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Outdoor SF6 High Voltage Circuit Breaker AC 50Hz For Measurement And Protection
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Brand Name:Tianan Electric
Model Number:LW8-40.5
Certification:ISO9001-2000
Price:Pending
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:14000 PCS/year
Delivery Time:35 work days
Company Data
Verified Supplier
Contact Person
Lian Huanhuan
Business Type:
Manufacturer Exporter Trading Company Seller
Officials:
3/F, Building B7 , 999 Yangfan Road,High-tech Zone, Ningbo, China 315040
Quality:
Quality Certifitation Available
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Product Details
Company Profile
Product Details
Outdoor SF6 High Voltage Circuit Breaker AC 50Hz LW8-40.5
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 |
Company Profile
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,
- H. V. Load switch, fuse, current transformer (CT),
- 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.
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