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Outdoor high voltage intelligent demarcation
vacuum circuit breaker (watchdog)
ZW32-12F 户外高压智能分界真空断路器 ( 看门狗 )

概述 /Overview

12kV 架空配电线路 T 接支线路或末端用户内部发生故障时，因其进线开关保护动作时限
与变电站出线开关保护时限配合无法合理整定时，将会造成变电站出线开关跳闸。如果故
障性质是永久性的，变电站重合将不成功，则一个中压用户界内的局部事故将使整条 12kV
配电线路停电。如若在 T 接处或用户端 ( 责任分界点 ) 安装一台户外分界断路器，经过判
断确认用户界内发生故障 ( 过流、短路、单相接地等故障 )，自动将故障隔离，则可以确保
非故障区用户正常用电。ZW32-12F 户外高压智能分界真空断路器 ( 看门狗 ) 在 12kV 馈
电架空线路上的应用可避免无故障线路的连带性事故停电、缩小故障停电范围、缩短用户
停电时间、保护主网的安全运行。并具备故障检测功能，保护控制功能和通讯功能，可实
现自动切除单相接地故障和自动隔离相间短路故障。安装点使用与 12kV 配电线路用户进
线的责任分界点处，也可以适用于符合要求的分支线连接处。
When the 12kV overhead distribution line T is connected to the branch line or the
internal user fails, the timing of the line switch protection action and the substation
outlet switch protection time limit cannot be properly adjusted, which will cause
the substation outlet switch to trip. If the nature of the fault is permanent and the
substation coincidence will not be successful, a local accident within the medium
voltage user community will power down the entire 12kV distribution line. If
an outdoor junction breaker is installed at the T junction or the customer end
(responsibility demarcation point), it is ensured that the failure (overcurrent, short
circuit, single phase grounding, etc.) in the user boundary is determined and the
fault is automatically isolated. Users in non-faulty areas use power normally. The
application of ZW32-12F outdoor high-voltage intelligent demarcation vacuum circuit
breaker (watchdog) on 12kV feeder overhead line can avoid the power failure of
the fault-free line, reduce the power failure range, shorten the power outage time,
and protect the safety of the main network. run. It also has fault detection function,
protection control function and communication function, which can realize automatic
cut-off single-phase ground fault and automatic isolation phase-to-phase short
fault. The installation point uses the responsibility demarcation point for the user
incoming line of the 12kV distribution line, and can also be applied to the branch line
connection that meets the requirements.

型号含义 /Model meaning

Z W 32 - 12 F G / □ - □

额定短路开断电流 (kA)/Rated short-circuit breaking current (kA)
额定电流 (A)/Rated current (A)
带隔离开关 /With isolation switch
分界开关 /Demarcation switch
额定电压 (kV)/Rated voltage (kV)
产品设计序号 /Product design serial number
户外 /Outdoor
真空断路器 /Vacuum circuit breaker

使用环境 /Use environment

● 环境温度：不高于 +40℃，不低于 -40℃； ● Ambient temperature: no higher than +40℃ , not lower than -40℃ ;
● 空气相对湿度：日平均值不大于 95%, 月平均值不大于 90%； ● Relative humidity of air: the daily average is not more than 95%, and the monthly
average is not more than 90%;
● 海拔高度不超过 2000 米； ● The altitude does not exceed 2000 meters;
● 风压不超过 700Pa( 相当于风速 34m/s)； ● The wind pressure does not exceed 700Pa (equivalent to a wind speed of 34m/s);
● 地震烈度不超过 8 级； ● The intensity of the earthquake does not exceed 8;
● No fire, explosion, serious pollution, chemical corrosion and severe vibration.
● 无火灾、爆炸、严重污秽、化学腐蚀以及剧烈震动的场所。

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