Rotary disconnect switch GW13

high-voltageACoutdoor

Overview
GW13 is a V-type rotary outdoor high-voltage disconnector dedicated for neutral points. Rated voltages available: 40.5 kV, 72.5 kV and 126 kV.

Features

• Conductive material & current-carrying performance: Conductive arms use slot-shaped aluminum-alloy profiles with anodized surface treatment to provide high conductivity, corrosion resistance and heat dissipation; conductive arms support a maximum rated current of 4000 A and short-time withstand current up to 50 kA.
• Novel contact structure: Self-energized contact fingers made of chrome-bronze alloy use elastic deformation to clamp the contact blade; designed to meet rated current requirements, withstand short-term thermal loads and electromagnetic forces during short-circuit events, and offer superior mechanical wear resistance.
• Lightweight operation: Monobloc cast bearing housing combined with a linkage mechanism and an internal combined-support bearing structure enables low operating torque and reliable rotation.
• Maintenance-free transmission: Transmission system designed for maintenance-free operation; self-lubricating bushings and stainless-steel pins prevent binding of rotating components.

Technical specifications

• Model: GW13
• Type: V-type rotary outdoor high-voltage disconnector dedicated for neutral points
• Rated voltages: 40.5 kV; 72.5 kV; 126 kV
• Rated frequency: 50/60 Hz
• Rated normal current: up to 1600 A
• Maximum rated current (conductive arms): 4000 A (supports short-time withstand current up to 50 kA)
• Rated short-time withstand current: 25 kA, 40 kA
• Rated peak withstand current: 63 kA, 100 kA
• Operating temperature range: -50 °C to +55 °C
• Ice coating tolerance: 20 mm
• Seismic resistance: up to 1.0 g
• Contact material: chrome-bronze alloy (self-energized contact fingers)
• Conductive arm material: slot-shaped aluminum-alloy profiles with anodized surface
• Transmission: maintenance-free with self-lubricating bushings and stainless-steel pins