Prefabricated substations yog tsim rau thaj chaw nyob, nroog pej xeem substations, tibneeg hu tauj coob nroog centers, thiab siv fais fab kev tsim kho. Cov neeg siv tuaj yeem xaiv qhov tsim nyog ntawm prefabricated substation raws li kev siv sib txawv thiab qib load. Txij li thaum nws cov kev taw qhia, lub prefabricated substation kev lag luam tau tsim sai heev, accounting rau 70% ntawm faib transformers nyob rau hauv tsim European lub teb chaws thiab 90% nyob rau hauv lub tebchaws United States. Nrog rau txoj kev loj hlob sai ntawm nroog modernization thiab kev txhim kho txuas ntxiv ntawm cov hluav taws xob hauv nroog hauv nroog hauv Suav teb, nws daim ntawv thov dav dav yog qhov kev zam.
Hais txog prefabricated substations, Tuam Tshoj pib ntshuam thiab xyaum cov uas los ntawm Fabkis thiab lub teb chaws Yelemees nyob rau hauv lig 1970s. Raws li kev tsim qauv, cov chaw ua haujlwm no tau siv siab - thiab qis -voltage switchgear thiab transformers, thiab hu ua European-style prefabricated substations, piv txwv li kev tsim lub tsev rau siab - thiab qis -voltage switchgear thiab transformers. Txij xyoo 1990 mus, Tuam Tshoj tau tshaj tawm Asmeskas cov chaw ua haujlwm prefabricated, uas ua kom yooj yim rau cov qauv los ntawm kev tso cov kev hloov pauv, lub nplhaib tseem ceeb, thiab fuses hauv cov roj-immersed transformer tank. Roj-cov zinc oxide surge arresters kuj tau siv. Lub transformer tshem tawm cov roj conservator, nthuav tawm cov roj tank thiab radiator rau saum huab cua. Hom transformer no hu ua American-style transformer, piv txwv li cov transformer nrog ib lub thawv dai ntawm nws.