GW13-40.5/72.5/126kV Neutral Point High Voltage Isolator Switch

The GW13-40.5 Outdoor High Voltage Neutral Point Isolator Switch is a high-performance device specifically designed for outdoor applications in power systems up to 40.5kV. It serves as a crucial component for connecting the transformer neutral point to the grounding grid or for switching it under energized, no-load conditions. This ensures both equipment maintenance safety and robust, reliable isolation protection for the power system.

Its design strictly adheres to international standards such as GB1985 and IEC-129 (1984), guaranteeing stable and dependable operation in various harsh outdoor environments. This includes extreme temperature variations, strong winds, seismic activity, and even ice coating. The GW13-40.5 achieves industry-leading levels in structural design, material selection, and corrosion protection to effectively meet these severe outdoor challenges.

GW13-40.5/72.5/126kV Neutral Point High Voltage Isolator Switch

Product Features & Core Advantages: Designed for Outdoors, Unfazed by Challenges

The GW13-40.5 Isolator switch's design thoroughly considers the unique demands of outdoor environments, aiming to provide you with superior performance and a worry-free operational experience.

Exceptional Outdoor Adaptability: This switch is specifically engineered for high altitudes (up to 1000m), wide temperature ranges (-40°C to +40°C), strong winds (up to 700Pa wind pressure), high seismic intensity (up to Grade 8), and ice coating (up to 10mm). Its robust structure and optimized material selection ensure reliable operation even under these extreme conditions.
Unique Waterproof and Anti-Pollution Bearing Turntable Structure: The GW13-40.5 features an improved bearing turntable design with excellent waterproofing capabilities. It also includes an oil injection hole and adjustment screws, making routine maintenance and adjustments simpler and extending the equipment's service life.
Optimized Conductive Path Design, Reduced Temperature Rise: The main circuit effectively lowers loop resistance through precise brazing and flexible connections between conductive rods, contacts, and finger seats. This minimizes heat generation during operation, ensuring long-term high efficiency and stability.
Reinforced Earthing Rod, Enhanced Conductivity: The earthing rod is constructed from high-strength aluminum alloy, complemented by copper contact parts and flexible connections. This significantly enhances electrical conductivity, ensuring a safe and reliable grounding path.
Multi-Layer Anti-Corrosion Treatment, Lasting Durability: Exposed conductive parts are silver-plated red copper to effectively prevent oxidation and corrosion. The shaft and hole matching uses copper-on-copper or stainless steel-on-copper materials to prevent common outdoor seizing issues. All exposed standard parts are stainless steel, and other metal components undergo hot-dip galvanization, providing comprehensive corrosion protection and greatly extending product lifespan.
Flexible Operation, Easy Maintenance: The switch features a compact structure with a small footprint and versatile installation options. It can be configured with either a CS17G manual operating mechanism or a CJ6 motorized mechanism, offering flexible operation and easy maintenance.

Working Principle: Clear and Reliable Electrical Isolation

The GW13-40.5 Outdoor High Voltage Neutral Point Isolator Switch operates by a mechanism that drives its conductive parts to rotate, thereby achieving the separation or closing of the contact system. When the switch is in the open position, a distinct air insulation distance, compliant with safety standards, is formed between the contacts.

This visible gap completely disconnects the transformer neutral point from the grounding grid in the high-voltage circuit. It provides a safe and reliable working area for inspection, maintenance, or fault isolation of electrical equipment. Its core function is to ensure complete electrical isolation of the line under no-load and energized conditions.

Detailed Technical Specifications: Industry Standards, Superior Performance

Parameter Name	Unit	GW13-40.5 (Typical Value Range)
Rated Voltage	kV	40.5
Rated Current	A	630 / 1250
Rated Frequency	Hz	50 / 60
Rated Short-time Withstand Current (4s)	kA	25 / 31.5 / 40
Rated Peak Withstand Current	kA	63 / 80 / 100
Rated Power Frequency Withstand Voltage (1min)	kV	95
Rated Lightning Impulse Withstand Voltage (Peak)	kV	215
Mechanical Endurance	Cycles	2000
Ambient Temperature Range	°C	-40 ~ +40
Maximum Wind Pressure	Pa	700
Altitude	m	≤1000
Earthquake Intensity	Degree	≤8
Ice Coating Thickness	mm	≤10
Operation Method	-	Manual / Motorized

Typical Application Scenarios & Global Case Studies: Outdoor Power, Proven Strength

The GW13-40.5 Outdoor High Voltage Neutral Point Isolator Switch, with its outstanding outdoor adaptability and reliability, has played a crucial role in numerous critical outdoor power projects worldwide.

Australia Remote Area Solar Power Plant Project

Client: SunPower Energy Australia
Project Description: A large solar power plant in Western Australia required reliable neutral point isolation equipment to ensure the safe operation of its substation. This was particularly crucial for handling the high temperatures, dust, and occasional strong winds prevalent in desert regions.
Weisho Solution: The GW13-40.5 Isolator switch perfectly met the plant's needs with its excellent dust and waterproofing capabilities and wide temperature adaptation. Its robust anti-corrosion design further ensured equipment stability during long-term outdoor operation.
Client Feedback: "Weisho's GW13-40.5 Isolator switches are the reliable cornerstone of our solar power plant. Their outstanding performance in extreme weather ensures the continuous safe operation of our facility." — Mr. Liam O'Connell, Project Director.

Canada Northern Hydropower Plant Transmission Line Connection

Client: Hydro One Canada
Project Description: A hydropower plant in northern Canada needed highly reliable outdoor Isolator switches at its transmission line interface. The area experiences extremely cold winters with heavy snow and ice, imposing stringent requirements for equipment's low-temperature resistance and anti-ice capabilities.
Weisho Solution: The GW13-40.5's ultra-low temperature operation capability down to -40°C and powerful anti-ice design made it an ideal choice for this project. Its robust mechanical structure ensured smooth operation even when covered in ice and snow.
Client Feedback: "This GW13-40.5 Isolator switch has demonstrated exceptional reliability during Canada's harsh winters. Its anti-ice capabilities are particularly impressive, safeguarding our power dispatching during critical moments." — Ms. Nicole Tremblay, Grid Operations Manager.

Chile Mining Area High Voltage Substation Expansion

Client: Codelco Copper Group, Chile
Project Description: A large copper mining area deep in the Chilean Andes was expanding its high-voltage substation. The project site is at high altitude, with unpredictable weather, and frequently faces strong winds and seismic risks, thus requiring highly reliable and easy-to-maintain outdoor isolation equipment.
Weisho Solution: The GW13-40.5 Isolator switch stood out due to its high-altitude adaptability, wind pressure resistance, and seismic withstand capability. Its ease of maintenance also significantly reduced the operational and maintenance challenges in the harsh mining environment.
Client Feedback: "The GW13-40.5 has performed excellently in our mining area's high-voltage system, even in complex and changing high-mountain environments. Its reliability and low maintenance requirements are crucial for us." — Mr. Ricardo Rojas, Head of Electrical Engineering.

India Coastal Region Wind Farm Interconnection Point

Client: Suzlon Energy Ltd., India
Project Description: A newly built wind farm on the coast of Gujarat, India, required connecting wind turbines to the national grid. The area experiences severe salt spray corrosion, strong winds, and high humidity during monsoon seasons.
Weisho Solution: The GW13-40.5, through its multi-layer anti-corrosion treatment (silver-plated red copper, hot-dip galvanization, stainless steel components) and optimized waterproof design, perfectly handled the challenges of high salt spray and humidity in coastal areas. This ensures long-term stable operation.
Client Feedback: "Weisho's GW13-40.5 Isolator switch has performed exceptionally well at our coastal wind farm. Its superior anti-corrosion performance addressed our biggest concerns. We are confident in its long-term reliability." — Mr. Anand Sharma, Wind Power Project Director.

Installation, Maintenance, and Safety Assurance: Simplified Operations, Enhanced Reliability

Convenient Installation: The GW13-40.5 features a standardized design, ensuring simple and rapid installation. We provide detailed installation dimension drawings and can offer professional on-site installation guidance as per client requirements.
Low Maintenance Needs: Thanks to high-quality materials and precise manufacturing processes, this product boasts extremely high reliability and extended maintenance-free cycles. This significantly reduces user operational costs. The oil injection hole and adjustment screws on the bearing turntable further simplify maintenance procedures.
Safety First: The GW13-40.5 provides a clear, visible break, ensuring complete electrical isolation. The product fully complies with international and national standards such as GB and IEC, ensuring peace of mind for users. It can be equipped with a CS17G manual operating mechanism or a CJ6 motorized mechanism, ensuring safe and convenient operation.

Weisho Electric: Your Trusted Partner for High-Voltage Electrical Equipment

As a leading manufacturer deeply rooted in the power equipment industry for 12 years, 伟秀电气 (Weisho Electric Co., Ltd.) is dedicated to providing high-quality electrical equipment solutions to clients worldwide. The GW13-40.5 Outdoor High Voltage Neutral Point Isolator Switch is another testament to our commitment to technological innovation and customer satisfaction.

We operate with a comprehensive quality management system, meticulously controlling every stage from raw material procurement to product ex-factory. This ensures that every piece of equipment meets world-class quality standards. Choosing 伟秀电气 means choosing safety, efficiency, and reliability.

Frequently Asked Questions (FAQ): We Are Here to Answer Your Queries

Q: Which outdoor environments is the GW13-40.5 Isolator switch primarily suitable for?
A: The GW13-40.5 is designed to adapt to a variety of harsh outdoor environments. This includes high altitudes (≤1000m), wide temperature variations (-40°C to +40°C), strong winds (wind pressure ≤700Pa), high seismic intensity (≤8 degrees), and ice coating (≤10mm).
Q: How does this Isolator switch address outdoor corrosion issues?
A: The GW13-40.5 employs multiple anti-corrosion measures. These include silver-plated red copper for exposed conductive parts, copper-on-copper or stainless steel-on-copper for shaft-hole matching, and hot-dip galvanization for all metal components, ensuring excellent corrosion resistance.
Q: Does the GW13-40.5 support automated operation?
A: Yes, in addition to supporting the CS17G manual operating mechanism, the GW13-40.5 can also be equipped with a CJ6 motorized mechanism for remote or automated control.
Q: How does Weisho Electric guarantee the performance and quality of the GW13-40.5?
A: Weisho Electric Co., Ltd. is ISO9001 quality management system certified. All products are designed and manufactured in strict adherence to international standards such as GB1985 and IEC-129 (1984). They undergo comprehensive and rigorous factory testing before shipment to ensure superior performance and reliable quality.
Q: If my project has specific environmental requirements, can Weisho Electric provide customized services?
A: Absolutely! We have an experienced engineering team that can provide professional consultation, selection advice, and even customized solutions based on your specific project needs and unique environmental conditions.

Contact Us Now for Professional Solutions!

Are you interested in the GW13-40.5 Outdoor High Voltage Neutral Point Isolator Switch? Whether you have questions, need a detailed quote, or are seeking tailored solutions, the professional team at Weisho Electric Co., Ltd., is ready to assist you.