AR-OH — Overhead AutoRANGER®
Sales and Ordering Information
Please contact Customer Service at
SEL Lake Zurich, Illinois at +1.847.362.8304 |
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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).
- Reduce engineering time, inventory, and misapplication with self-adjusting trip levels.
- Automatically adjusts its trip value based on the load current, eliminating the need to specify a trip value.
- Distinct temporary (amber) and permanent (red) fault indications provide the flexibility of tracking down self-clearing faults.
- The inrush restraint feature allows for coordinated integration with automatic reclosing schemes.
- Intelligent LED display provides the appropriate level of intensity for ambient-lighting conditions.
- The best battery-saving technology in the industry provides more than 2500 flashing hours of operation.
- Patented Ramp-Down Restraint® feature prevents false activation after extended circuit lockout.
- Rugged construction ensures long product life.
Quick, simple installation.
- Installs with a single hot stick—no extra clamps or screws
- Zero maintenance
- Test activate and manually clear with the CRSRTT tool
Overhead
- Provides clear visual indication of the fault path to line crews in the field.
- Reduces fault-locating time by guiding line crews to the faulted line section.
- Allows line crews to easily distinguish between temporary and permanent faults.
- Provides a simple, economical way to improve utility reliability metrics by reducing outage durations.
Rural
- Automatic trip value selection as low as 50 A.
- TR(TV)™ feature (Timed Reset as a function of Trip Value) allows additional time for line crews to find faults on remote lines.
Troubleshooting
- Distinct eight-hour temporary indication leads line crews to troubleshoot problematic sections of line.
- Allows line crews to investigate the cause of self-clearing faults and successful trip and reclose operations to improve circuit reliability.
| Trip Value Range |
50 to 1200 A |
| System Voltage Range (L-L) |
4160 V to 69 kV |
| Maximum Fault Current |
25 kA for 10 cycles |
| Trip Response Time |
24 ms |
| Permanent Flash Clearing Times |
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| 50 and 100 A Trip Levels |
8 hours |
| 200 to 1200 A Trip Levels |
4 or 8 hours |
| Temporary Flash Clearing Times |
0, 4, 8, 16, or 24 hours |
| Outer Diameter Clamping Range |
0.162" to 1.50" |
| Battery |
3.6 V high-capacity 8.5 Ah lithium battery with a 20-year shelf life |
| Flash Life |
2500+ hours (625 four-hour events*) |
| Temperature Range |
—40° to +85°C |
| Approximate Weight |
575 g (1.27 lbs) |
| * Based on AR4-8-OH. Others dependent on configuration |
Flyers
Guideform Specification
Installation Instructions
Certificates