High Voltage Sf6 Circuit Breaker; Circuit Breaker for Substation

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: LW35-72.5, LW35-126, LW35-145, LW35-252
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Open Frame
• Structure: Conventional Circuit Breaker
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
• Certification: ISO9001-2000, CE, CB, CCC
• Voltage: 252kv
• Insulation Media: Sf6
• Current: 3150/4000A
• Transport Package: Wooden Cases
• Specification: iEC CE, ISO
• Trademark: VILLE
• Origin: Ningbo China
• HS Code: 85
• Production Capacity: 50000 Sets/Year

Product Description

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!