ZW8-12 intelligent vacuum circuit breaker (with recloser watchdog)

Intelligent vacuum circuit breaker (with recloser watchdog) Intelligent outdoor vacuum circuit breaker
The outdoor intelligent vacuum circuit breaker is a new product developed by our company based on the development of the power transformation and distribution industry and the needs of users.
This product is a new type of intelligent switch composed of a circuit breaker and an intelligent controller. It can be used as a recloser, sectionalizer, and circuit breaker, and is widely used in power transformation and distribution lines. It can be used independently in small and medium-sized substations and distribution stations to reduce floor space, save investment, and improve power supply reliability. Cooperating with other switching equipment, it can automatically cut off and isolate faults, automatically transfer power supply, and automatically restore power supply. Through the remote control device and the connection with the main control room system, four remote functions such as remote control, remote signaling, telemetry, and remote adjustment can be realized to realize power distribution automation.
Intelligent controller overview
Series automatic reclosing controllers (controllers for short) are comprehensive automatic control devices that integrate line protection, telemetry, remote control and remote adjustment. On the basis of meeting the national and ministerial standards, it adds line relay protection functions, local and remote control functions, four remote and computer communication functions.
, Scope of application
It can not only automatically eliminate the impact of transient faults on the line, but also isolate permanent fault sections.
The convenient four-remote communication function can realize various communication methods such as wired, optical fiber, microwave, carrier wave, and radio.
Can be applied to distribution automation systems of various sizes, such as county-level dispatching or distribution automation systems.
Intelligent controller function
After the backup power supply loses power, it can still work for hours.
Overcurrent protection Inverse time/definite time overcurrent protection, the overcurrent setting value can be set arbitrarily by the keyboard.
The quick-break protection value can be set arbitrarily by the keyboard.
Small current grounding protection function: fixed time limit small current grounding protection, the protection current can be set arbitrarily by the keyboard.
Reclosing function Multiple reclosing function, the number of reclosing times and the reclosing interval can be set arbitrarily by the keyboard.
The inverse time limit function provides fast and slow inverse time limit curves, which can realize automatic cooperation between upper and lower stations.
Closing lock function: When the switch is closed to the fault point, the controller automatically opens the switch and realizes closing lockout.
Sequential cooperation: When a fault occurs on the line in front of the recloser, it prevents unnecessary actions of the lower-level recloser from causing faults on the line of the lower-level recloser. The upper-level recloser can realize automatic fault interval isolation without breaking. .
The four-remote communication function has a standard communication interface that can be used with related equipment to achieve wireless, wired, optical fiber, microwave, carrier and other remote control.
Memory function The data of various settings are automatically entered into the memory unit and will not be lost.
The third-level protection is equipped with a power-on password, and only designated personnel can change the settings of the controller.
Limited-time quick-break protection. Limited-time quick-break protection. The limit-time quick-break value can be set arbitrarily by the keyboard.
Monitor network voltage and current, memorize the number of switching operations
, working power supply
) External power supply
) Use outdoor voltage transformer/