Circuit Breaker

Self-compression circuit breakers
252kV SF6 Circuit Breaker
MODEL: LW10B-252
VOLTAGE: 252KV
Circuit Breakers for 72.5 kV up to 800 kV
Circuit breakers are the central part of AIS and GIS switch-gear. They have to meet high requirements in terms of: Reliable opening and closing Consistent quenching performance with rated and short-circuit currents even after many switching operations High-performance, reliable, maintenance-free operating mechanisms. Technology reecting the latest state of the art and years of operating experience are put to use in constant further development and optimization of Siemens circuit break-ers. This makes Siemens circuit breakers able to meet all the demands placed on high-voltage switchgear.
The comprehensive quality system is certied according to DIN EN ISO 9001. It covers development, manufacturing, sales, commissioning and after-sales service.
Circuit breakers for air-insulated switchgear are individual components, and are assembled together with all indi-vidual electrical and mechanical components of an AIS installation on site.
Due to the consistent application of a modular design, all Siemens circuit breaker types, whether air-insulated or gas-insulated, are made up of the same range of compo-nents based on our well-proven platform design (g. 1): Interrupter unit Operating mechanism Sealing system Operating rod Control elements.
The principle of the operating mechanism with charging gear and latching is identical on all types (g. 3, g. 4). Differences between mechanism types are in the number, size and arrangement of the opening and closing springs. Main features at a glance: Uncomplicated, robust construction with few moving parts Maintenance-free Vibration-isolated latches Load-free uncoupling of charging mechanism Easy access 10, 000 operating cycles.

TYPE
Rated voltage	KV	72.5	123	145	170	245	300	362	420	550	800
Number of interrupter units per pole		1					2                     4
Rated power-frequency withstand voltage/min	KV	140	230	275	325	460	460	520	610	800	830
Rated lightning impulse withstand voltage/min	KV	325	550	650	750	1050	1050	1175	1425	1550	2100
Rated switching impulse withstand voltage/min	KV	-	-	-	-	-	850	950	1050	1175	1425
Rated normal current, up to	KV	4000	4000	4000	4000	4000	5000	5000	5000	5000	5000
Rated short-time withstand current  (1 s - 3 s), up to [kA (rms)]		40	40	40	40	50	40	63	63	63	63
Rated peak withstand current, up to		108	108	108	108	135	108	170	170	170	170
Rated short-circuit breaking current, up to		40	40	40	40	50	40	40	40	40	40
Type of operating mechanism		Stored-energy spring mechanism

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.