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ZW20-12(24)F High-voltage vacuum circuit breaker for outdoor installation with protection zone delimitation function
High-voltage vacuum circuit breaker for outdoor installation of the ZW20-12 (24) F/T☐-☐ series (hereinafter referred to as the “switch”) is a switchgear for outdoor installation with a rated voltage of 12 (24) kV, three-phase alternating current with a frequency of 50 (60) Hz.
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Product Description
High-voltage vacuum circuit breaker for outdoor installation of the ZW20-12 (24) F/T☐-☐ series (hereinafter referred to as the “switch”) is a switchgear for outdoor installation with a rated voltage of 12 (24) kV, three-phase alternating current with a frequency of 50 (60) Hz. It uses a vacuum arc chute and SF6 gas as the insulating medium. This model is an improved version of the ZW20-12F pole-mounted vacuum circuit breaker. The housing uses sealing, explosion protection and insulating design technologies borrowed from the Japanese company Toshiba (model VSP5). Input and output cable glands have also been improved in sealing and overall sealing is excellent. The SF6 gas filling the internal volume does not leak and is not influenced by external factors. The spring drive has been optimized to reduce size and improve reliability and stability. A main drive with a direct chain drive and a multi-stage release system are used, which increases the reliability and stability of operation several times compared to traditional domestic spring drives. The contacts between the shaft and the main circuit bushing adopt an internal convergence and external expansion chain design, which ensures low main circuit contact resistance and low temperature rise. Thus, the outdoor pole mounted vacuum circuit breaker type ZW20-12 (24) F is a maintenance-free product and the best choice among pole mounted circuit breakers.
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