How is metal enclosed switchgear derated for altitudes above 3300 feet or 1000 meters?
Issue:
How to derate switchgear for altitudes above 3300 feet or 1000 meters?
Product Line:
HVL Switchgear.
Environment:
Products sold in the United States.
Cause:
Product features.
Resolution:
The derating tables are shown in the catalog sections and in the pricing guides.
Switchgear must be derated for altitudes above 3300 feet or 1000 meters. The Table is per ANSI C37.40.2.3
The BIL, interrupting current and continuous current must be lowered.
If required, a device with the next higher rating must be ordered.
How to derate switchgear for altitudes above 3300 feet or 1000 meters?
Product Line:
HVL Switchgear.
Environment:
Products sold in the United States.
Cause:
Product features.
Resolution:
The derating tables are shown in the catalog sections and in the pricing guides.
Switchgear must be derated for altitudes above 3300 feet or 1000 meters. The Table is per ANSI C37.40.2.3
The BIL, interrupting current and continuous current must be lowered.
If required, a device with the next higher rating must be ordered.
Publicado para: Schneider Electric Mexico
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