|Rated Voltage:||40.5kv||System Current:||400A-3150a|
|Function:||Control And Protection||Installation Location:||Power Plant|
|Rated Current:||400A-3150A||Operation Type:||Electric Or Manual|
|Life Span:||15 YEARS|
LW8A-40.5 SF6 Circuit Breaker,
3150A SF6 Circuit Breaker,
40.5kv SF6 Circuit Breaker
1. LW8A-40.5 Type 3 Phase 33kv 36kv 10.5kv SF6 Circuit Breaker
LW 8A-40.5(W)T2000-31.5 outdoor type SF6 breaker finds its universal range of application for the three-phases electrical system with alternating current 50HZ and the rated voltage 40.5kV.It is used for contolling and protecting the electrical system and measuring the current transformers.
2. Applicable place:
1.Power grid equipment.
2.Industrial and mining enterprise equipment.
Including current transformer for measurement and protection.It can directly replace SW2-35 oil less circuit breaker and various oil circuit breakers with transition bracket, and can also be used as contact circuit breaker and switch capacitor bank of CT14 spring mechanism.
1.It conforms to GB1984 standard,GB/T28001-2011 idt OHSAS18001:2007,GB/T 24001-2004 idt ISO14001:200;
2.Excellent fracture performance, short arcing time and long service life;
3.The mechanical life is more than 3000 times;
4.Frequent operation, each set can be installed with 12 current transformers;
5.The new sf6mkz pointer type densitometer, the pressure gauge reading is not affected by the temperature change.
4. Environmental Conditions
Ambient temperature: -30°C~+40°C
Relative humidity: ≤95%or≤90%
The daily average saturated vapor pressure: ≤2.2KPa;
The monthly average value: ≤1.8KPa.
Seismic intensity: ≤8
Air pollution level: Level Ⅲ
Wind pressure: ≤700pa
The installation shall be free from fire, explosion, severe vibration, chemical corrosion and serious pollution.
5. Technical Parameter
|Rated Insulate level||Power frequency withstand voltage(kV)1min||95|
|Thunder impulse withstand vltage (kV)||185|
|Rated short-circuit breaking current(kA)||25/31.5|
|Rated outof-phase breaking current (kA)||7.9/10|
|breaking current of earth fault in different phase(kA)||27.4/34.8|
|Rated breaking current of single capacitor bank(A)||400|
|Rated Operating sequence||O-0.3S-CO-180S-CO|
|Rated SF6 gas pressure(Mpa)||0.5|
|Switch-off time(on rated voltage)(ms)||30≤t≤40|
|Switch-on time(on rated voltage)(ms)||60≤t≤80|
|Rated short-circuit making current(peak) (kA)||63/80|
|Rated short-circuit duration (s)||4|
|Rated short-circuit with stand current (kA)||25/31.5|
|Rated peak value withstand current(kA)||63/80|
|Mechanical life (time)||10000|
Cumulative breaking times of rated short-circuit
breaking current 31.5 kA/40kA(time)
|Cumulative breaking times of rated current(time)||2000|
|Annual leakAge rate of SF6(%)||≤0.5|
|Water content of SF6(VV)(PPm)||≤150|
|Outer insulating leakAge ratio distance(mm/kV)||≥25,≥31|
|Weight of the circuit breaker(KG)||1000|
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2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.
3. Usually shipped by sea, small order or urgent order we can send you by air.
4. All our activities are accredited to ISO 14001:2015 and IEC standard.
5. Technology ensure the quality satisfy international request.