Especially suitable for small secondary substations, switch stations, urban residential area power distribution, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, hospitals, sports venues, railways and other places.
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Product Features
- SF6 Ring Main Unit (RMU): Easy to combine and expand, compact, safe, and reliable.
- SF6 Insulation & Arc Quenching: Using SF6 gas as insulation and arc-quenching medium, the constant magnetic field rotating arc quenching method ensures arc-extinguishing capability is independent of arc current, featuring excellent breaking performance, low overvoltage, long electrical life, and maintenance-free arc chamber.
- Three-position Functionality: Equipped with a miniaturized pressure gauge for multi-functional operation.
- Simple Operation: Reliable operating mechanism and interlocking system for easy operation.
- Zero Gauge Pressure Certification: Passed rated breaking tests at zero SF6 gauge pressure, ensuring high functional margin and reliability.
- Ground Switch Capability: Ground switch meets national standards for short-circuit making and breaking capacity.
- Cabinet Structure: Made of imported aluminum-zinc coated steel plates, stamped and assembled for high rigidity and deformation resistance.
Product Details & Applications
Operating Conditions
- Altitude: ≤1000m
- Ambient temperature: -35°C to +45°C, maximum daily average temperature difference ≤25°C
- Relative humidity: Daily average ≤95%, monthly average ≤90%
- Seismic resistance: Seismic intensity 8
- Environmental requirements: Free from severe vibration, shock, fire hazards, chemical corrosion, or explosive risks. Note: For orders exceeding the above conditions, please consult our company for customization.
Technical Specifications
| No. | Items | Unit | FN12-12 | FZN25-12 | |
|---|---|---|---|---|---|
| 1 | Rated voltage | 12 | |||
| 2 | 1min Power frequency withstand voltage | kV | Phase-to-ground & phase-to-phase: 42kV; Isolating break: 48kV | ||
| 3 | Lightning impulse voltage(Peak) | kV | Phase-to-ground & phase-to-phase: 75kV (peak); Isolating break: 85kV (peak) | ||
| 4 | Rated frequency | Hz | 50 | ||
| 5 | Load switch | Rated current | A | 630 | |
| 6 | Load switch | Breaking capacity of no-load transformer | kVA | 1250 | |
| 7 | Load switch | Rated thermal stable current | kA/S | 20/4;Earthing switch20/2 | |
| 8 | Load switch | Rated dynamic stable current(Peak) | k | 50 | |
| 9 | Load switch | Rated short-circuit making current(Peak) | k | 50 | |
| 10 | Load switch | Fuse rated current | A | 125 | |
| 11 | Combined electrical equipments | Rated transfer current | A | 870 | |
| 12 | Combined electrical equipments | Rated short-circuit breaking current | k | 20 | |
| 13 | Combined electrical equipments | Matching fuse model | S£LAJ-12 | ||
| 14 | Mechanical life | Times | 2000 | 10000 | |
| 15 | Auxiliary circuit1minPower frequency withstand voltage | kV | 2 | ||
| 16 | Working voltage of electric actuator | V | AC/DC 220/110 | ||
| 17 | Protection level | IP2X |
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