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IEEE/ANSI C57.12.20-1997

American National Standard for Transformers - Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage 34500 Volts and Below: Low Voltage, 7970/13800Y Volts and Below

NORMA vydána dne 30.11.2002

Anglicky -
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The information about the standard:

Designation standards: IEEE/ANSI C57.12.20-1997
Note: NEPLATNÁ
Publication date standards: 30.11.2002
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Kategorie: Technické normy IEEE