POWER GRID EQUIPMENT

LW30-145 Outdoor Live Tank HV SF6 Circuit Breaker

1.1 LW30-145 Outdoor HV SF6 Circuit Breaker is of 3-phase, AC, 50Hz high-voltage switchgear, used for the control and protection of 145kV power distribution and transmission system, as well as being used as the network interconnected circuit breaker and in the places switching capacitor bank. 

1.2 The LW30-145 circuit breaker adopts the principle of self-energized arc control principle (thermal expansion + blowing assistance), and is incorporated with CT26 spring operating mechanism. 

1.3 The breaker conforms to GB1984-2014 about AC High Voltage Circuit Breaker and IEC62271-100 about High-Voltage Switchgear and Controlgear -- Part 100: High-Voltage AC Circuit Breakers. 

1.4 Main characteristics Self-energized arc control principle, excellent breaking capacity; short arcing time, long electrical life, low operation noise; Adopting SF6 as the insulating medium, no danger of fire and explosion, could be used for the population dense area; Spring operating mechanism is incorporated to provide simple and compact structure, safe and reliable operation. 

1.5 Working conditions

1.5.1 Ambient temperature -30℃～+45℃ (Special requirements, special design)

1.5.2 Altitude:≤1000m (Special requirements, special design)

1.5.3 Air humidity

Relative humidity at average per day: ≤95%

Relative humidity at average per month: ≤90% (25℃)

Saturated vapor pressure at average per day: ≤2.2×10-3MPa

Saturated vapor pressure at average per day: ≤1.8×10-3MPa

1.5.4 Max. wind pressure: 700Pa

1.5.5 Thickness of the ice covered 10mm

1.5.6 Seismic intensity:

Horizontal acceleration: ≤0.3g

Vertical acceleration: ≤0.15g

1.5.7 Sunshine intensity: 0.1w/ cm2 (at wind velocity of 0.5m/s)

1.5.8 Max. daily temperature rise: 25℃

1.5.9 Keep the breaker away from places with combustible, explosive, corrosive materials and violent 

Manufacture Time: 4 Weeks