Product Overview
35kV indoor AC metal-clad withdrawable switchgear is an indoor high-voltage complete power distribution equipment. It is suitable for three-phase AC 50Hz, 24kV/35kV single busbar and sectionalized single busbar power systems. It is widely applied in power plants, substations, industrial and mining enterprises, high-rise buildings, data centers, petrochemical, metallurgy and other high-voltage power distribution places. It is mainly used for power reception, distribution, control, protection and monitoring, and is applicable to various working conditions such as high-voltage motor startup and reactive power compensation.
The product adopts a metal armored, middle-mounted drawout structure, with high-quality components selected for core parts. It has the advantages of complete five-prevention interlocking, safe isolation, strong interchangeability, convenient maintenance, reliable operation and outstanding short-circuit resistance. It complies with national and industrial 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, meeting the strict requirements of high-voltage power distribution systems.
Operating Environment
1. Ambient temperature: -15℃～+40℃, 24h average temperature ≤+35℃
2. Indoor installation, altitude ≤1000m (can be customized to 2500m for special working conditions)
3. Relative humidity: daily average ≤95%, monthly average ≤90%, anti-condensation measures are required
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, chemical corrosion and salt spray erosion, no severe vibration and impact
Technical Parameters
Item | Unit | Parameter |
Rated voltage | kV | 24/35 |
Rated insulation voltage | kV | 40.5 |
Rated frequency | Hz | 50 |
Main busbar rated current | A | 630/1250/1600/2000/2500/3150 |
Rated short-time withstand current (4s) | kA | 20/25/31.5/40/50 |
Rated peak withstand current | kA | 50/63/80/100/125 |
1min power-frequency withstand voltage | kV | Phase-to-phase/earth 95; breaking port 110 |
Lightning impulse withstand voltage | kV | Phase-to-phase/earth 185; breaking port 215 |
Protection class | — | Outer casing IP4X, compartment interior IP2X |
Overall dimensions (W×D×H) | mm | 1200/1400×1800/2000×2600/2800 |
Executive standard | — | GB/T 3906, GB/T 11022, IEC 62271-200, DL/T 404 |
Product Features
1. Armored middle-mounted structure with high safety level: Full metal armored enclosed design, circuit breaker trolley adopts middle-mounted layout, which can be quickly moved for maintenance, and each functional unit does not interfere with each other, effectively ensuring the continuous power supply of the high-voltage power distribution system.
2. Complete five-prevention interlocking to eliminate misoperation: Strictly following the five-prevention design specifications, it has the functions of preventing mis-closing/opening of circuit breakers, preventing push-pull of trolleys under load, preventing closing of earthing switches with electricity, preventing power transmission when earthing switches are closed, and preventing entry into live compartments, comprehensively ensuring personal and equipment safety.
3. Independent compartment design with strong fault controllability: The cabinet is divided into busbar room, circuit breaker room, cable room, instrument room and relay room. Each compartment is independently isolated and equipped with a special pressure relief channel, which can effectively suppress arc spread and reduce the risk of fault expansion.
4. Strong interchangeability and convenient maintenance: Circuit breaker trolleys and isolation trolleys of the same specification are universally interchangeable, supporting door-closed operation and front maintenance, and compatible with wall-mounted and back-to-back installation, greatly improving construction and maintenance efficiency.
5. Excellent dynamic and thermal stability, adapting to high-voltage working conditions: Optimized busbar copper bar layout and cabinet structure strength, selected high-strength conductive materials, with low temperature rise and strong short-circuit resistance, which can stably adapt to 35kV high-voltage and large-current operation conditions for a long time.
6. Anti-corrosion, durable and long service life: The cabinet is made of high-quality aluminum-zinc coated plate or cold-rolled steel plate, processed by CNC precision machining, phosphating treatment and electrostatic spraying process, with high strength, oxidation resistance, corrosion resistance and anti-aging characteristics, adapting to various complex high-voltage power distribution environments.
Our Advantages
1. Quick quotation response, providing professional primary/secondary electrical design, system scheme optimization and technical consulting services.
2. Standardized production line operation, short delivery cycle, supporting urgent orders, and can customize special specifications according to customer needs.
3. Improved after-sales service system, providing on-site installation guidance, commissioning, operation training and lifelong maintenance services, with full-process worry-free experience.
4. Complete full-series certifications, with authoritative certifications such as CCC, ISO and type test reports, ensuring quality assurance.
5. Strict quality management system, full-process control from raw material procurement, production and processing to finished product inspection, ensuring stable product performance.
Ordering Guide
The following information shall be provided when placing an order:
1. Main circuit system diagram, secondary schematic diagram, wiring diagram and control logic requirements.
2. Cabinet layout drawing, power distribution room plan and section layout drawing.
3. Incoming and outgoing line methods (cable/overhead), busbar connection requirements, cabinet installation spacing and fixing methods.
4. Key parameters such as model, rated current and short-circuit breaking current of core components such as circuit breakers and isolating switches.
5. Special environments (high altitude, anti-corrosion, explosion-proof, anti-salt spray, etc.) and special functional requirements shall be explained and negotiated in advance.
