C57.12.25-1990 - American National Standard for Transformers - Pad-Mounted, Compartmental-Type, Self-Cooled, Single-Phase Distribution Transformers With Separable Insulated High-Voltage Connectors; High Voltage, 34 500 Grdy/ 19 920 Volts and Below; Low Voltage, 240/120 Volts; 167 kVa and Smaller Requirements | IEEE Standard | IEEE Xplore