12kV 630A Automatic Vacuum Circuit Breaker Outdoor Substation 165kg

High Voltage Vacuum Circuit Breaker With Efficient Operation For Outdoor Substation Automatic Circuit Breaker

Product Description:

The ZW8-12 circuit breaker is designed to comply with international standards and is manufactured using advanced technologies. It has a rated voltage of 12kV, a rated current of up to 630A, and a short-circuit breaking current of up to 20kA.

The circuit breaker is composed of several key components, including the vacuum interrupter, operating mechanism, and control system. The vacuum interrupter is the heart of the circuit breaker and is responsible for interrupting the electrical current. It is designed to operate in a vacuum, which helps to prevent arcing and ensures reliable operation.

The operating mechanism is responsible for opening and closing the circuit breaker and can be operated manually or electrically. The control system monitors the circuit breaker and provides feedback to the operator, allowing them to monitor the status of the breaker and detect any faults.

The ZW8-12 circuit breaker is designed to be highly reliable and requires minimal maintenance. It has a long service life and is capable of withstanding harsh outdoor environments, making it suitable for use in a wide range of applications.

 
 
 
 Feature:

1.The ZW8-12 automatic vacuum circuit breaker is designed with anti-pollution ability. This means that it is capable of operating reliably even in environments with high levels of pollution, such as areas with heavy dust or industrial emissions. The internal insulation is designed to withstand such pollution and maintain the required insulation levels. Additionally, the circuit breaker utilizes air and epoxy resin composite insulation, which provides enhanced insulation properties and improves the overall performance of the breaker.
2.The circuit breaker is equipped with a missile energy storage operating mechanism. This operating mechanism stores mechanical energy that can be released rapidly to open or close the circuit breaker contacts. The missile energy storage mechanism is designed for efficient and reliable operation, ensuring quick and effective switching of the circuit breaker.
3.The ZW8-12 circuit breaker can be equipped with either a one-side (left side) or two-side separation switch. This allows for flexibility in the configuration and installation of the circuit breaker in the switchgear system. Additionally, it can be equipped with an external PT (Potential Transformer), which is used for voltage measurement and control purposes. The external PT facilitates accurate voltage monitoring and helps ensure the proper functioning of the circuit breaker in the high-voltage system.

 
 
Advantages:

1.CT23 Spring Energy-stored Operating Mechanism: The ZW8-12 circuit breaker is equipped with the CT23 type spring energy-stored operating mechanism. This mechanism utilizes stored mechanical energy in springs to facilitate the opening and closing of the circuit breaker contacts. It offers flexibility in operation, allowing for motorized or manual operation depending on the specific requirements of the application.

2.ZW8-12G Combined Breaker: The ZW8-12G model is a combined breaker that consists of the ZW8-12 circuit breaker and an isolator. This configuration enables it to function as a sectionalizer, providing the capability to isolate specific sections of a power distribution network for maintenance or fault identification purposes.

3.Three-Phase Assembled in a Tank Structure: The ZW8-12 circuit breaker features a three-phase assembled in a tank structure. This means that the breaker's components for each phase are enclosed within a common tank, providing a compact and space-saving design. The tank provides mechanical protection and enhances the overall robustness of the circuit breaker.

4.Vacuum Arc-Extinguishing Chamber and Insulation Material: Within the metal tank, the ZW8-12 circuit breaker incorporates a three-phase vacuum arc-extinguishing chamber. This chamber efficiently extinguishes electrical arcs that occur during circuit interruption. Additionally, the circuit breaker utilizes insulation materials, such as SMC (Sheet Molding Compound), to ensure insulation between phases and from phase to phase, enhancing its overall insulating strength.

5.Reliable Performance and High Insulating Strength: The ZW8-12 circuit breaker is known for its reliable performance and high insulating strength. It is designed and tested to meet stringent performance standards, ensuring dependable operation in various electrical conditions. The high insulating strength enhances the circuit breaker's ability to withstand and isolate electrical voltages, contributing to the safety and reliability of the electrical system.

 
 
 
Features:

Microcomputer protection function

1.It has a three-stage current protection function: fast trip, time-limited fast trip, and overcurrent protection.

2.Flexible setting of fast and slow timing characteristics.

3.Users can set protection values and delays.

Reclosing function

1.Up to three reclosing operations can be set.

2.Users can freely choose the number of reclosing operations and different reclosing intervals.

3.It has functions of acceleration before reclosure, acceleration after reclosure, and sequential coordination selection.

Network reconstruction function

1.Includes undervoltage trip lockout, automatic reclosing, short-time no reclosing, continuous no reclosing, undervoltage reclosing, automatic reset, short-time activation of standby protection value, and continuous activation of standby protection value.

2.Distributed intelligent control can be realized according to the pre-set function during ring network operation.

3.When a network fault occurs, it automatically clears the fault, isolates the fault area, transfers power automatically, and restores power to the non-faulty area.

Condition:

Ambient Temperature:-40℃~+70℃ (average daily temperature not exceeding +40℃)

Altitude:>1000m(max. 3000m)

Ambient Humidity:Average daily relative humidity not more than 95%, average monthly relative

Pollution level:Level IV

Speed of Maximum Wind:700Pa (equivalent to wind speed 35m/s)

Earthquake intensity: 8 level

 
 
 
Technical Parameter: