GW5-35 Outdoor Isolator Switch (35kV Double Break Type)

Manual Air-Insulated Isolator for Outdoor Substation and Overhead Line Sectioning

The GW5-35 outdoor isolator switch is a 35kV class manually operated air-insulated isolator, designed for outdoor substations, overhead distribution networks, and feeder sectionalizing points. It features a double-break rotary blade design, ensuring clear visible isolation and high reliability in medium voltage switching systems.

This model is ideal for use in environments requiring safe maintenance isolation, busbar switching, or load-free manual operations in outdoor MV/HV systems.

🔧 Key Features

• Rated Voltage: 35kV

• Rated Current: 630A / 1250A / 1600A

• Operation Type: Manual (horizontal or vertical rotary)

• Structure: Double-break, three-pole, outdoor-mounted

• Installation: Concrete pedestal, steel structure, or pole-top

• Standard Compliance: IEC 62271-102 / GB 1985-2004

🌍 Typical Applications

• Sectionalizing points on 35kV overhead feeders

• Busbar disconnection in outdoor MV substations

• Transformer isolation for maintenance procedures

• Isolator use in wind/solar access switchyards

• Utilities and industrial zone power systems

The GW5-35 is widely used in rural grids, compact open-air substations, and power plant switchyards, where mechanical simplicity and durability are critical.

📊 Technical Specifications

🧱 Structural Highlights

• Double-break blade for full visible isolation

• Porcelain or polymer insulators with a high creepage distance

• Rotary linkage ensures stable phase synchronization

• UV- and corrosion-resistant metal components

• Earth switch optional for integrated earthing function

• Suitable for harsh weather conditions (–40°C to +50°C)

❓ Frequently Asked Questions

• Can GW5-35 switch under load?
No. It is a Isolator switch only—must be operated under no-load conditions or after breaker operation.

• What’s the difference between GW5 and GW4 types?
GW5 uses a double-break rotating blade for enhanced isolation; GW4 uses single-break linear movement.

• Is motorized operation available?
The standard GW5-35 is manually operated. Motorized options can be customized upon request.

• Can it be installed in coastal areas?
Yes. Polymer insulators and hot-dip galvanized structures are available for salt-fog environments.

• Is it compatible with 33kV systems?
Yes. It fully supports 33kV applications, complying with IEC and GB 35kV ratings.

📞 Contact Us for Design Support or Pricing

Need help selecting the right outdoor isolator for your 35kV system?

Get technical drawings, installation manuals, or custom configuration support:

Thor – Medium Voltage Switchgear Engineer
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]