Description
Key Features and Functionality
Core Components
• Main Module: Includes 35kV three-phase SF₆ insulated bushings (epoxy resin encapsulated), SF₆ gas-sealed chamber, and conductive circuit;
• Operating Module: Equipped with manual/motorized operating mechanism and insulated operating rod;
• Auxiliary Components: Includes mounting fasteners, seals, and status indicators.
Features
• SF₆ Insulation: Utilizes SF₆ gas as the insulating medium, delivering superior insulation performance suitable for 35kV high-voltage applications;
• Outdoor Adaptability: Epoxy resin bushings provide rainproof, dustproof, and weather-resistant properties for long-term outdoor operation;
• Safety & Reliability: Sealed construction minimizes SF₆ gas leakage; operating mechanisms incorporate anti-misoperation interlocks.
Functions
• Load Switching: Interrupts normal load currents in 35kV systems to control line power supply;
• Insulation Isolation: Creates reliable insulation gaps after disconnection, meeting safety isolation requirements for line maintenance;
• Fault Protection: Models with integrated fuses can interrupt short-circuit fault currents.
Technical Specifications
| Parameter Category | Typical Specifications |
|---|---|
| Rated Voltage | 35kV |
| Rated Current | 630A |
| Rated Short-Circuit Breaking Current | 20kA (if equipped with fuse) |
| Insulation Medium | SF₆ gas |
| Operation Mode | Manual (insulated rod)/Electric (optional) |
| Protection Rating | IP65 (outdoor grade) |
Application Scenarios
• 35kV Distribution Networks: Serves as outdoor line branch switches and customer service switches to enable load control in regional distribution systems;
• Substation Feeders: Used in outdoor feeder circuits of 35kV substations to support circuit switching and isolation;
• Industrial Parks / Mining Areas: Designed for outdoor high-voltage distribution environments, providing feed control for large loads such as transformers.
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