Application Guide. RIGID SUBSTATION BUSES The ampacity rating calculations of rigid, Aluminum or Copper, outdoor, exposed non-enclosed buses and conductors involves parameters such as ambient temperature, maximum conductor temperature limitations, wind speed, wind direction, solar gain, emissivity, and absorptivity. The maximum temperature at which the bus can operate is limited by loss of strength (loss of life) due to temperature cycles and mechanical movement due to expansion. Rigid substation bus ratings shall be assigned in accordance with IEEE Standard 605-1998.
Appears in 2 contracts
Sources: Procedures for Determining and Implementing Transmission Facility Ratings, Procedures for Determining and Implementing Transmission Facility Ratings