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  • Fault locator for overhead lines
  • Fault locator for overhead lines

AR-OH

Article: 00048942

Fault locator for overhead lines

The AR-OH AutoRANGER is a self-adjusting fault indicator applied on overhead systems. It automatically selects a trip value based on sampled load currents. To become active and ready to respond to an event, the AutoRANGER must be installed on an energized line long enough to allow load current sampling and selection of a trip value. After an event has occurred the AR-OH samples system conditions to determine a display notification of either a temporary or permanent event occurrence.

A temporary event is indicated by a single superbright amber-colored flashing LED. Permanent events are indicated by two superbright, red flashing LEDs. The flash duration period of both event types (temporary or permanent) may be selected to best coordinate with line crew response times. Available flash time periods are noted in the ordering tables.

The AR-OH uses inrush restraint technology to prevent the AR-OH from tripping on reclosing attempts. A true timed reset design provides protection from false trip responses resulting from backfeed currents or voltage fields generated from overbuilt/underbuilt systems. Manual LED test activation or flashing clearing is accomplished using test tool CRSRTT (sold separately).

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