Ningbo Tianan Group Co., Ltd. >> Circuit Breaker

Circuit Breaker

Circuit Breaker
Supplier: Ningbo Tianan Group Co., Ltd.
Price: US $ 1/Piece
Min Order: 1/Piece
Quantity::
Trade Terms: FOB,CFR
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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.ItemUnitParameter
1Rated voltagekV   72.5
2Rated power frequency withstand voltage (1 min )To earth /phase to phasekV160
Across switching device160+42
3Rated lightning impulse withstand voltageTo earth /phase to phasekV380
Across switching device380+59
4Rated frequencyHz5050/60
5Rated currentA3150
6Rated short-circuit breaking current Isc
31.5040
7Rated short-circuit making current (peak)
80100/104
8Rated short-time withstand currentkA31.5040
9Rated peak withstand currentkA80100/104
10Rated out-of-phase breaking currentkA810
11Short-line fault breaking currentkA90%Isc, 75%ISC
12Double earth fault breaking currentkA27.434.8
13Times of rated short-circuit breaking currenttimes2120
14Rated duration of short-circuits44
15First pole to clear factor
1.51.5
16Rated line charging breaking currentA1010
17Rated operation sequence
O-0.3s-CO-180s-CO
18Rated SF6 gas pressure/Gas refilling alarm pressure/Operation lockout pressure (gauge pressure, 20ºC)MPa0.4/0.36/0.320.4/0.36/0.32 or 0.7/0.65/0.60
19Annual leakage of SF6 Gas%≤0.5
20SF6 gas humidity content (L/l) ((20ºC)L/L≤150x10-6
21Mechanical enduranceTimes6000
22Opening timeMs≤30
23Close-Open timeMs≥70(when running)
24Creepage distanceAcross switching devicemm≥2585
To earth/phase to phase≥2248
25Weight of SF6 gas filled for one set of CBKg6  6/8
26Weight of one set of CB1300

 

 

 

 

 

 

 

 

 

Table 2  Major Technical parameters of mechanism
No.NameUnit     Data
1Energy-store motorNormal voltage rangV85%--- 110%
Rated voltage
DC220/AC220
Rated powerW720
2Storage time (at rated voltage)s≤20
3Rated voltage/current of opening coilV/ADC110V/4A, DC220V/2A
AC220V/5A
4Auxiliary
Switch
Rated currentA3(DC220V)/5 (DC110V)
Number of auxiliary contacts: normally opened/closedPair11/11
5Trip switchRated currentA3(DC220V)/5 (DC110V)
Number of auxiliary contacts: normally opened/closedPair2/2
6Capacity of terminal carry continuous currentA10
7Voltage of heater and lighting circuitVAC220
8Mechanical enduranceTimes10000

 

 

 

 

 

 







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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