LW8 35kV SF6 Circuit Breaker
LW8 35kV SF6 Circuit Breaker
LW8 35kV SF6 Circuit Breaker

LW8 35kV SF6 Circuit Breaker

Model NO.
LW8-35
LW8-35 outdoor high-volt AC SF6 circuit breaker is applicable for outdoor 50Hz three-phase HV electric equipments and control & protection of 35kV power transmission & distributionsystem, as well as measurement and protection via the breaker enclosed current transformer. Breaker is also used for interconnected circuit breakers and switching capacitor banks. The breaker conforms to standards - IEC62271-100 & GB1984-2003.
Quantity:

LW8-35 outdoor high-volt AC SF6 circuit breaker is applicable for outdoor 50Hz three-phase HV electric equipments and control & protection of 35kV power transmission & distributionsystem, as well as measurement and protection via the breaker enclosed current transformer. Breaker is also used for interconnected circuit breakers and switching capacitor banks. The breaker conforms to standards - IEC62271-100 & GB1984-2003.

Structure and Features:
▪40kA break under rated voltage continuously for 20 times without maintenance or SF6 change.
▪The break could withstand 40.5kV for 10 minutes under relative pressure.
▪Reliable mechanical features, large closing capacity, and frequent operation.
▪Switch capacitor bank current 400A without arc reignition, for maximum 800A.
▪Charging line for 25 and 50km without arc reignition.
▪Simple structure, little volume, and long free-of-maintenance period

NAMEUNITDATA
Rated voltagekV35
Maximum voltagekV40.5
Rated insulation
level
Lightning impulse withstand voltage (Full-wave peak)kV200/215 (across open contact)
Power frequency withstand voltage (1min)kV95/118 (across open contact)
Rated currentA1600/2000  1600/2000/2500/3150
Mechanical endurancetime5000
Rated SF6 pressure (20℃ REL.)MPa0.400.50
Lockout pressure (20℃ REL.)MPa0.300.40
Minimum operation temperature-40-30
Rated short-circuit breaking currentkA20       2525     31.5
Rated short-circuit making current (peak)kA50       6363        80
Rated short-time withstand currentkA20       2525      31.5
Rated peak withstand currentkA50       6363         80
Rated out-of-phase breaking currentkA5       6.36.3          8
Total braking time under rated short-circuit breaking currenttime20
Closing time (under rated operation voltage)s≤ 0.1
Opening time (under rated operation voltage)s≤ 0.06
Rated operation sequenceO-0.3s-CO-180s-O
Rated switching single capacitor bank currentA400
Rated short-circuit durations4

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