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ZW32-12fOverview of High-voltage Sectionalizing Circuit Breaker
ZW32-12FOutdoor AC high-voltage sectionalizing vacuum circuit breaker (commonly known as "watchdog", hereinafter referred to as sectionalizing circuit breaker) isa new intelligent product independently innovated and improved by Zhejiang Chuanlong Electric Co., Ltd..Zhejiang Chuanlong Electric specializes in the production of watchdog series vacuum circuit breakers,such as models,ZW32-12,ZW20-12,ZW8-12F.ZWHF-12,ZW43-12F,ZW7-40.5,ZW32-40.5,ZW10and other models. The watchdog sectionalizing circuit breaker of Chuanlong Electric,has single-phase grounding protection, zero-sequence protection, instantaneous overcurrent protection, and automatic reclosing functionsIt is used as a sectionalizing circuit breaker and section switch in the overhead distribution network of the feeder. The vacuum sectionalizing circuit breaker has a remote management mode, protection control function and communication function. It can reliably judge and detect the milliampere-level zero-sequence current and phase-to-phase short-circuit fault current within the boundary, and automatically cut off single-phase grounding faults and phase-to-phase short-circuit faults.
2.ZW32Functions and Applications of Sectionalizing Circuit Breaker
The sectionalizing circuit breaker is a multi-functional intelligent device integrating several switches such as vacuum circuit breaker, sectionalizing circuit breaker, and section switch.Its main configuration consists of the vacuum sectionalizing circuit breaker body,FDR type controller, external voltage transformer (Note: double-sided PT can be selected in the distribution network automation ring network line) consist of three major parts. The product is widely used as a sectional isolating switch and tie switch in the 10kV overhead ring network lines of urban and rural distribution networks. It is an automatic switch device that can implement load distribution of ring network lines. In the branch lines of large user power supply, it can be used as a boundary switch (commonly known as watchdog). It is used as a boundary circuit breaker and sectioner in the overhead distribution network of feeders. The vacuum boundary circuit breaker has a remote management mode, protection control function and communication function. It can reliably judge and detect the milliamperes-level zero-sequence current and phase-to-phase short-circuit fault current within the boundary, and automatically cut off single-phase ground faults and phase-to-phase short-circuit faults.
ThisZW32 boundary circuit breakerThe installation and operation manual of the boundary circuit breaker stipulates the referenced standards, operating environmental conditions, models and rated parameters, structural features, working principles, ordering instructions, as well as the methods of operation, installation, use and maintenance, etc.
III.ZW32 watchdogProduct features of the controller
The intelligent boundary circuit breaker controller is mainly used in conjunction with the boundary circuit breaker and installed at the liability boundary point of the overhead distribution line to protect the branch line and automatically cut off single-phase ground faults and phase-to-phase short-circuit faults of the line, ensuring the power consumption safety of non-faulty users.
The intelligent boundary circuit breaker controller has a cylindrical structure, with good functions of wind protection, moisture protection, dust prevention, earthquake resistance and anti-condensation; it has an ultra-wide operating temperature and can work reliably in an environment of -40 to 80℃; it uses a 16-bit high-speed single-chip microcomputer as the main control chip and a 12-bit ADPrecisequeSampling, fast calculation speed, and complete protection functions; all setting values are steplessly adjusted through a full-Chinese liquid crystal display, which is intuitive and clear; the controller is connected to the switch body through a control cable and an aviation connector, making installation convenient; it has a perfect wireless communication function, allowing users to remotely query the switch status and control the opening and closing of the switch. This product is widely applicable to the control and protection of 10kV~35KV overhead distribution lines in urban and rural areas and is an ideal device for supporting intelligent switch circuit breakers.
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