Where are overhead line fault indicators installed?

1、The fault indicator is a device used to indicate short circuit and earth fault in distribution lines. It is installed on overhead lines and mechanically fixed to one phase of a bare conductor or insulated conductor. It is called an overhead line fault indicator.

Overhead line fault indicators usually consist of three fault indicators (FCI) and one DCU. When indicating locally, the fault indicator is usually used independently.

2、Overhead line installation

Four-Faith JYZ series overhead line fault indicators, they have adaptive function, they select the trip threshold according to the line load current, the indicators use red and yellow, green LED indicators and their flashing patterns to identify permanent faults and transient faults as well as ground faults, they can improve system reliability and recovery speed, you can apply JYZ series fault indicators to distribution systems up to 69 kV. They are usually installed in the following places：

1） Installed in the middle section and branch entrance of long lines, it can indicate the

line fault section and fault branch.

2） Installed at the substation exit, it can determine whether the fault is caused by the

user.

3）Installed at the user's distribution transformer incoming line, it can determine

whether the fault is caused by the user.

4） Installed at the connection between the cable and the overhead line, it can

distinguish whether the fault is in the cable section

5）The installation density can be increased on high-prone fault lines, for example 200-

300m (installed in groups of 3 poles)

Four-Faith Smart Power provides a complete set of remote monitoring solutions for fault indicators, providing users with reliable and fast detection equipment for public utility power network fault detection and recovery, and supports the access of micro SCADA to meet the current growing automation needs.