Quick Details
Description
Skype: liujingmec
liujing@mec.com.cn
General Description
LW10B column type SF6 circuit breaker including 252kV, 363kV and 550kV products, are used for making and breaking normal current, fault current and changing over of circuit, so as to realize the control and protection of power system.
Each pole of LW10B-252 circuit breaker has one break; LW10B-363 and LW10B-550 each consists of two breaks, whether including closing resistance or not is up to the requirement of different customers. For all of these three kinds of products, each pole is equipped with a hydraulic operation mechanism, which can make single pole operation and/or three pole electrically gang operation.
Complete and strict type tests have been done on these products, type test certificates have been issued by CESI, Italy and KEMA in Holand.
Main Features
1. High technical data
LW10B SF6 circuit breakers own big breaking capacity and good insulation. The interrupt, designed with advanced technology, can break 50kV short circuit current 26 times continuously without maintenance. LW10B-363/550 circuit breaker was successfully conducted all capacity tests in CESI, Italy. LW0B-252 circuit breaker can break 50kV short circuit current and fault current without capacitor.
2. Module design in operation system
Valve system of the hydraulic mechanism adapts module integration design with a small volume, which not only remains such characteristics of hydraulic mechanism as quick action, stable performance, low noise and no wearing etc., but also effectively prevents oil leakage.
3. Interchangeable ability of components and spare parts
Main body of circuit breaker is directly erected on the top of hydraulic mechanism, and the interrupter is standardized, so components and spare parts of the same rating and construction inside interrupter are strictly interchangeable.
4. Mechanism
LW10Bserious of circuit breakers are equipped with three kinds of hydraulic mechanism for end users’ choice, i.e. CY hydraulic mechanism made by PG, CYT hydraulic mechanism made by Pinggao with hydraulic valves exported from BUCHER, Switzerland , the key component of ABB mechanism, and ABB mechanism exported from ABB, Switzerland. LW10B-252 Type with CY hydraulic mechanism and BUCHER CYT hydraulic mechanism. LW10B-363 Type with BUCHER CYT hydraulic mechanism. LW10B-550 Type with BUCHER CYT hydraulic mechanism and ABB HMB-8 mechanism.
5. Reliable secondary component
Terminal blocks are Weidmuller or Phenix make. Pin-type SF6 gas destiny relay is convenient for the user to observe circuit breaker’s operation.
|
Item
|
Unit
|
Technical Data
|
|
LW10-252 (CY/CYT)
|
LW10B-363
(CYT)
|
LW10B-550 (CYT/ABB)
|
|
Rated voltage
|
kV
|
252
|
363
|
550
|
|
Rated frequency
|
Hz
|
50
|
|
Rated current
|
A
|
3150,4000
|
|
Rated short circuit breaking current
|
kA
|
40/50
|
63
|
63
|
|
Rated short line fault breaking current
|
kA
|
36/45
|
56.7
|
56.7
|
|
Rated out of phase breaking current
|
kA
|
10/12.5
|
15.75
|
15.75
|
|
Rated peak withstand current
|
kA
|
100/125
|
160
|
160
|
|
Rated short circuit making current (peak)
|
kA
|
100/125
|
160
|
160
|
|
Rated short time withstand current
|
kA
|
40/50
|
63
|
63
|
|
Rated duration of short circuit
|
S
|
3
|
|
Rated line charging breaking current (r.m.s)
|
A
|
160
|
500
|
500
|
|
Breaking time of rated short circuit current
|
times
|
20
|
|
Mechanical endurance
|
times
|
5000/1000
|
|
Rated SF6 gas pressure at 20 ℃
|
Mpa
|
0.4/0.6
|
0.6
|
0.6
|
|
SF6 gas moisture content (Ex-work)
|
PPM
|
≤150
|
|
SF6 gas leakage rate (per year)
|
％
|
≤1
|
|
SF6 gas weight (per pole)
|
kg
|
6 (without closing resistance)/10(with closing resistance)
|
12 (without closing resistance)/15(with closing resistance
|
20 (without closing resistance)/25(with closing resistance
|
|
Circuit Breaker weight (per pole)
|
kg
|
1600 (without closing resistance)/1800(with closing resistance
|
2530 (without closing resistance)/3180(with closing resistance
|
2840(without closing resistance)/3800(with closing resistance)
|
|
Operation force for opening/closing
|
kN
|
76/38
|
130/60
|
130/60
|
|
Terminal load
|
Longitudinal
|
N
|
2250
|
1500
|
2800
|
|
Horizontal
|
N
|
1768
|
1000
|
2400
|
|
Vertical
|
N
|
1250
|
1250
|
|
LW10B column type SF6 circuit breaker including 252kV, 363kV and 550kV products, are used for making and breaking normal current, fault current and changing over of circuit, so as to realize the control and protection of power system. Please contact us! Email: liujing@mec.com.cn
Liaoning MEC Group Co., Ltd. is located in China’s famous coastal Dalian city. The company is a comprehensive group, the business scope includes international project contracting, international trade and domestic trade, environmental engineering, e-commerce, real estate and property management, warehousing and logistics , and investment.
The group company was founded in 1994. Up to now, the average annual turnover is around 2.2 billion yuans, of which, the volume of import and export amounts for more than USD 250 millions. The company keeps business relations with several thousand firms and enterprises home and abroad.
All along with the development during the past twenty years, we never forget our responsibilities to the society. The company is persistent in providing supports to the public welfares, its year in year out public donation activities have won broadly recognitions from the social communities as well as governmental authorities.
We adhere, with the company’s good HR resources and scientific management models, the ideas of advance decision making, moderate operation, prudent management, sustainable development, and abide by the core values of being realistic, to create and to share. We do our best to provide our customers with added service.
