While designing new overhead line, line thermal ratings are normally calculated assuming conservative weather conditions and a maximum allowed conductor temperature, which allows adequate electrical clearance and avoids annealing to aluminium or copper wires.
OTLM is a system solution for monitoring and rating your existing and new OHL based on real time monitoring of conductor temperature, sag, load and weather conditions.
Specification
- High voltage level from 110 kV to 400 kV
- Conductor diameter 15 mm to 45 mm
- Cross section from 95,0 mm2 to 950,0mm2
- Operational current from 65 A
- Conductor current measurement resolution 1A
- Operating ambient temperature -40 0C to +85 0C
- Range of line temperature measurement -40 0C to +1250C
- Temperature measurement resolution 0,5 0C
- Temperature measurement deviation ±20C in range form -200C to +1000C
- Communication protocols SMS/GPRS
- Weight ax. 9,5 kg
- Adjustable from 60 sec to 86400 sec, step 1 sec (default: 600 sec)
| Alarm setting (°C) | Data sending(min) | |
|---|---|---|
| Normal working | 20 | |
| First alarm (T>) | 65 | 10 |
| Second alarm (T>>) | 75 | 1 |
