IEEE C57.12.25 - Standard for Pad-Mounted, Compartmental-Type, Self-Cooled, Single-Phase Distribution Transformers with Separable Insulated High-Voltage Connectors; High Voltage, 34500 GrdY/19920 Volts and Below, Low Voltage, 240/120 Volts; 167 kVA and Smaller - Requirements
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This product standard covers certain electrical, dimensional, and mechanical characteristics and safety features of single phase, 60 Hz mineral oil filled, self-cooled, pad-mounted, compartmental type distribution transformer with separable insulated high-voltage connectors. Transformers are rated 167 kVA and smaller with high voltage of 34500 GrdY/19 920 Volts and below for operation between one phase and grounded neutral and low voltages of 240/120V.
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