Introduction to GCK Low Voltage Switchgear
The GCK Low Voltage Switchgear, a withdrawable-type modular panel system, is designed to meet the demanding control, distribution, and reactive power compensation needs in modern Voltage Switchgear environments. This versatile system is widely applied in large-scale power stations, petrochemical enterprises, automation-intensive sectors, and facilities requiring advanced communication capabilities with monitoring computers.
With a protection rating of IP30 or IP40 and conforming to IEC 60439-1, the GCK Voltage Switchgear ensures safety, efficiency, and ease of maintenance across industrial, commercial, and infrastructure applications.
Key Features of the GCK Low Voltage Switchgear
- Withdrawable Functional Units: Support feeder, motor, and utility power units with drawer sizes customizable from ½ to 3-unit height.
- Three-Zone Separation Design: Cabinet is compartmentalized into busbar, functional, and cable areas for safety and maintenance.
- Interlocking Mechanism: Drawer positions feature mechanical interlocks for working, testing, and isolation stages with lockout capability.
- Modular Frame Structure: Standardized components with 25mm E-module grid for flexible configuration.
- High Busbar Capacity: Rated up to 5000A for horizontal busbars with robust short-circuit withstand capabilities.
Technical Specifications of GCK Low Voltage Switchgear
Electrical Specifications
| Item | Value |
|---|---|
| Rated Insulation Voltage | 690V / 1000V |
| Rated Operational Voltage | 400V / 690V |
| Rated Frequency | 50 / 60 Hz |
| Rated Impulse Withstand Voltage | 8kV |
| Rated Voltage of Auxiliary Circuit | AC380V / AC220V / DC110V / DC220V |
| Overvoltage Grade | III |
| Rated Current | ≤5000A |
| Horizontal Busbar Current | ≤5000A |
| Vertical Busbar Current | 1000A |
Mechanical & Structural Features
- Incoming/Outgoing Mode: Cable or busbar type, top or bottom.
- Mounting System: Modular with interchangeable components.
- Compartmentalization: Full/partial isolation for enhanced safety.
- Modular Units: ½ unit to 3-unit drawer modules.
- Earthing: Continuous grounding through galvanized internal structure.
- Operation Types: Local, remote, and automatic operation.
Construction and Materials
1. Cabinet Frame
- Constructed with C-type steel or KB-type assembly structures.
- Electrostatic epoxy powder coating with phosphating pretreatment.
- Removable top cover for easy busbar installation.
- Internal parts are galvanized for anti-corrosion and electrical continuity.
2. Functional Units
| Drawer Height | Series | Application |
|---|---|---|
| ½ Unit | 100mm | Low power feeders |
| 1 Unit | 200mm | Motor starters |
| 2 Unit | 400mm | Medium feeders |
| 3 Unit | 600mm | High capacity loads |
- Maximum of 18 drawers (½ unit) or 9 drawers (1 unit) per MCC.
- Rated current: up to 630A per functional loop.
- Interlock protection between drawer and operation mechanism.
- Position indicators for: working, test, isolation.
3. Busbar System
- Busbars arranged at top or bottom based on configuration.
- Horizontal busbars: 3P4W / 3P5W structure.
- Vertical busbars sealed with polycarbonate plastic.
- PE and N busbars available as per protection requirements.
Cabinet Dimensions & Installation
General Dimensions (mm)
| Type | Width | Depth | Notes |
|---|---|---|---|
| Power Cabinet | 600 / 800 / 1000 / 1200 | 800 / 1000 | Top incoming/outgoing uses 1000mm |
| Feeder Cabinet | 600 / 800 | 600 / 1000 | Recommended 1000mm depth |
| Motor Control Cabinet | 600 / 800 | 800 / 1000 | 600 + 200 configuration optional |
| Compensation Cabinet | 600 / 800 / 1000 | 800 / 1000 | Based on number of loops |
Copper Busbar Specification
| Rated Current (A) | Copper Busbar Size (mm) |
|---|---|
| 630 | 50 × 5 |
| 1250 | 60 × 10 |
| 1600 | 80 × 10 |
| 2000 | 100 × 10 |
| 2500 | 2 × (80 × 10) |
| 3150 | 2 × (100 × 10) |
Functional Highlights of Voltage Switchgear
- Modularization: Equipment and component interfaces designed on a 25mm E-grid for easy plug-and-play replacements.
- Safety First: Functional units are electrically and mechanically isolated during drawer extraction.
- Control Flexibility: Supports local and remote operation with intelligent control units.
- Reliability and Continuity: Rear-mounted auxiliary and earthing plugs ensure continuous operation without arc exposure.
- Expandable Design: Easily add power loops, feeders, or motor units as demand grows.
FAQ: Common Questions about GCK Voltage Switchgear
Q1: What distinguishes GCK Voltage Switchgear from other low-voltage systems?
A: GCK Voltage Switchgear stands out with its modular withdrawable drawers, complete compartmental separation, and support for automation, making it ideal for applications that require flexible and intelligent power management.
Q2: Can GCK Voltage Switchgear support automation and remote monitoring?
A: Yes, the system supports long-distance and automatic operations, making it suitable for integration with SCADA and other intelligent energy management systems.
Q3: How many drawers can a single MCC unit support?
A: A single MCC unit can support up to 18 drawers of ½ unit size or 9 drawers of 1 unit size, allowing high-density configuration and efficient space utilization.
Benefits of Using GCK Voltage Switchgear
- Enhances safety through mechanical interlocks and physical isolation.
- Reduces downtime with drawer-based maintenance and rapid replacement.
- Increases operational intelligence through remote monitoring capabilities.
- Scales easily with modular frame and expandable busbar system.
- Ideal for environments demanding Voltage Switchgear performance with high reliability and automation.
Ordering Information
To customize your GCK Voltage Switchgear system, please provide:
- Main and auxiliary circuit diagrams.
- Cabinet outline and installation dimensions.
- Quantity and specifications of drawer units.
- Incoming/outgoing mode and operation type.
- Any custom modifications or automation requirements.