Place of Origin：Zhejiang, ChinaBrand Name：AISO/OEMModel Number：LW8A-40.5Type：High Voltage, Outdoor High Voltage Circuit BreakerPoles Number：3Product：SF6 Circuit BreakerRated Voltage：40.5kVRated current：1600/2000ARated frequency：50HzMechanical life：10000TimesAltitude：≤2000mWeight：About1000KgCustomized：Accept special orderPort：Ningbo/ShanghaiPackaging Details：Standard export wooden case packingPort：Ningbo or Shanghai
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Application
Actastheprotectingandcontrollingunitforgridequipmentsandindustrialminingenterprises’equipments,LW8A-40.5 type outdoor SF6 circuit breaker is an outdoor device used in AC 50HZ three-phase 40.5KV power system.It is applicable to locations that need frequent operating in rated current or under repeatedly on/off short circuit current. Containing the current transformer for measurement and protection, it can directly replace SW2-35 less oil circuit breaker and various types of oil circuit breaker with transition bracket. It can also be used as a tie breaker and switching capacitor group situations with CT14 type spring mechanism.
Standards
GB1984
GB/T28001-2011 idt OHSAS18001:2007
GB/T24001-2004 idt ISO14001:2004
Features
Excellent breaking performance, short burning arc time, long life;
Mechanical life of more than 3000 times;
Operation frequently, each can be installed 12 current transformers;
New type SF6 MKZ pointer type density meter, pressure gauge reading is not affected by temperature changes;
Environmental Condition
Ambienttemperature:-30℃~+40℃
Altitude:≤3000m
Wind pressure:≤700Pa
Relative humidity:daily average relative humidity: ≤95%;monthly average relative humidity≤90;daily average saturated vapor pressure ≤2.2KPa;monthly average value ≤1.8KPa
Air pollution level:Ⅲ
Earthquake intensity:≤8 degree
The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution
Type designation
Main technical data
| No. | Item | Unit | Data |
| 1 | Ratedvoltage | KV | 40.5 |
| 2 | Ratedcurrent | A | 2000 |
| 3 | Ratedfrequency | HZ | 50 |
| 5 | Ratedshortcircuitbreakingcurrent | KA | 31.5 |
| 6 | Ratedshort-circuitcurrent(peak) | KA | 50 |
| 7 | Ratedshort-circuitwithstandcurrent | KA | 20 |
| 10 | Ratedshortcircuitclosingcurrent(peak) | KA | 50 |
| 13 | Electricallifeofratedshortcircuitbreakingcurrent | times | 30 |
| 14 | Ratedshortcircuitduration | s | 4 |
| 15 | Ratedlinechargingclosecurrent | A | 31.5 |
| 16 | Ratedoperationsequence | O-0.3s-CO-180s-CO | |
| 17 | Splittime | ms | ≤60 |
| 18 | Closingtime | ms | ≤100 |
| 19 | Velocityofrigidcomposite | m/s | 3.2 |
| 20 | Velocityofrigidity | m/s | 3.4 |
| 21 | Mechanicallife | times | 6000 |
| 24 | Qualityofeachcircuitbreaker | kg | 1400 |
Outline and installation
