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ZW7-40.5 type of outdoor high voltage vacuum circuit breaker is three-phase ac frequency 50 Hz, rated voltage of 40.5 kV outdoor high voltage switch equipment.

Circuit breaker meet the national GB1984 the high-voltage ac breaker "and professional standard JB3855" 3.6~40.5 kV voltage vacuum circuit breaker outdoor exchange "and relevant IEC standard. For industrial enterprise, power plants and substation of electrical equipment for control and protection with, and applies to frequent operation place. Circuit breaker has repeatedly open circuit and fast reclose ability.

Features:

1. The breaker is adopted the vacuum interruption and has strong ability of closing and long life time. This mechanical life reaches 10000 times.
2. The structure is simple and maintenance-free. It also has long period of no-overhauling
3. It has the characters of good insolating ability and strong stain removal ability.
4. Spring and magnetic control mechanism can be configured. Mechanical energy is reliable and can be used frequently. There is no hidden trouble of fire and bombing.
5. Inside, mutual inductor of which measuring accuracy reaches level 0.2  is installed.
6. There is condensation controller inside, which can protect the breaker to operate under the condition of certain temperature and humidity.

Using environmental condition

1. The altitude above sea level does not over 2,000 meters;
2. Surrounding air temperature: -40 ℃~+40 ℃;
3. The wind speed is not bigger than 34m/s;
4. The air filthy should be with in Ⅲdegree (pollution level, level 3)
5. Installing places: Not flammable, the explosion hazard, chemistry corrode place;
6. Does not have the regular fierce vibration

This product has the main advantages:

• good sealed performance,
• anti-aging,
• high-aging,
• high-voltage resistant,
• non-combustion,
• non-explosion,
• long age limit,
• convenience for installation and maintenance.

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