Low-Voltage Distribution Cabinet Series
GCS Low-Voltage Drawout Switchgear
Keywords:
Technical Performance
Technical Specification
• System: Three-phase AC, 50/60 Hz; rated operating voltage 380 V (400 V) / 660 V (690 V); rated current ≤ 4000 A (up to 6300 A); single- or three-phase, four-wire or five-wire system.
• Applications: Power plants, petrochemical facilities, metallurgical plants, high-rise buildings, airports, schools, and other settings; used for power reception, power distribution, motor control, and reactive power compensation.
• Standards: IEC 61439-1/2, GB 7251, JB/T 9661.
• Altitude: ≤2000 m (derating required at higher altitudes).
• Temperature: -5℃ to +40℃, with a 24-hour average ≤35℃.
• Humidity: ≤50% at 40°C; ≤90% at 20°C (no condensation).
• Environment: No explosive atmospheres, no severe vibrations, no corrosive gases; tilt angle ≤ 5°.
Performance Features
• Modular frame: 8MF open‑section steel, 20 mm modular hole pitch, galvanized/aluminum‑zinc coated sheet, offering high rigidity and excellent corrosion resistance.
• Three-compartment isolation: The busbar compartment, cable compartment, and functional unit compartment are separated by metal partitions, preventing fault propagation.
• Five positions of the drawer: connect, test, isolate, withdraw, and maintenance; with mechanical positioning and clear labeling.
• Interlocking (Five Protections):
▲ Drawer with load‑bearing pull‑out and insertion protection
▲ Anti-misoperation circuit breaker
▲ Prevent energized closing of the grounding switch
▲ Preventing Accidental Entry into Energized Compartments
▲ Preventing Grounded Power Supply
• Safety Design: Main circuit disconnects first, auxiliary circuit disconnects later; emergency release; independent grounding protection.
• Comprehensive specifications: available in 1/2, 1, 3/2, 2, and 3‑pole configurations, covering circuits up to **≤400A**.
• High interchangeability: Drawers of the same specification are 100% interchangeable, enabling rapid replacement in case of failure.
• High density: Each cabinet can accommodate up to 22 half‑unit modules, making it ideal for motor group control.
• Numerous secondary terminals: ≥32 pairs per unit, ≥20 pairs per 1/2 unit; compatible with DCS/PLC.
• High dynamic thermal stability: The horizontal main busbar exhibits strong resistance to short-circuit electromagnetic forces and can withstand a short-circuit current of 80 kA.
• Thermal optimization: With the vertical busbar positioned at the rear and a well‑designed airflow path, heat dissipation is approximately 15% higher than that of the MNS.
• Low transition temperature rise: Large‑cross‑section transition connectors reduce heat generation and enhance current‑carrying capacity.
• Maintenance without power interruption: Single-circuit maintenance does not affect the busbar, ensuring high continuity.
• Double-sided maintenance: front access for operation, rear wiring; cable entry and exit from top and bottom, offering flexible installation.
• Rich portfolio: 198 standard solutions, compatible with power distribution, motor control, and reactive power compensation.
• Applicable scenarios: power plants, petrochemical facilities, metallurgical plants, high-rise buildings, data centers, and other environments requiring high reliability and automation.
• Safe and reliable: isolation, interlocking, and arc‑resistance ensure controllable risks.
• Efficient maintenance: drawer‑to‑drawer replacement and live‑line servicing, with minimal downtime.
• Superior performance: high thermal and electrical stability, excellent heat dissipation, and low temperature rise.
• Flexible Economy: Numerous solutions, high density, space-efficient, and excellent cost-effectiveness.
Precautions
Please inquire.
Warranty period
Please inquire.
Details and Specifications
Rated voltage of the main circuit (V) | AC 380 (440), (600) | |
Rated voltage of the auxiliary circuit | AC 200, 380 (440), DC 110, 220 | |
Rated frequency | 50(60) | |
Rated Insulation Voltage | 660(1000) | |
Rated current | Horizontal busbar | ≤4000(6300) |
Vertical busbar | 1000 | |
Busbar rated short-time withstand current | 50.80 | |
Busbar rated peak withstand current | 105,176 | |
Power-frequency test voltage | Main circuit | 2500 |
Auxiliary circuit | 2000 | |
Busbar | Three-phase four-wire system | A, B, C, PEN |
Three-phase five-wire system | A, B, C, PEN | |
Protection rating | IP30 | |
Weight | kilogram | 650 |
The data in the table are for reference only; the company reserves the right to modify the data and accepts special orders.
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