The outdoor vacuum circuit breaker ZW7-40.5 is a high-tech electrical device in medium voltage. This three-phase AC circuit breaker, operating at a frequency of 50 Hz, is for outdoor application. It is ideal for power transmission and distribution systems with voltage ratings ranging from 20 kV up to 40.5 kV. Its versatility extends to applications such as section circuit breakers and switched capacitor banks, proving its adaptability in various electrical environments. What makes the ZW7-40.5 unique is its full compatibility with advanced control systems. For the circuit breaker, a piecewise controller can be combined for intelligent sectioning and reclosing control of the power system. Also, the possibility of equipping it with a current transformer extends its function towards measurement and protection, making it indispensable in any high-voltage electrical infrastructure.
Key Features of the ZW7-40.5
Another, not the least, is the desirable features of the ZW7-40.5 outdoor vacuum circuit breaker:
A. Excellent Breaking Performance
From the discussed characteristics of the ZW7-40.5, it has an excellent breaking performance. The arc technology used in the vacuum inside this breaker allows high breaking capacities; hence, this can bear high electrical loads without breaking. This attribute is highly important for system stability during faults.
B. Life and Maintenance – Mechanical
It should be noted that ZW7-40.5 has a rating for mechanical life of up to 10,000 operations, hence it will be robust and durable in those heavy operational demands. This circuit breaker is maintenance-free, and this therefore translates into economical operational costs, reduced downtime for the operator. The long maintenance cycles it has also make it more attractive since operators can concentrate on other critical aspects of their electrical systems without considering its frequent upkeep.
C. Insulation Performance
Good insulation performance is vital for any high-voltage equipment; in this respect, too, the ZW7-40.5 proves very impressive. It possesses excellent anti-pollution ability so that, in case of environmental pollutants, they do not further deteriorate its operation or safety. This trait becomes all the more valuable because such an arrestor would find wider application in outdoor installations where various weather conditions could affect equipment performance.
D. Options for Customization
The ZW7-40.5 can be customized for particular customer needs including mounting of current transformers offering accuracy classes of measurement up to 0.2%. This enables better three-phase interfacing and allows for further improvement in the power system monitoring capability.
E. Robust Actuating Mechanisms
This outdoor vacuum circuit breaker can be equipped with either a spring or electromagnetic actuator; both of them can assure reliable mechanical performance in the case of frequent operation. The design minimizes risks associated with fire and explosions, making it safe for deployment in various applications.
Operating Conditions
The intention is to ensure that the ZW7-40.5 will operate within the following environmental parameter conditions:
Temperature Range
The ambient temperature range within which the circuit breaker can operate with good efficiency is from -30℃ to +40℃. Such a wide range of temperature tolerance makes it operate reliably in diverse climates-from freezing cold to hot-with consistent performance throughout its operational life.
Altitude Considerations
The ZW7-40.5 could be used at as high as 1000 meters above sea level with no loss of its functionalities. This altitude capability provides feasibility for deployment in most geographical locations.
Wind Pressure Resistance
Wind pressure can be one serious obstacle for outside-situated electrical equipment. However, the ZW7-40.5 series is designed to stand wind pressure no higher than 700 Pa, which corresponds to the wind speed of about 34 m/s, or about 76 mph. Such stability withstands even the most unfavorable weather conditions.
Pollution Levels
The operation of the circuit breaker is designed to be efficient in ambient situations categorized as an IV class by the IEC standards, showing the levels of air pollution. Such categorization indicates that it should work with ease in cases of moderate pollution without degradation in performance.
Seismic Resistance
In those regards, the ZW7-40.5 is designed to resist seismic activity in many regions with its capacity to withstand up to an 8-degree earthquake intensity on the Richter scale. It does add another layer of reliability for the operation of the circuit breaker during seismic events.
Ice Thickness Tolerance
The ZW7-40.5 shall operate satisfactorily in areas of high ice accumulation provided the thickness of such ice does not exceed 10 mm. This capability ensures that ice does not impede its functionality during winter months or in icy climates.
IEC Compliance
The ZW7-40.5 circuit breaker is designed to completely conform with IEC 62271-100, which provides the global standard specifications on high-voltage switchgear and control gear. Compliance in such cases means that indeed a circuit breaker complies with such strong safety and performance standards, very important in high voltage applications.
Importance of Compliance by IEC
Conformity with the IEC standard ensures the quality of the product and extends its safety and reliability for use in a wide scope. Adherence to standards positions the manufacturer better in the market, since customers are more confident in product performance and safety.
Key Testing Procedures
Several key testing procedures have been performed to ensure conformance to the IEC 62271-100:
- Dielectric Tests: These tests determine the insulation capabilities of a circuit breaker against voltage surges.
- Temperature Rise Tests: These tests determine whether the device operates within a reasonable temperature without overheating when under load conditions.
- Short-Circuit Breaking Tests: The tests that shall determine the capability of the circuit breaker to interrupt fault currents effectively.
- Mechanical Endurance Tests: Tests to determine the number of operations the device can carry out before mechanical failure occurs.
Applications of the ZW7-40.5
The versatility in the ZW7-40.5 extends its applications across many sectors, namely:
I. Power Transmission and Distribution Systems
The major application of an outdoor vacuum circuit breaker is within voltages from 20 kV to 40.5 kV in the power transmission and distribution systems. It is also very crucial in such applications because it has substantial load-bearing capacity while still ensuring safety.
II. Section Circuit Breakers
Apart from power transmission, it could also be used as a section circuit breaker: it allows operators to isolate sections of a network for maintenance or fault management without disrupting general system operations.
III. Switched Capacitor Banks
The circuit breaker is suitable for use with switched capacitor banks, which in turn increases the efficiency of reactive power management in electrical networks and improves the overall efficiency of the system.
The Future of Outdoor Circuit Breakers
The ZW7-40.5 outdoor vacuum circuit breaker is tough and can stand very rugged medium-voltage applications across diversified industries. Fitted with excellent breaking performance, reliable mechanical life, maintenance-free operation, and conformed to the international standard such as IEC 62271-100, this circuit breaker avails unmatched reliability and efficiency in power management systems. On the other hand, the ZW7-40.5 would be recommended for investment by business enterprises to improve electrical infrastructure with high quality equipment designed for modern demands while offering safety and reliability.
For inquiries on how to procure or integrate the ZW7-40.5 outdoor vacuum circuit breaker into your electrical systems, please feel free to contact CNC Electric at cncele@cncele.com or call +86-577-61989999 during business hours: every Monday to Saturday from 9 AM to 6 PM. With over three decades of manufacturing experience in industrial electrical appliances, CNC Electric remains at the forefront of providing innovative solutions to meet customer needs in various sectors.
Media Contact
Company Name: CNC ELECTRIC GROUP CO.,LTD.
Email:Send Email
Phone: 86-577-61989999
Address:CNC High-Tech Hutou Industrial Zone, Liushi Town
City: Yueqing
State: Wenzhou
Country: China
Website: https://www.cncele.com/
