Numbers and Titles



See26 11 00 for facility substations. 26 12 00 for medium-voltage transformers. 26 13 00 for medium-voltage switchgear. 33 70 00 for electrical utilities. 33 72 00 for utility substations.
34 21 13High Power Static Frequency Converters
34 21 16Traction Power Substations
34 21 19Traction Power Switchgear
34 21 23Traction Power Transformer-Rectifier Units