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LW30-252/T4000-50 HV SF6 Circuit Breaker


1 Overview
  LW30-252 outdoor high-volt SF6 circuit breaker, three-phase AC 50Hz outdoor switchgear, is applicable for the control and protection of 252KV power transmission and distribution system and the network interconnected circuit breaker.
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