Supplier Details

 

Year Established:2013

Business Type:

Management Certifiation:

  • 72.5-252KV SF6 circuit breaker

72.5-252KV SF6 circuit breaker

LW35-72.5/126/145/252 SF6 circuit breaker is designed with self-energizing theory that the arc generated in the interrupter is distinguished at a specified time with a part of energy from the arc itself. Please contact us! Email:

Product Details

Quick Details

Description


Email: liujing@mec.com.cn
Skype:liujingmec

 
LW35-72.5/126/145/252 SF6 circuit breaker is designed with self-energizing theory that the arc generated in the interrupter is distinguished at a specified time with a part of energy from the arc itself.
 
The circuit breaker is designed and manufactured in good accordance with IEC standards.
 
LW35-72.5/126/145 circuit breaker is either three-phase gang operation with a spring mechanism or single-phase operation with three spring mechanisms.
 
LW35-252 series circuit breaker is equipped with three spring mechanisms to realize single-phase operation or three-phase electrical gang operation.
 
1. Simple structure, high rated parameter
2. Spring mechanism, compactness
3. Easy installation, low noise, high reliability
4. Double sealing system is adopted to guarantee minimum SF6 annual leakage
5. Mechanical and electrical anti-pumping function.
6. Reasonable design, compact structure, no oil-leakage, maintenance-free, 10000 times mechanical endurance.
 
 
Item
Unit
LW35-72.5
LW35-126
LW35-145
LW35-252
Rated voltage
KV
72.5
126
145
252
Rated current
A
3150
4000
Rated frequency
Hz
50
Rated short circuit breaking current
kA
40
50
Rated short time withstand current (3s)
kA
40
50
Short line fault breaking current
kA
30/36
45/37.5
Rated peak withstand current
kA
100
125
Rated out-of-phase breaking current
kA
10
12.5
Rated line charging breaking current
A
10
31.5
50
160
Rated SF6 gas pressure (at 20℃)
Mpa
0.4
0.5
0.6
Main loop resistance
μΩ
40
45
60
Operation sequence
 
O-0.3s-CO-180s-CO or O-0.3s-CO-15s-CO
Mechanical endurance
Times
10000
SF6 gas leakagerate per year
%
1%
Moisture content (V/V)
PPm
150
Creepage
 
Across the open contacts
mm
2300
3950
3950
9400
To earth
mm
2300
3950
3950
7320
 

Company Profile

Our  Group was established in the end of the year 1997. It covers a land area of 400,000㎡and a building area of 120,000㎡ in Dalian, P.R. China.Our Group has more than 1400 employees including 296 technicians and 45 experienced senior engineers.
Mainly Independently develops and manufactures 0.22-35KV Dry type Instrument Transformer, 35-220KV Oil-insulated and Gas-insulated Instrument Transformer, 10-40.5 Vacuum Switch and ≤220KV classes of Composite Insulation Arrester. The products sales network covers all over the country and capacity occupies about 15% of the national market. Part of our products are also exported to many countries and regions in Africa, Asia, Middle East, South America, etc. Presently
We owns 580 sets advanced production equipments and 168 sets precise test instruments to build a good platform for independ innovation. Every year, dozens of new products come out and over 30 products got national patent. Our Group has acquired different honorary titles more than 50 items. We are sincerely looking forward to co-operating with domestic and overseas friends.
 

MEC

 

Post Buying Request

  • * Title:Please input title
  • * Message:Please input message
  • Your message must be between 20-8000 characters
  • * Your Email Address:Please input Email
  • Your email is also your login ID