252kV SF6 Circuit Breaker
Brief Description
LW35 serial circuit breakers, including LW35-72.5, LW35-126, LW35-145 and LW35-252 products, are
designed with self-energizing principle that arc generated in the interrupter is distinguished at a specified time
with a part of energy produced by the arc itself. They are used for making and breaking normal current, fault
current and switching lines to realize the operation (three-pole opening&closing operation and fast automatic-
reclosing operation), control and protection of power system.
Main Features
1 Less consumption of SF6 gas, benefitial for environmental protection. When other kinds of circuit breaker at
0.6 MPa must be filled with SF6 of 27 kg/set, this kind of circuit breaker only need 19.3 kg/set.
2 Dynamic sealing system adopts advanced Glyd ring and Step seal to reduce starting friction and prevent
leakage.
3 Adopt imported control valve of stable performance and anti-slow-opening function in case of pressure loss.
4 Two sets of independent opening control circuit are adopted in hydraulic mechanism with two sets of relay
protection to enhance service reliability.
Technical parameters:
| Specifications |
Unit |
Value |
| Rated voltage |
kV |
72.5 |
126 |
145 |
252 |
| Rated current |
A |
3150 / 4000 |
| Rated frequency |
Hz |
50/60 |
| Rated short-time withstand current (r.m.s) |
kA |
50 |
| Rated peak withstand current |
kA |
125 |
| 1 min power frequency withstand voltage (r.m.s) |
To earth/Between phases |
kV |
140 |
230 |
275 |
460 |
| Across isolating distance |
kV |
160 |
300 |
315 |
460 +(145) |
| Lightning impulse withstand voltage (peak) |
To earth/Between phases |
kV |
325 |
550 |
650 |
1050 |
| Across isolating distance |
kV |
375 |
650 |
750 |
1050 +(200) |
| Rated SF6 gas pressure ( 20ºC ) |
MPa |
0.5 |
0.5 |
0.5 |
0.6 |
| Rated SF6 annual leakage |
% |
≤0.5 |
Our advantages:
Quality Assurance
--From the very beginning, VILLE ensures quality in every step to achieve the best quality.
Experience Sharing
--With more than 30 years' experience in power industry, VILLE brings you an optimized solution.
Global Service
--Wherever you are, VILLE global network will support and provide you with value.
Quick Response
--In response to your needs without delay, VILLE knows the value of your time.
Packaging Details: The accessories packed in plywood cases,the main body in nude.
Our Best Service For You
1. Pre sale service
A. Make technical solution
B. Send quotation, technical data sheet and drawing
C. Prepare power transmission plan, testing plan,and shipment plan
2. In sale service
A. Supervise the manufacturing schedule totally in accordance with the plan
B. Send photos to customer during every manufacturing process(hold point)
C. Inform the customer one week before testing.
3. After sale service
A. Installation and commissioning, training the workers
B. Quick response within 12 hours any time
C. Provide 12 months gurantee period normally.
Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!
Audited Supplier 
){kind=link}
){kind=link}