Product Specifications
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Breaking Capacity: |
High Voltage Circuit Breakers |
| Operation: |
Manual Type |
| Speed: |
High-Speed Circuit Breaker |
| Arc-extinguishing Medium: |
SF6 |
| Installation: |
Fixed |
| Structure: |
ACB |
| Poles Number: |
2 |
| Certification: |
ISO9001-2000 |
Product Description
1.General
1.1 LW8-40.5 Outdoor HV SF6 circuit breaker is an outdoor HV electrical equipment of three-phase, AC, 50Hz and it's suitable for control and protection of power transmission and distribution system, it also can be used to tie circuit breaker and break/make capacitor bank, and also can attach circuit breaker in it for measurement and protection.
1.2 LW8-40.5 Outdoor HV SF6 circuit breaker adopts CT14 spring operation mechanism.
1.3 The circuit breaker meets the requirements of national standard : GB1984-89 AC High-Voltage Circuit breakers, and IEC56 AC High-Voltage Circuit breakers.
1.4 Main features of the Circuit breaker
a. Good breaking performance, short-time arcing time,
long electrical duration and with the ability of continuous breaking of 16 times under the rated voltage without change of SF6.
b. Reliable insulation, to be up to 40.5Kv/10min at gas pressure of zero point of meter.
c. High mechanical reliability, High making ability, frequent operation is available.
d. Without return while closing and opening capacitor bank of 400A.
e. Cut off long line of 25.50km and has no re-burn.
f. Simple structure, small size, long free time is no need to overhaul.
1.5. Application environment
a.Altitude to be not more than 1000m
b.Ambient temperature: -30ºC - + 40ºC, the average value of 24H to be not more than 35ºC;
c.Relative humidity: the daily average value to be not more than 95%, monthly average value to be not more than 90%,
d. Speed of wind: not more than 35km/s
e. Contamination condition to be III grade, porcelain bushing creepage distance shall be 1050 mm (nominal creepage ratio to be not less than 25mm/kV);
f. The ambient air should be free of the flammable material, explosive danger, chemical corrosive and intensive shake.
2. Main technical parameters
2.1 LW8-40.5 Circuit breaker main technical parameters to see table 1.
2.2 Assembly and adjustment parameters of circuit breaker to see table 2.
Table 1
| No. | Item | Unit | Parameter |
| 1 | Rated voltage | kV | 40.5 |
| 2 | Rated insulation level | 1min power frequency withstand voltage | kV | 185/215(fracture) |
| Lightning impulse withstand voltage | 95/118(fracture) |
| 3 | Rated current | A | 2000 |
| 4 | Mechanical endurance | time | 5000 |
| 5 | Rated pressure of SF6 gas(20ºC meter pressure) | Mpa | 0.45 |
| 6 | Locking pressure (20ºC meter pressure) | Mpa | 0.40 |
| 7 | Lowest ambient temperature | ºC | -30 |
| 8 | Rated short-circuit breaking current | kA | 31.5 |
| 9 | Rated short-circuit making current(peak) | kA | 80 |
| 10 | Rated short time withstand current(thermal current) | kA | 31.5 |
| 11 | Rated peak withstand current(dynamic current) | kA | 80 |
| 12 | Rated out-of-phase breaking current | kA | 7.9 |
| 13 | Breaking times of the rated short-circuit breaking current: | time | 16 |
| 14 | Close time | s | ≤0.1 |
| 15 | Open time | s | ≤0.06 |
| 16 | Rated operation sequence |
| O-0.3s-CO-180s-CO |
| 17 | Rated breaking/opening current of single capacitor group | A | 400 |
| 18 | Last time of short circuit current | s | 4 |
| 19 | SF6 leakage rate (yearly) |
| ≤1 |
| 20 | Moisture Content of SF6 gas(20ºC) | Ppm(v/v) | ≤150 |
| 21 | Rated operating voltage of spring operation mechanism |
|
|
| Voltage of closing and opening coil | V | AC 220, 380
DC:48, 110 , 220 |
| Voltage of energy storage motor | V | AC 220
DC 220 |
| 22 | Weight of SF6 gas | kg | 8 |
| 23 | Weight of circuit breaker (including operation mechanism) | kg | 1400 |
Table 2
| No. | Item | Unit | Technical Requirements | Test conditions and methods |
| 1 | Travel of movable contact | mm | 95±2 | Measurement of movable contact travel refer to darawing12 |
| 2 | Clearance between contacts | mm | 605±1.5 | Measurement of Clearance between movable and fixed contact refer to drawing 12a |
| 3 | Three-phase switch-on asynchrony | ms | ≤3 | Measurement of pole distance difference between movable and fixed contact refer to darawing14 |
| 4 | Three-phase switch-off asynchrony | ms | ≤2 | Measurement of pole distance difference between movable and fixed contact refer to drawing 15 |
| 5 | Resistance of main loop | μΩ | ≤120 | Measurement to DC voltage drop method, put in 100A |
| 6 | Speed at instant of contacts touching | m/s | 3.2±0.2 | Rated voltage and measurement method refer to drawing 14 |
| 7 | Speed at instant of contacts disconnecting | m/s | 3.4±0.2 | Rated voltage and measurement method refer to the drawing 15 |
| 8 | Cuisine stroke of making | mm | 10+0.5 -0.1 | Refer to drawing 6 under the closing status |
| 9 | positioning gap of Cuisine stroke of making | mm | 1-2 | Refer to drawing 6 under the closing status |
| 10 | Partial charging
40.5kV
25.7kV | PC | 20 | At rated gas pressure, use partial instrument to put 40.5kV between two outgoing wires for 1min, then drop to 25.7kV equably |
| PC | 10 |
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.
