Category: IEEE

IEEE

IEEE C57.12.21-2000

American National Standard Requirements for Pad-Mounted, Campartmental-Type, Self-Cooled, Single-Phase Distribution Transformers With High-Voltage Bushings: High Voltage (34 500 GrdY/19 920 V and Below) and Low Voltage (240/120 V, 167 kVA and Smaller)
standard by IEEE, 12/31/1992