220kv High Voltage Live Tank Circuit Breaker
| Price: |
US $ 20000/Piece |
| Trade Terms: |
FOB,CFR,EXW |
| Min Order: |
1/Set |
| Pay Type: |
L/C,T/T |
LW58-252/T4000-50 outdoor self-contained power high voltage SF6 circuit breaker is suitable for the electric power system of AC 50Hz and 252kV, which is the control and protection equipment for the electric power system, as well as for circuit breaker connection.
The product uses SF6 gas as the arc extinguishing and insulation medium, adopting the self-contained power arc extinguishing double action type interrrupter structure technique, equipped with new-tyoe spring operating mechanism, with features of strong switching ability, less opearting power, and high reliability, the technical inidcators have reached similar products in domestic and international advanced level.
Single phase SF6 circuit breaker, which is operated by one mechanism for one pole, is changed to three-phase mechanical linkage circuit breaker which is operated by one mechanism, The decrease of mechanism improves the linkage reliability for three phase SF6 circuit breaker to avoid lack of phase opeartion.
| Serial No. | Name | Unit | Value |
| 1 | Rated voltage |
| 252 |
| 2 | Rated power frequency withstand voltage (1min) |
|
|
| 2.1 | To earth | kV | 460 |
| 2.2 | Across open contact | kV | 460+146 |
| 3 | Rated lightning impulse withstand voltage |
|
|
| 3.1 | To earth | kV | 1050 |
| 3.2 | Across open contact | kV | 1050+206 |
| 4 | Rated frequency | Hz | 50 |
| 5 | Rated curent | A | 4000 |
| 6 | Rated short-circuit breakering current (Isc) | kA | 50 |
| 7 | Rated short-circuit making current (peak) | kA | 125 |
| 8 | Rated short-time withstand current | kA | 50 |
| 9 | Rated peak withstand current | kA | 125 |
| 10 | Rated duration of short-circuit | s | 3 |
| 11 | Rated out of phase breaking current | kA | 12.5 |
| 12 | Short-line fault breaking current | kA | 90%Isc,75%Isc |
| 13 | Rated operating sequence |
| o-0.3s-CO-180s-CO |
| 14 | Number of rated short-circuit breaking current | times | 20 |
| 15 | First pole to clear factor |
| 1.3 |
| 16 | Rated line charging making current | A | 200 |
| 17 | Rated SF6 gas pressure (20ºC gauge pressure) | Mpa | 0.6/0.7 (SF6+CF4) |
| 18 | Annual leakage of SF6 gas | % | ≤0.5 |
| 19 | Gas humidity content (L/L) (20ºC at handover) | L/L | ≤150x10-6 |
| 20 | Mechanical endurance | Times | 6000 |
| 21 | Opening time | ms | 30+/-5 |
| 22 | Closing -opening time | ms | ≤100 |
| 23 | Creepage distance | mm | ≥8660 |
| 24 | Weight of SF6 gas filled for each CB | kg | 10 |
| 25 | Weight of one set of CB | kg | 1800 |
| Prod Model: |
LW58-252 |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Breaking Capacity: |
High Voltage Circuit Breakers |
| Operation: |
Electric Type |
| Speed: |
Normal Type Circuit Breaker |
| Arc-extinguishing Medium: |
SF6 |
| Installation: |
Fixed |
| Structure: |
ELCB |
| Poles Number: |
3 |
| Certification: |
CCC |
Ningbo Tianan (Group) Co., Ltd. Was founded in 1969, is a national large
Enterprise, national key high-tech enterprise, industry key enterprises and Zhejiang provincial leading enterprise in power transmission and transforming
Industry. Under the company there are 1 R&D center, 10 specialized subsidiary
Companies, and more than 70 marketing offices. There are more than 2500 emplo--yee working in headquarter. The total asset sums up to 3.8 billion yuan (RMB).
The output value sums up to 5.0 billion yuan (RMB). Group competitiveness ranks in the first 225 in China's top 500.
Tianan Group is one of the domestic manufacturers and scientific research
Enterprises of power transmission and transforming industry featuring largest scale, most variety, full specifications, and best quality. Besides, the company owns abundant technical development strength, the international first-class production
And test equipments, efficient and flexible management mechanism, a great
Number of outstanding professional talents. "Quality is personality" is our concept. It has sufficient quality management system and quality assurance, all over the world's sales service network. All the above constructs excellent resources support system for customers.
Now the products include 126kV GIS combination apparatus, SF6 circuit breaker, 126kV&252kV power transformer, 252kV and below 252kV outdoor HV disconnecting switch and transformer, boxtype substation below 40.5kV, ring main unit
Switchgear, midmount switchgear, fixed switchgear, GIS, L. V. Switchgear, frequencyconversion switchgear, H. V. Load switch, H. V. &L. V. Circuit breaker, cable (RMU)
Branch box, fuse, current transformer (CT), dry-type & oil-immersed transformers,
High-voltage inverter speed regulation device, high-voltage static reactive power
Generator, active power filter, intelligent electric equipments, etc. 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.
Tianan has already obtained "China's well-known trademarks ", "China's brand
-name products ", "National Product Exempting from Inspection ". The ISO9001 quality guarantee system, the ISO14001 environment management system and
The OHSAS18001 occupation healthy safety control system through the national authentication, "CCC", "PICC" authentication certificate, which Tianan obtained comparatively early. The products cover all over the country and abroad five continental countries. Especially, our products applied to the Shenzhou V, Shenzhou VI,
Shenzhou VII manned spacecraft and the construction of Qinghai-Tibet railway. The practice has proved Tianan's products have the outstanding performance
That can withstand the test of bad environment.
In recent years, many prizes have been awarded to Tianan, such as: National May1st Labor Prize, National Innovation-based Pilot Enterprise, National Mechanical
Industrial Management Demonstration Enterprise, National Mechanical Industry
Civilized Company, Zhejiang Province "a group of five" key business, Province Quality Control Prize and so on. Chairman of the Board Jiang Baomin is the national model labor and the outstanding entrepreneur.
The "Tianan Electric town" which covers an area of more than 600, 000 square
Meters and RMB 1.2 billion has been invested has been put to use. To the end of 2011, Tianan has put it into an integrated, intellectualized and modernized
Enterprisewith the combination of scientific research, manufacturing, management and culture as "the aircraft carrier" in power transmission and transforming
Industry.
Seeing is believing, Tianan Group sincerely welcome all new and old customers
And friends come to our company for a visit or inspection.
