How does a dry type transformer, 600V and below perform at a high altitude? Is there a derating factor that needs to be considered for high elevation environment?
Issue:
What derating factors need to be considered for High altitude installation of Low Voltage dry type transformers?
Product Line:
LV Dry Type Transformers
Environment:
Application
Cause:
Product features
Resolution:
The effectiveness of the ambient air to remove/carry away heat from a transformer is reduced at higher altitudes due to air`s lower density at those elevations.
The derating factor is 0.3% for every 330 FT over 3300 FT, or 0.3% for each 100 meters above 1000 meters.
For example, if a transformer is being used at 13,050FT, the deration factor is = ( 13,050 FT - 3300 Total derating factor) / 330 FT = 29.54 ... round up to 30... 30 X 0.3 = 9% derating, or 91% capacity available.
What derating factors need to be considered for High altitude installation of Low Voltage dry type transformers?
Product Line:
LV Dry Type Transformers
Environment:
Application
Cause:
Product features
Resolution:
The effectiveness of the ambient air to remove/carry away heat from a transformer is reduced at higher altitudes due to air`s lower density at those elevations.
The derating factor is 0.3% for every 330 FT over 3300 FT, or 0.3% for each 100 meters above 1000 meters.
For example, if a transformer is being used at 13,050FT, the deration factor is = ( 13,050 FT - 3300 Total derating factor) / 330 FT = 29.54 ... round up to 30... 30 X 0.3 = 9% derating, or 91% capacity available.
Publicado para: Schneider Electric Mexico
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