
110kV 126kV High Voltage Circuit Breaker 3150A - 40kA Sf6 Circuit Breaker
Product Description
LW39-126 type circuit breaker is a high performance new type HV SF6 circuit breaker. Based on sufficient absorbing and digesting advanced technology of foreign SF6 circuit breaker and requirement of national standard, It combining domestic commercial manufacture level and design. This product is used in electric system with 50Hz, 110kV system nominal voltage, which is main electrical equipment controlled and protected by power station and substation.
Serial No. | Name | Unit | Value |
1 | Ambient temperature | ºC | -50ºC-40ºC |
2 | Rated voltage | KV | 126 |
3 | Rated power frequency withstand voltage (1min) | ||
3.1 | To earth | kV | 230 |
3.2 | Across open contact | kV | 230+73 |
4 | Rated lightning impulse withstand voltage | ||
4.1 | To earth | kV | 550 |
4.2 | Across open contact | kV | 550+103 |
5 | Rated frequency | Hz | 50 |
6 | Rated value | A | 3150 |
7 | First pole to clear factor | 1.5 | |
8 | Rated short-circuit breakering current (Isc) | kA | 40 |
9 | Rated short-circuit making current (peak) | kA | 100/104 |
10 | Rated hsort-time withstand current | kA | 40 |
11 | Rated peak withstand current | kA | 100/104 |
12 | Rated duration of short-circuit | s | 4 |
13 | Rated out of phase breaking current | kA | 10 |
14 | Short-line fault breaking current | kA | 90%Isc,75Isc |
15 | Rated line charging breaking current | A | 31.5 |
16 | Rated operating sequence | o-0.3s-CO-180s-CO | |
17 | Resistance of main contact | μΩ | ≤35 |
18 | Rated SF6 gas pressure (20ºC gauge pressure) | Mpa | 0.6 (or SF6+CF4) 50Hz |
19 | Alarm/ minimum functional pressure (20ºC gauge pressure) | Mpa | 0.55/0.50 50Hz |
20 | Annual leakage of SF6 gas | % | ≤0.5 |
21 | Gas humidity content (L/L) (20ºC at handover) | L/L | ≤150x10-6 |
22 | Mechanical endurance | Times | 10000 |
23 | Radio interference level | mv | ≤500 |
24 | Creepage distance | mm | 3906 |
25 | Weight of SF6 gas filled for each CB | kg | 8 |
26 | Weight of one set of CB | kg | 1700 |
Major Technical parameters of mechanism
No. | Name | Unit | Data | ||
1 | Energy-store motor | Normal voltage rang | V | 85%--- 110% | |
Rated voltage | DC220/AC220 | ||||
Rated power | W | 720 | |||
2 | Storage time (at rated voltage) | s | ≤20 | ||
3 | Rated voltage/current of opening coil | V/A | DC110V/4A, DC220V/2A | ||
AC220V/5A | |||||
4 | Auxiliary Switch | Rated current | A | 3(DC220V)/5 (DC110V) | |
Number of auxiliary contacts: normally opened/closed | Pair | 11/11 | |||
5 | Trip switch | Rated current | A | 3(DC220V)/5 (DC110V) | |
Number of auxiliary contacts: normally opened/closed | Pair | 2/2 | |||
6 | Capacity of terminal carry continuous current | A | 10 | ||
7 | Voltage of heater and lighting circuit | V | AC220 | ||
8 | Mechanical endurance | Times | 10000 | ||
Ningbo Tianan (Group) Co.,Ltd.
Ningbo Tianan (Group) Co, Ltd is a famous leading influential enterprise of the power transmission equipment manufacturing in China.It was founded in 1969,currently under the group, we have 1 national-level R&D center, 2 provincial-level R&D center, 10 professional companies, 70 sales offices, and its total asset is 4.2 billion Yuan, over 3500 employees.
As an outstanding representative of Chinese-made, our enterprise is in the steady development and growth in the tide of reform and opening up.
In1976,our production mode transforms from Labour products to the manufacturing process;
ln1982,the Xiangshan local state- owned high-voltage electric factory was founded,we start the professional development of electrical apparatus ;
In1994,we reorganized and established joint- stock company, enngraver to be an international group ;
In 2005, our group ranked the No. 225 in competitiveness of China's top 500;
According to national development,we expand five major industrial, such as the high voltage apparatus, renewable energy equipment, intelligent grid and rail transit equipment,and magnetic gear in order to achieve the business strategic abjectives.
Over these years, our company stand for independent innovation and to build low-carbon economic development
model.Annual R & D expenses accounted for more than 5% of
corporate sales.We have mastered the core technology of
transformation and distribution equipment and core self-supporting
ability long since.Our self- developed prefabricated substation,
ring main unit, load switch, wind power switchgear, inelligent grid
systems and many other products achieved the international advanced
level,By the way, we are the one of the companies who draft the
national standards about that.
Tianan has the certification and honour involves China famous
brand,China top brand,National inspection- free products and
ISO9001 quality system, IS014001 environmental management system,
OHSAS 18001 occupational health and safety management system. the
inspection measurement and certification system and
"CCC","PCCC",etc.Also we equipped with business efficient and
flexible management mechanism, large number of outstanding
professionals, first-class production and testing equipment,
high-level research and development strategy, Quality is the
character" concept, perfect quality management system and quality
assurance,sales and marketing network all over the
country,which forms to provide customers with excellent
support system of resources.
The products are widely used in nuclear power plant, chemical plant, railway, underground, Airport, national defense, Beijing Olympics and main national, provincial and municipal construction projects. Whether in the Shenzhou spacecraft launching base,the Sanxia power plant, Qinghai-Tibet railway, Qingshan nuclear power station, or domestic subway, Olympic venues. International airport. wind farms and so on.Our projects applied in more than 30 countries and regions all over the world. Our main products includes
- 126kV&252kV power transformer,resin-Cast Dry-type & Oil-immersed Power transformer,Combined transformer
- 252kV and below 252kV outdoor HV disconnecting switch and transformer,
- Boxtype substation below 40.5kV,Prefabricated substation and cable (RMU)branch box
- High Voltage &Medium Voltage&Low Voltage switchgear
- Ring main unit switchgear, mid-mount switchgear, fixed switchgear, GIS switchgear,frequency conversion switchgear,
- 126kV GIS combination apparatus,
- SF6 circuit breaker,Vacuum circuit breaker ,H. V. &L. V. Circuit breaker,
- High-voltage inverter speed regulation device, high-voltage static reactive power Generator, active power filter, intelligent electric equipments, etc.
Seeing is believing, Tianan Group sincerely welcome all new and old customers and friends come to our company for a visit or inspection.