Overhead line fault indicator

Self-sustain

Short-circuit fault detection

The indicator is made with new material and special circuit designed. When the wire load current is greater than 10A, it begins to get the power from the wire. When the wire load current is greater than 30A, it can work normally without the lithium battery totally.

We use quick break over-current two-stage current or adaptive load current flow mutation current protection principle, and line running status detection, it can effectively inhibit the closing and reclosing inrush current and feedback to send electrical misoperation (the parameters should be confirmed according to customer requirements before delivery).

Ground fault detection

Indication

It can monitor the mutational increment of the grounding current.

The indication is done by three flashing LEDs for a clear visibility and three red display areas by motor for a clear daytime visibility.

Single-flashing means ground fault indication; double-flashing means short-circuit fault indication.

Reset mode

Current and voltage measurement

1,1~48h timing reset(can be set before delivery, default 24h)

2,Intelligent reset(auto-reset after finish the emergency repair and restoring power transmission).

Real-time monitoring of line load current, wire-to-ground voltage induction, instead of using current transformers and live displays.

Live mounted and removal

Antirust design

The indicator can be mounted under live conditions with the help of an adapter and a hot stick.

The tension discs are made of high quality nylon material. The groove springs are made of stainless steel so that they won’t melt with the wire. The thread jamming structure parts are made of stainless steel and with antirust design.

Anti refuse operation design

Anti misoperation design

We adopt large cross-section design of magnetic circuit, it has good permeability performance, accuracy measurement and high sensitivity. They can be very sensitive no matter in the rural power line small load current or small mutations conditions or in the city network line two phase short circuit or slow flow conditions.

It has anti misoperation design, when the inrush current occurs after the non-loading line is switched on and anti misoperation of non fault branch when it’s on.