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C57.12.20

American National Standard for Transformers - Standard for Overhead Type Distribution Transformers, 500kVA and Smaller: High-Voltage, 7970/13800Y Volts and Below ANSI C57.12.20-1997

American National Standard for Transformers - Standard for Overhead Type Distribution Transformers, 500kVA and Smaller: High-Voltage, 7970/13800Y Volts and Below ANSI C57.12.20-1997

  • $107.50