保定电气厂

本装置适用于3～35kV中压电力系统；

This device is suitable for the 3-35kv medium voltage power system;

■本装置适用于中性点不接地、中性点经消弧线圈接地或中性点经高阻接地的电力系统；

The device is suitable for electric power system that is grounded in neutral, neutral, or ground neutral, or neutral ground.

本装置适用于电缆线路为主的电网，电缆与架空线路的混合电网以及架空电网。

This device is suitable for power grid, cable and overhead line, and overhead power grid.

□装置的基本功能

The basic function of the device

当系统发生单相接地故障时，可在30ms左右将故障相直接接地，有效控制故障的进一步发展。

When the system has a single-phase earthing fault, the fault can be directly grounded in about 30ms, and the failure can be controlled further.

若是弧光接地，则立即熄灭电弧，将弧光接地过电压稳定在线电压的水平，可有效避免因单相接

If the arc is grounded, the arc is extinguished immediately, and the voltage of the arc is stabilized by voltage, which can be avoided by single phase

地引发的相间短路及因弧光接地过电压导致的避雷器爆炸事故；

The resulting phase of a short circuit and a lightning arrester explosion caused by a voltage caused by an arc light.

若是金属性接地，则可大大降低接触电压和跨步电压，有利于保障人身安全；

If the gold attribute is ground, it can greatly reduce the contact voltage and the step voltage, which is good for the safety of the person.

如果用于以架空线路为主的电网，则装置动作5s后真空接触器分闸，若是瞬时性故障，则系统恢

If the electric grid is used for the overhead circuit, the installation of the device of the vacuum switch will be divided into the rear of the 5s, and the system can be sure if it is a transient fault

复正常，若为永久故障则装置再次动作后不再分闸。

Normal, if it is a permanent failure, the device will not be divided again.

装置动作后，面板显示故障类型(金属接地或弧光接地)和相别，同时输出无源开关量接点信号。

After the device is moved, the panel shows the fault type (metal grounding or arc grounding) and the phase stop, and the output of the passive switch is shown.

当发生PT断线故障时，面板显示故障类型和相别，装置输出接点信号，以便用户对有可能因PT

When the PT fault line fails, the panel displays the type of the fault and the phase, and the device outputs the contact signal so that the user may be able to cause the PT

断线导致误动作的继电保护进行闭锁。

The broken line causes the relay protection of the wrong action to be closed.

装置可将发生在相与相之间和相与地之间的各种过电压限制在3.5倍左右，装置动作后可将弧光

The device can limit the voltage between the phase and phase of the phase and the phase to about 3.5 times, and the device will be able to turn the arc

接地过电压限制到线电压的安全水平。

The grounding voltage is limited to the safety level of the line voltage.

装置配置RS485接口，可按照用户提供的通讯规约进行数据远传。

The device configures the RS485 interface, which can be transmitted according to the user's communication specifications.

本装置中的电压互感器可以向计量仪表和继电保护提供电压信号，可取代常规的PT柜。

The voltage transformer in this device can provide voltage signal to metering instrument and relay protection, which can replace the conventional PT cabinet.

本装置具有事故追忆功能，可记录l8次事件发生的时间和装置动作状态。

This device has the function of accident recall, which can record the time and device action status of l8 events.