Product Overview
The 12kV indoor AC metal-clad withdrawable switchgear is an indoor high-voltage complete power distribution device. It is suitable for three-phase AC 50Hz, 3.6kV/7.2kV/12kV single busbar and sectionalized single busbar power systems. It is widely used in power plants, substations, industrial and mining enterprises, high-rise buildings, data centers, petrochemical, metallurgy and other places. It is used for power reception and distribution, and realizes functions such as circuit control, protection, monitoring and high-voltage motor starting.
The product adopts a metal armored, middle-mounted drawout structure, with advantages such as five-prevention interlocking, safe isolation, strong interchangeability, convenient maintenance and reliable operation. It complies with standards such as GB/T 3906, GB/T 11022, IEC 62271-200 and DL/T 404, and has passed type test and CCC certification, with stable performance and safe use.
Operating Environment
1. Ambient temperature: -15℃～+40℃, 24h average temperature ≤+35℃
2. Indoor installation, altitude ≤1000m (can be customized to 2500m for special cases)
3. Relative humidity: daily average ≤95%, monthly average ≤90%, the impact of condensation needs to be considered
4. Seismic intensity: no more than 8 degrees
5. Installation inclination: inclination with the vertical plane ≤5°
6. Installation site: no fire and explosion hazards, no severe pollution and chemical corrosion, no severe vibration and impact
Technical Parameters
Item | Unit | Parameter |
Rated voltage | kV | 3.6/7.2/12 |
Rated insulation voltage | kV | 12 |
Rated frequency | Hz | 50 |
Main busbar rated current | A | 630/1250/1600/2000/2500/3150/4000 |
Rated short-time withstand current (4s) | kA | 16/20/25/31.5/40/50 |
Rated peak withstand current | kA | 40/50/63/80/100/125 |
1min power-frequency withstand voltage | kV | Phase-to-phase/earth 42; breaking port 48 |
Lightning impulse withstand voltage | kV | Phase-to-phase/earth 75; breaking port 85 |
Protection class | — | Outer casing IP4X, compartment interior IP2X |
Overall dimensions (W×D×H) | mm | 800/1000×1500/1650×2200/2300 |
Executive standard | — | GB/T 3906, GB/T 11022, IEC 62271-200, DL/T 404 |
Product Features
1. Armored middle-mounted structure, safe and reliable: Full metal armored enclosure, circuit breaker trolley is middle-mounted, which can be quickly removed for maintenance without mutual interference, ensuring continuous power supply.
2. Complete five-prevention interlocking, eliminating misoperation: It has five anti-misoperation functions, including preventing mis-closing/opening of circuit breakers, preventing push-pull under load, preventing closing of earthing switch with electricity, preventing power transmission when earthing switch is closed, and preventing entry into live compartments, ensuring personal and equipment safety.
3. Independent compartment design, controllable fault: The cabinet is divided into busbar room, circuit breaker room, cable room and instrument room, which are independently isolated and equipped with pressure relief channels, effectively suppressing arc spread.
4. Strong interchangeability, convenient maintenance: Trolleys of the same specification are universally interchangeable, supporting door-closed operation and front maintenance, and compatible with wall-mounted/back-to-back installation for efficient construction.
5. Excellent dynamic and thermal stability: Optimized copper bar and cabinet strength, low temperature rise, strong short-circuit resistance, adapting to high current and high short-circuit working conditions.
6. Anti-corrosion, durable and high precision: Adopting aluminum-zinc coated plate/high-quality cold-rolled steel plate, processed by CNC machining, phosphating and electrostatic spraying, with high strength, oxidation resistance, corrosion resistance and long service life.
Our Advantages
1. Quick quotation, providing primary/secondary electrical design and system solutions
2. Standardized production, short delivery cycle, supporting urgent orders
3. Comprehensive after-sales service, providing installation guidance, commissioning, training and lifelong maintenance
4. Complete series of certifications: CCC, ISO and type test reports are complete
5. Strict quality inspection, full-process control from raw materials to finished products, stable quality
Ordering Guide
The following documents shall be provided when placing an order:
1. Main circuit system diagram, secondary schematic diagram and wiring diagram
2. Cabinet layout drawing, power distribution room plan and section layout
3. Inlet and outlet mode (cable/overhead), busbar connection requirements and installation spacing
4. Key parameters such as circuit breaker model, rated current and short-circuit breaking current
5. Special environments (high altitude, anti-corrosion, explosion-proof, etc.) shall be explained and negotiated in advance
