GCK Low Voltage Switchgear – Withdrawable Type Voltage Switchgear for Power Control & Distribution

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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.

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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.

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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

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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.

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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.

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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)

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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.

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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.

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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.

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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.

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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.

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Ordering Information

To customize your GCK Voltage Switchgear system, please provide:

1. Main and auxiliary circuit diagrams.
2. Cabinet outline and installation dimensions.
3. Quantity and specifications of drawer units.
4. Incoming/outgoing mode and operation type.
5. Any custom modifications or automation requirements.