3KV 6KV 10KV Medium Voltage Switchgear

For 3kV, 6kV and 10kV Medium Voltage Switchgear, the configuration can be customized according to project requirements, system voltage, installation conditions, protection functions and applicable standards.

Customization Options:

• Rated Voltage: 3kV / 6kV / 10kV or project-specific
• Rated Current: Customized according to load requirements
• Busbar Configuration: Single busbar / sectionalized busbar / customized
• Circuit Type: Incoming / Outgoing / Bus Coupler / Feeder
• Protection: Overcurrent, short-circuit, earth-fault and other protection functions
• Switching Device: Vacuum circuit breaker or customized switching solution
• CT / PT: Customized ratio, accuracy class and configuration
• Protection & Control: Relay protection, metering, monitoring and control systems
• Enclosure: Indoor or outdoor configuration
• Ingress Protection: Customized IP rating according to installation environment
• Cable Entry: Top / bottom entry according to project layout
• Operating Mechanism: Manual / electrical operation
• Communication: Modbus RTU, RS485 and other communication options
• Standards: IEC / ANSI / GB / GOST and other project-specific standards
• Special Environment: High altitude, high humidity, coastal, mining and other harsh environments
• Dimensions: Customized panel dimensions and arrangement
• Color & Identification: Customized enclosure color, labels and nameplates

Engineering Support:
Provide the single-line diagram, system voltage, rated current, short-circuit capacity, installation environment and applicable standard to receive a customized switchgear solution.

Our 3kV, 6kV and 10kV Medium Voltage Switchgear is professionally packed to protect electrical components, enclosure surfaces and internal mechanisms throughout transportation and storage.

1. Standard Packing

• Switchgear panels are securely fixed before packing.
• Sensitive electrical components are protected against impact and vibration.
• Internal moving parts are secured to prevent damage during transportation.
• Cabinet surfaces are covered with protective film.
• Moisture-proof and dust-proof materials are used where required.
• Each panel is clearly marked with model, panel number, lifting points and project identification.

2. Export Wooden Case

For international shipments, switchgear panels can be packed in strong export-grade wooden cases.

• Reinforced wooden structure
• Shock and vibration protection
• Moisture-resistant inner packaging
• Suitable for container and long-distance transportation
• Customized packing according to panel dimensions and shipping requirements

3. Container Loading

The switchgear is arranged according to the container loading plan to maximize space utilization while maintaining safe clearance.

Typical shipping options include:

• 20GP / 40GP containers
• 40HQ containers
• Customized container loading for large projects

Panels are securely fixed inside the container to prevent movement during sea or road transportation.

4. Shipping Options

We can support:

• Sea Freight — Suitable for international EPC and bulk orders
• Road Transportation — Suitable for regional and cross-border delivery
• Rail Freight — Available for selected international routes
• Multimodal Transportation — Combined transportation according to project requirements

5. Shipping Documents

Standard export documentation can include:

• Commercial Invoice
• Packing List
• Bill of Lading
• Certificate of Origin
• Factory Test Reports
• Product Inspection Documents
• Other project-specific documents

6. EPC Project Support

For EPC and utility projects, packing and shipping can be coordinated according to the project delivery schedule, installation sequence, destination port, container requirements and site conditions.

From factory testing to export packing and global delivery, every shipment is prepared to minimize transportation risk and support smooth site installation.

Before delivery, every 3kV, 6kV and 10kV Medium Voltage Switchgear is inspected and tested at the manufacturer’s facility to verify electrical performance, mechanical operation, insulation integrity and compliance with the approved technical specifications.

1. Visual & Dimensional Inspection

• Overall appearance and workmanship
• Cabinet dimensions and panel arrangement
• Nameplates, labels and identification
• Busbar arrangement and clearances
• Cable entry and connection points
• Earthing system and enclosure integrity

2. Mechanical Operation Test

• Circuit breaker opening and closing operation
• Disconnector operation
• Earthing switch operation
• Mechanical interlocking
• Door and operating mechanism interlocks
• Manual and electrical operating functions
• Smoothness and reliability of mechanical operation

3. Electrical Interlock Test

The interlocking system is tested to prevent incorrect operating sequences and improve personnel and equipment safety.

Typical checks include:

• Circuit breaker / disconnector interlock
• Earthing switch interlock
• Door interlock
• Preventing incorrect switching operations
• Electrical and mechanical interlock coordination

4. Insulation & Dielectric Tests

Electrical insulation is verified according to the applicable standard and approved technical requirements.

Testing may include:

• Power-frequency withstand test
• Insulation resistance measurement
• Main circuit insulation verification
• Control circuit insulation verification
• Phase-to-phase and phase-to-earth insulation checks

5. Main Circuit Resistance Test

The resistance of the main current-carrying circuit is measured to verify proper electrical connections and minimize abnormal heating during operation.

6. Protection & Control Test

For switchgear equipped with protection and control systems:

• Protection relay function verification
• Overcurrent protection
• Short-circuit protection
• Earth-fault protection
• Metering function
• Trip and closing circuit verification
• Alarm and indication functions
• Remote control and monitoring functions when specified

7. CT / PT Test

Where applicable, current transformers and voltage transformers are tested according to the project requirements, including:

• Transformation ratio
• Polarity
• Insulation performance
• Accuracy requirements
• Secondary circuit connections

8. Secondary Circuit Test

• Control wiring inspection
• Terminal connection verification
• Control circuit continuity
• Auxiliary power circuit testing
• Signal and indication verification
• Communication interface testing when specified

9. Functional & Simulation Test

The complete switchgear assembly can be functionally tested to simulate actual operating conditions, including:

Incoming → Busbar → Feeder → Protection → Trip → Alarm → Indication

This helps verify coordination between the primary equipment, protection system and control circuits before shipment.

10. Factory Test Documentation

After testing, the manufacturer can provide relevant documentation according to the project requirements, such as:

• Factory Test Report
• Routine Test Records
• Inspection Records
• Protection Relay Test Report
• Circuit Breaker Test Records
• Technical Documentation
• Operation & Maintenance Manual

Final Quality Control:
Each switchgear panel is inspected and tested before shipment to ensure that the delivered equipment meets the approved technical specifications, applicable standards and project requirements.