2020SY/T 0033-2020 Design specifications for power transformation and distribution in oil and gas fields
2009SY/T 0033-2009 Code for design of oil-gas field electrical power substation and distribution
1989SYJ 33-1988 Design regulations for power transformation and distribution of oil fields and long-distance crude oil pipelines
SYJ 33-1988 Design regulations for power transformation and distribution of oil fields and long-distance crude oil pipelines was changed to SY/T 0033-2009 Code for design of oil-gas field electrical power substation and distribution.