DGA monitor can be installed and successfully operated in a wide variety of environments. Note the following special considerations:
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Cold environments: Trace heating elements and thermal insulation may need to be placed over the exposed sections of the oil pipes.
- Mineral oil: Required heating power and insulation thickness depends on the pour point of the transformer oil that is used. Temperature of the oil in the lines must exceed the pour point with a reasonable margin in order to keep the oil flowing normally during operation.
- Ester liquid: Recommended heating power for trace heating is at least 10 W/m and recommended minimum thermal insulation thickness is at least 20 mm (0.787 in). Temperature of the liquid in the lines should stay above 0 °C (32 °F).
- Hot environments: Weather shield installation option will reduce the solar radiation load on the DGA monitor. Consider placing the DGA monitor in a location that is not exposed to direct sunlight.
- Operating altitude: DGA monitor is intended for use in altitude range -1000 … 3000 m.
If you have any questions, contact Vaisala for more information.
| Performing a site inspection in person is a good idea. Take photographs of the intended installation location, oil connections, and electrical connections. Measure the amount of cable and oil pipe needed. |