Quick Details
Description
- Place of Origin: Zhejiang, China (Mainland)
- Brand Name: AISO/OEM
- Model Number: LW8-40.5
- Type: High Voltage
- Poles Number: 3
- Product: LW8-40.5 SF6 Circuit Breaker
- Rated Voltage: 40.5KV
- Rated current: 1600-2000A
- Rated frequency: 50Hz
- Standard: GB1984-89
- Mechanical life: 3000Times
- Customized: Accept special order
- Port: Ningbo/Shanghai
Application
Act as the protecting and controlling unit for grid equipments and industrial mining enterprises’ 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
Ambient temperature:-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
|
|
Yueqing City AISO Electric Appliance Co., Ltd located in Liushi Town, Wenzhou City, Yueqing City , Zhejiang Province.Industrial Zone,Liushi town is China's high and low voltage electrical appliances .
We have a wealth of experience in production and sales,we specialize in production of power Transformer, current transformer , Voltage transformer .Cuircuit Breaker ,Capacitor, fuse , load switch, lightning arrester and eletric equipments.
In addition, we have a good location advantage, and most manufacturers have more close contact, you can provide other electrical products, and according to your needs, customized products
The expanding trade company, customers all over the world, with a good reputation to get the trust of customers at home and abroad, to promote the modernization of our country, promote world economic and technological exchanges, enhance friendship with the people of all countries make a lot of positive work.
We sincerely hope that you and I work together to create. A better future!
