Product Features

• Arc‑extinguishing by vacuum interrupter High‑vacuum environment inside the vacuum interrupter serves as insulating and arc‑extinguishing medium under live‑line condition. When contacts separate under load driven by operating mechanism, vacuum arc generates between contacts and extinguishes at current zero‑crossing to interrupt circuit current.
• Adopts air‑silicone rubber & epoxy resin composite insulation; sealed‑pole type is also available.
• Fully enclosed in stainless‑steel or carbon‑steel housing. Excellent sealing performance for explosion‑proof, anti‑condensation and anti‑pollution.
• Two‑phase or three‑phase current transformers for protection, measurement or metering can be fitted inside the switch.
• Triple‑ratio CT is standard: 50‑100‑150/5, 100‑200‑300/5 or 200‑400‑600/5. Custom ratios are available based on customer load. Protection accuracy class: 10P10; measurement & metering accuracy class: 0.2S, 0.2, 0.5.
• Dry‑type voltage transformer can be internally installed to supply operating power and voltage sampling signals.
• Flexible solution with reserved distribution‑network automation interface for future function upgrade.

To meet upgrading and function‑expansion requirements for smart grid:  • Reclosing controller can be added for automatic reclosing function.  • Compatible with electronic PT; battery gets power supply from CT secondary. Multiple energy‑storage & close‑open operations are achievable under power‑loss condition, and working voltage can be supplied for external devices.  • Built‑in metering CT/PT supports remote prepayment. Zero‑sequence CT can be equipped for earth‑fault protection with sectionalizer controller. Simple remote controller is optional for local remote operation at pole base upon customer request.

• Optional disconnector Reliable mechanical interlock is realized between circuit‑breaker and single‑side / double‑side / upper‑mounted disconnector. Disconnector cannot perform close‑open operations when circuit‑breaker remains closed.
• Housing options: stainless steel or carbon steel. Surge controller (2‑phase or 3‑phase, subject to CT installation quantity) can be fitted to realize overload, short‑circuit and instantaneous‑trip protection. Current setting value and delay time are adjustable.
• Operating Mechanism CT spring mechanism supports both manual and motor‑driven operation.