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275 Embedded Pole - 275mm phase to phase

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  • Detail
    Rated Voltage :12kV

    Rated Current :630A、1250A、1600A

    Rated Frequency :50Hz
     
    Rated Short - circuit Breaking Current :25kA、31.5kA

    Rated Short - circuit Breaking Current Operation Times :30 times

    Rated Short - circuit Making Current :63kA、80kA
      
    Rated Peak Withstand Current :63kA、80kA

    Rated Short - time Withstand Current (4s) :31.5kA

    Rated Breaking Current for Single Capacitor Bank :630A

    Rated Breaking Current for Back-to-Back Capacitor Banks :400A

    Short - time (1min) Power Frequency Withstand Voltage :48kV

    Lightning Impulse Withstand Voltage (Peak Value) :85kV

    Loop Resistance at Rated Contact Pressure :≤25~30μΩ

    Mechanical Endurance :10,000 operations

    Contact Opening Force :110±60N

    Contact Reaction Force at Rated Opening Distance :180±50N

    Allowable Contact Wear Thickness :3mm

    Storage Period :20 years

    Partial Discharge Quantity :≤5pC

    Rated Operating Sequence :O-0.3s-CO-180s-CO


    Mechanical Parameters to be Met by the Matched Vacuum Circuit Breaker

    Contact Opening Distance :9±1mm

    Rated Over - travel :3.5±0.5mm

    Average Opening Speed :1.1±0.2m/s

    Average Closing Speed :0.8±0.2m/s

    Rated Contact Pressure :2500±200N、3200±200N

    Contact Closing Bounce Time :<2ms

    Contact Asynchronism :<1ms

    Opening Contact Rebound Amplitude :<2mm







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