The isolating switch is of a unipolar type, and the three poles can be connected by a connecting rod into a three-pole type that can be linked. It is equipped with CS11 or CS8-6D manual mechanism. CS17 is used for the isolating switch with double grounding device. (The electric mechanism can be equipped as needed).
The isolation switch has reasonable structure and flexible operation: it can be used for single pole or three poles, and the installation is convenient: the touch knife is opened, and the insulation is safe and reliable. It can also be grounded or double grounded according to user needs.
Models and implication
| Name | Unit | GW4-12 | GW4-40.5 | GW4-72.5 | GW4-126 | GW4-126G | GW4-145 | |
| Rated voltage | KV | 12 | 40.5 | 72.5 | 126 | 126 | 145 | |
| Rated current | A | 200 400 630 1000 1250 | 630 1000 2000 2500 | 630 1250 2000 2500 | 630 1250 2000 2500 | 630 1250 | 630 1250 2000 2500 | |
| Rated short-circuit withstand current (RMS) | KA | 16 20 25 | 20 31.5 40(46) | 20 31.5 40(46) | 20 31.5 40(46) | 20 31.5 | 20 31.5 40(46) | |
| Rated peak withstand current (RMS) | KA | 40 50 63 | 50 80 100(104) | 50 80 100(104) | 50 80 100(104) | 50 80 | 50 80 100(104) | |
| 1min power frequency withstand voltage (peak) | To the ground | KV | 42 | 80 | 140 | 185 (230) | 185 | 275 |
| Fracture | 48 | 90 | 160 | 210 (265) | 210 | 315 | ||
| Lightning impulse withstand voltage (peak) | To the ground | 75 | 185 | 325 | 450 (550) | 450 | 650 | |
| Fracture | 85 | 215 | 375 | 520 (530) | 550 | 750 | ||
| Terminal horizontal tension | N | 250 | 490 (735) | 735 | 735 | 735 | 980 | |
| Monopolar weight | kg | 60 | 80 | 200 | 240 | 240 | 300 | |
| Remarks | Suitable for altitude 2000m | Suitable for 110kv altitude 4000m | ||||||
The GW4 SERIES Outdoor High Voltage Isolating Switch Vacuum LBS Load Break Switch is designed to deliver reliable, safe, and efficient switching for outdoor High Voltage networks. Combining vacuum interruption technology, load break capabilities, and robust insulation, it ensures operational continuity and low maintenance for substations, industrial networks, and utility systems.
This guide provides insights into storage conditions, customer feedback, upgrade maintenance plans, and practical solutions, making it a valuable resource for engineers, operators, and procurement specialists.
Overview of GW4 SERIES Switch
Core Features and Advantages
Storage Conditions and Handling
Customer Feedback and Testimonials
Upgrade and Maintenance Plan
Technical Specifications
Installation Guidelines
Operation Principles
Troubleshooting and Fault Solutions
Practical Solutions for Network Challenges
Safety Considerations
Certifications and Compliance
Conclusion
The GW4 SERIES Outdoor High Voltage Isolating Switch is designed for medium to high voltage outdoor applications, providing:
Vacuum LBS Technology: Allows safe load interruption without arc formation.
Robust Insulation: Enhances durability in harsh environments.
Compact Outdoor Design: Optimizes space utilization.
Reliable Mechanical Components: Ensures long-term operational stability.
IEC Compliance: Meets international safety and performance standards.
| Feature | Advantage |
|---|---|
| Vacuum Interruption | Arc-free switching for extended service life |
| Load Break Switch (LBS) | Safely interrupts load currents during operation |
| Outdoor Weatherproof Design | Resistant to rain, dust, and temperature variations |
| Compact and Lightweight | Easy installation and integration into existing networks |
| Remote and Manual Operation | Supports SCADA integration and local operation |
| High Mechanical Reliability | Reduces maintenance frequency and operational risks |
| IEC and ISO Certification | Compliance with international standards |
| Cost-Efficient Maintenance | Long-term savings in operational costs |
Proper storage and handling of GW4 SERIES switches are crucial to maintain performance and safety.
Store in a dry, ventilated area, avoiding direct sunlight.
Maintain ambient temperature between -10°C and +40°C.
Avoid exposure to moisture, corrosive gases, and dust accumulation.
Ensure the unit is positioned upright as recommended by the manufacturer.
Use cranes, forklifts, or hoists at specified lifting points.
Avoid dropping, tilting, or applying excessive force.
Inspect packaging and components for damage before installation.
The GW4 SERIES switches have received positive feedback from a variety of industrial and utility clients:
Substation Operators: Praise the reliability and low maintenance requirements.
Industrial Networks: Appreciate ease of installation and compact design.
Utility Companies: Value automatic load interruption and vacuum technology for operational safety.
| Customer Type | Feedback Highlights |
|---|---|
| Utility Company (Europe) | "The GW4 switch significantly reduced outage time and maintenance costs." |
| Industrial Plant (Asia) | "Compact design allowed easy integration into our existing network." |
| Substation Operator (Middle East) | "Vacuum LBS technology ensures safe and reliable operation under high load conditions." |
| Maintenance Task | Frequency | Description |
|---|---|---|
| Visual Inspection | Monthly | Check for corrosion, dust, or mechanical wear |
| Mechanical Operation Test | Quarterly | Test opening/closing mechanisms |
| Insulation Resistance Test | Bi-Annually | Verify insulation condition |
| Lubrication of Moving Parts | Bi-Annually | Ensure smooth mechanical operation |
| Component Replacement | As Needed | Replace worn or damaged parts |
Firmware/Control Upgrades: For smart monitoring and SCADA integration.
Mechanical Upgrades: Replacement of high-wear moving parts for extended life.
Insulation Enhancement: Optional upgrades for areas with extreme weather conditions.
| Specification | Parameter |
|---|---|
| Rated Voltage | 12 kV – 40.5 kV |
| Rated Current | 630–1250 A |
| Short-Circuit Breaking Capacity | 16–25 kA |
| Insulation Level | IEC standard compliant |
| Operating Mechanism | Manual, Spring, or Motor-assisted |
| Ambient Temperature | -10°C to +40°C |
| Relative Humidity | ≤95% |
| Protection Grade | IP54 / IP65 |
Choose a stable, level foundation with sufficient drainage.
Ensure adequate clearance for operation and maintenance.
Avoid areas with high vibration, corrosive chemicals, or flood risk.
Position the switch on the prepared foundation.
Secure using anchor bolts and check for level alignment.
Connect incoming and outgoing conductors according to wiring diagrams.
Install grounding system per IEC standards.
Conduct mechanical and electrical tests before energization.
| Step | Status/Notes |
|---|---|
| Foundation Stability | Confirmed |
| Mechanical Fastening | Secured and level |
| Electrical Connections | Verified per schematic |
| Grounding/Earthing | Connected and tested |
| Functional Testing | Passed inspection |
The GW4 SERIES switch operates on the principle of vacuum load break interruption:
Load Detection: Monitors current conditions to detect load interruptions.
Switching Action: Vacuum interrupters safely interrupt load current.
Manual Operation: Provides emergency isolation if necessary.
Remote Operation: Integrates with SCADA for automatic control.
Safety Locking: Prevents operation under unsafe conditions.
| Issue | Possible Cause | Recommended Action |
|---|---|---|
| Switch fails to operate | Mechanical blockage | Inspect and adjust mechanism |
| Load not interrupted | Sensor or vacuum interrupter fault | Test and replace components |
| Excessive noise during operation | Worn moving parts | Lubricate or replace moving parts |
| Electrical arcing | Contaminated contacts or insulation | Clean or replace contacts |
| Failure of remote control | Control circuit or wiring issue | Check and repair control connections |
Integration into Smart Grids: Compatible with SCADA and automated monitoring.
Harsh Environmental Conditions: Solid insulation and weatherproof design.
Maintenance Optimization: Upgrade plans and preventive schedules reduce downtime.
Safety Enhancement: Vacuum LBS technology ensures arc-free switching and reliable isolation.
Always disconnect power before maintenance.
Wear PPE including insulated gloves and protective clothing.
Avoid contact with live parts.
Follow IEC standards and manufacturer guidelines.
Verify grounding and earthing are properly installed.
IEC 62271 Series: High-voltage switchgear standard
ISO 9001: Quality management certification
CE Marking: Safety and environmental compliance
RoHS Directive: Restriction of hazardous substances
The GW4 SERIES Outdoor High Voltage Isolating Switch Vacuum LBS Load Break Switch is a reliable, safe, and maintenance-friendly solution for outdoor medium and high voltage applications. With vacuum load break technology, solid insulation, and robust design, it ensures operational continuity, safety, and long-term performance.
Proper storage, installation, maintenance, and upgrade plans guarantee optimal performance, making it ideal for substations, industrial networks, and outdoor utility systems.
Phone: +8613736779975
E-mail: sales@vcbbreaker.com
Address: 66 Punan Road, Yueqing Economic Development Zone, Zhejiang, China
Copyright © 2025 Yangmei Electric Group All rights reserved
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