Product Specifications
| Prod Model: |
LW36 |
| 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: |
High-Speed Circuit Breaker |
| Arc-extinguishing Medium: |
SF6 |
| Installation: |
Fixed |
| Structure: |
ACB |
| Poles Number: |
2 |
| Certification: |
ISO9001-2000 |
Product Description
General
LW36-72.5 self energy outdoor HV AC sulfur hexafluoride circuit breaker is an outdoor three-phase porcelain
column electrical equipment mainly used in AC 50Hz or 60 Hz, 72.5kV electrical system in extremely cold regions
(for electric stations in general regions and -40C extremely cold regions).
Structural features
High performance: strong rated circuilating ability : strong short-circuit breaking ability at 3150A, -40degree 40kA
Long service life: electrical endurance 31.5kA X 21 times
25kA x 31 times
mechanical life: 10000 times
High reliablity: sharing the arc extingushing chamber structure with LW36-126, great product internal insulation
redundancy, overall cast aluminum alloy frame adopted for the spring structure, simple structure and high
reliablity, suitable for frequent operations.
Reliable breakeing performance
Reliable sealing performance: Annual leakage of SF6 gas less than 0.5%
Table of main parameters of circuit breaker
| No. | Item | Unit | Parameter |
| 1 | Rated voltage | kV | 72.5 |
| 2 | Rated power frequency withstand voltage (1 min ) | To earth /phase to phase | kV | 160 |
| Across switching device | 160+42 |
| 3 | Rated lightning impulse withstand voltage | To earth /phase to phase | kV | 380 |
| Across switching device | 380+59 |
| 4 | Rated frequency | Hz | 50 | 50/60 |
| 5 | Rated current | A | 3150 |
| 6 | Rated short-circuit breaking current Isc |
| 31.50 | 40 |
| 7 | Rated short-circuit making current (peak) |
| 80 | 100/104 |
| 8 | Rated short-time withstand current | kA | 31.50 | 40 |
| 9 | Rated peak withstand current | kA | 80 | 100/104 |
| 10 | Rated out-of-phase breaking current | kA | 8 | 10 |
| 11 | Short-line fault breaking current | kA | 90%Isc, 75%ISC |
| 12 | Double earth fault breaking current | kA | 27.4 | 34.8 |
| 13 | Times of rated short-circuit breaking current | times | 21 | 20 |
| 14 | Rated duration of short-circuit | s | 4 | 4 |
| 15 | First pole to clear factor |
| 1.5 | 1.5 |
| 16 | Rated line charging breaking current | A | 10 | 10 |
| 17 | Rated operation sequence |
| O-0.3s-CO-180s-CO |
| 18 | Rated SF6 gas pressure/Gas refilling alarm pressure/Operation lockout pressure (gauge pressure, 20ºC) | MPa | 0.4/0.36/0.32 | 0.4/0.36/0.32 or 0.7/0.65/0.60 |
| 19 | Annual leakage of SF6 Gas | % | ≤0.5 |
| 20 | SF6 gas humidity content (L/l) ((20ºC) | L/L | ≤150x10-6 |
| 21 | Mechanical endurance | Times | 6000 |
| 22 | Opening time | Ms | ≤30 |
| 23 | Close-Open time | Ms | ≥70(when running) |
| 24 | Creepage distance | Across switching device | mm | ≥2585 |
| To earth/phase to phase | ≥2248 |
| 25 | Weight of SF6 gas filled for one set of CB | Kg | 6 | 6/8 |
| 26 | Weight of one set of CB | 1300 |
| | | | | | | | |
Table 2 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. 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.
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