Chave de desconexão de alta tensão externa GW4 33kV 40.5kV

The GW4 series covers voltage levels from 33kV, 35kV, to 40.5kV, making it widely used in 110kV and 66kV substations (step-down side applications) and medium-voltage distribution networks.

It is mainly used to:

• isolate high-voltage equipment during maintenance
• provide a visible air-gap disconnection point
• safely disconnect busbars, transformers, and circuit breakers
• operate only under no-load conditions

The switch is typically installed in:

• outdoor substations
• power plants
• industrial switchyards
• renewable energy (wind/solar) substations

Main Features

• Rated voltage: 33kV / 40.5kV
• Outdoor installation, heavy-duty design
• Double-column or center-break structure
• Visible isolation gap for safety confirmation
• Manual or motorized operation available
• Optional single or double grounding switch (D type)
• Anti-pollution porcelain or composite insulators
• Strong mechanical linkage system
• Suitable for harsh outdoor environments

Technical Specifications (Typical for 40.5kV class)

Significado do modelo

Typical model examples:

• GW4-33
• GW4-40.5
• GW4-40.5D (with grounding switch)
• GW4-40.5W (anti-pollution type)

Meaning:

• GW = Outdoor disconnect switch
• 4 = Design series
• 33 / 40.5 = Rated voltage (kV)
• D = With grounding knife switch
• W = Anti-pollution version
• 630 / 1250 = Rated current

Condições de trabalho

• Temperatura ambiente: -30°C to +40°C
• Altitude: ≤3000m
• Wind speed: ≤35m/s
• Pollution level: Class III
• Intensidade do terremoto: ≤8 graus
• No flammable, explosive, or corrosive environment

Aplicativos

• Outdoor substations (33kV / 40.5kV systems)
• Power transmission & distribution networks
• Transformer isolation switching
• Circuit breaker maintenance isolation
• Solar and wind power substations
• Industrial power systems

Product Advantages

High Safety Isolation

Provides a clear visible break, ensuring safe maintenance operations.

Strong Outdoor Durability

Designed for long-term exposure to UV, rain, wind, and pollution.

Flexible Configuration

Supports grounding switches, motor operation, and anti-pollution upgrades.

Reliable Mechanical Structure

Robust linkage ensures synchronized phase operation and long service life.

Desenho de contorno