The 3 GCK Low-Voltage guide Withdrawable Switchgear is a modular, metal-enclosed, withdrawable type low-voltage panel designed for high-reliability power distribution, motor control, and reactive power compensation. It is suitable for applications requiring high levels of automation and remote communication such as large power stations, petrochemical systems, and intelligent power grids.
Compliant with IEC 60439-1, the GCK Withdrawable Switchgear ensures excellent safety, maintainability, and configuration flexibility, with an enclosure protection degree of IP30 or IP40.
Technical Specifications of GCK Low Voltage Switchgear
| Parameter | Specification |
|---|
| Rated Insulation Voltage | 690V / 1000V |
| Rated Operating Voltage | 400V / 690V |
| Rated Frequency | 50Hz / 60Hz |
| Impulse Withstand Voltage | 8kV |
| Auxiliary Circuit Voltage | AC380/220V, DC110/220V |
| Over-voltage Category | Class III |
| Rated Current (Main Bus) | Up to 5000A |
| Rated Current (Vertical Bus) | Up to 1000A |
| Protection Level | IP30 / IP40 |
| Busbar Configuration | 3P4W / 3P5W |
| Standard Compliance | IEC60439-1 |
| Structure Type | Modular, Drawer-type, Compartmentalized |
Application Fields
- Thermal and hydropower stations
- Chemical & petrochemical plants
- Large industrial automation systems
- Commercial and municipal buildings
- Renewable energy power control panels
Cabinet Structure and Features
Cabinet Framework
- Modular C-type frame using FA28 or KB type steel.
- All structural components are corrosion-resistant and galvanized.
- Top covers are removable for easy busbar installation.
- Surface treated with epoxy powder electrostatic coating.
Withdrawable Functional Units
- Units available in 1/2U, 1U, 2U, 3U heights (200mm–600mm).
- Interlocked drawer mechanism with clear test/isolation/working position indicators.
- Optional padlock support for secure maintenance.
- Each MCC panel can install up to 18 drawers of 1/2 unit size.
Safety & Isolation
- Compartment doors interlocked with switch positions.
- Drawer equipped with main circuit plug, auxiliary plug, grounding plug.
- Vertical busbar shielding ensures safety during drawer movement.
- Five-proof interlock design supports safe live maintenance.
Cabinet Dimensions (in mm)
| Cabinet Type | Width (A) | Internal Width (B) |
|---|
| Feeder Cabinet | 600, 800 | 486 |
| Power/Bus Cabinet | 800, 1000 | 686, 886 |
| Motor Control Cabinet | 600, 800 | – |
| Power Compensation Panel | 600, 800, 1000 | – |
| Depth (all types) | 800 / 1000 (recommended) | |
Busbar Specifications
| Rated Current (A) | Copper Bus Size (mm) |
|---|
| 630 | 50 × 5 |
| 1250 | 60 × 10 |
| 1600 | 80 × 10 |
| 2000 | 100 × 10 |
| 2500 | 2 × (80 × 10) |
| 3150 | 2 × (100 × 10) |
Operating Conditions
| Environmental Factor | Specification |
|---|
| Ambient Temperature | -5℃ ~ +40℃ |
| Storage Temperature | -25℃ ~ +55℃ (Max short-term: 70℃) |
| Relative Humidity | ≤50% at +40℃; up to 90% at +20℃ |
| Altitude | ≤2000m |
| Installation Inclination | ≤5° |
| Corrosive/Flammable Gases | Not allowed |
Frequently Asked Questions
Q1: What is the advantage of GCK withdrawable design?
A: It allows safe, quick maintenance and replacement without powering down the entire switchgear panel.
Q2: Can the GCK be customized for special busbar guide configurations?
A: Yes. Horizontal or vertical busbars can be arranged at the top or bottom per project needs.
Q3: Is GCK compliant with international safety standards?
A: Yes. It complies with IEC60439-1 and supports protection classes IP30/IP40.
