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Do Better Performances in Demanding Duties
Yueqing Aiso gain client trust thanks to their proven reputation for reliability, performance and long life. Electrical equipment from Yueqing Aiso are available for original equipment manufacturers (OEM) to incorporate in their own installations or for use in repair, retrofit and upgrade projects.
Why Yueqing AIso?
1,Full engineering and technical support: 3 professional manufacturers, and technical service team.
2,Quality is No1 ,our culture.
3,Quickly lead times:”Time is gold” for you and for us
4,30min fast response:we have professional team,7*20H
Application
Actastheprotectingandcontrollingunitforgridequipmentsandindustrialminingenterprises’equipments,LW8-40.5 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
Main Technical Parameters
| Description | Unit | Data | ||
| Rated voltage | KV | 40.5 | ||
| Rated insulation level | Lightning impact withstand voltage(full wave peak) | 185/215(isolating break) | ||
| 1min power frequency withstand voltage | 95 | |||
| Rated current | A | 1600 | 2000 | |
| Meachanical life | Times | 3000 | ||
| Rated SF6 gas pressure(at 20℃) | Mpa | 0.45 | ||
| Self-locking pressure(at 20℃) | 0.45 | |||
| Lowest working ambient temperature | ℃ | -30 | ||
| Rated short circuit breaking current | KA | 25 | 31.5 | |
| Rated short circuit making current(peak) | 63 | 80 | ||
| Rated short withstand current(Thermal steady current) | 25 | 31.5 | ||
| Rated peak withstand current(dynamic steady current) | 63 | 80 | ||
| Rated out-of-phase breaking current | KA | 63 | 80 | |
| Duration of rated short circuit current | S | 4 | ||
| Closing time(at rated operating voltage) | ≤1 | |||
| Opening time(at rated operating voltage) | ≤0.07 | |||
| Rated operating sequence | (O)-0.3S-(CO)-180S-(CO) | |||
| Rated breaking/making sigle capacitor current | A | 400 | ||
| Nos of breaking rated short circuit breaking current | times | 15 | 10 | |
| Yearly gas leakege | %/years | ≤1 | ||
| Water content in SF6(at 20℃) | PPM(V) | ≤150 | ||
| Rated voltage of assembied spring operating mechanism | V | -220 | ||
| Voltage of closing coil, opening coil | AC:220 | |||
| DC:220 | ||||
| Voltage of charging motor | V | AC:220 | ||
| DC:220 | ||||
| SF6 Weight | KG | 8 | ||
| Breaking weight including operating mechanism | 1400 | |||
Service Environment
