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LW30-126/145T3150-40HV SF6 Circuit Breaker


1 Overview
  LW30-126/145/3150-40 SF6 high-voltage AC circuit breaker is of 3-phase 50Hz high-voltage switchgear,used for the control and protection of 126kV/145kV power distribution and transmission system,as well as being used as the network interconnected circuit breaker and in the places switching capacit or bank.
2 Service and Installation Conditions
  Ambient temperature: -30℃~+40℃ (special order - 50℃~+40℃)
  Altitude:≤1000m(No limitation for special order)
  Humidity:
  Relative humidity at average per day (25℃): ≤95%
  Relative humidity at average per month:      ≤90%
  Saturation vapour pressure: Daily average ≤2.2×10MPa
  Monthly average ≤1.8×10MPa
  Wind pressure:  ≤700Pa
  Icing thickness: 10mm
  Seismic intensity:
    Horizontal acceleration: ≤0.3g
  Vertical acceleration:  ≤0.15g
  Sunshine intensity:  0.1w/cm (at wind velocity of 0.5m/s)
  Max. daily temperature rise:  25℃
  Symmetrical Creepage distance:  31mm/kV
  Protection class: IP54
  Keep the breaker away from places with combustible, explosive, corrosive materials and violent vibrations.