Japanese to English Tech/Engineering Engineering: Industrial

Example sentence: GT1は金曜日に初併入。あまりにもあっけなく併入、一時間後に解列した。
Context:「併入」comes up often in a weekly report about a gas turbine construction project. (GT=gas turbine. There's a few GTs involved, hence "GT1")
My speculation: I believe it is refering to connecting one part (of a machine?) to another part. (Possibly a pipe?). One website translated the whole phrase「系統併入比率」as one word: "penetration". However, I am unable to confirm that this will work in my sentence, or that it is even correct.
My guess translation: "GT1 was initially connected on Friday. However, the connection went all too easily and it paralleled off after one hour."
Note: I am extremely unsure about my translation and would appreciate any help as to how the word is usually handled in English in the industry.