1. Kakaretso

Valve ea ho lahla metsi ea MV le HV e Phahameng ka Voltage e Phahamengke valve e khethehileng e etselitsoeng ka ho khetheha li-transformer tsa motlakase o phahameng (haholo-holo maemong a kang li-transformer tsa mofuta oa lebokose la Amerika le li-substation tse kopantsoeng esale pele). Mosebetsi oa eona oa mantlha ke ho lokolla khatello ea oli le khase e hlahisoang ka har'a transformer ka mokhoa o sireletsehileng ka lebaka la ho hloleha ha ho kenya mocheso, ho chesa haholo sebakeng seo, kapa ho ntša metsi a arc. E boetse e nahana ka ho tšepahala ha ho tiisa, ho hanyetsa mafome, le boiketlo ba ts'ebetso. Moralo oa eona o latela maemo a indasteri ea motlakase ea Amerika (joalo ka letoto la IEEE C57, ANSI/IEEE 386). E lumellana le litšobotsi tsa sebopeho sa li-transformer tsa Amerika (joalo ka litanka tsa oli tse nyane le litlhaloso tsa sebopeho sa flange). Ke karolo ea bohlokoa bakeng sa ho netefatsa ts'ebetso e sireletsehileng ea li-transformer.

 2. Flijos

Phomolo e nepahetseng ea khatello, e thibelang ho phatloha ho feteletseng ha khatello

Tšireletso e tiisitsoeng ka botlalo, ha ho dutla

Moralo o thibelang khoholeho ea oli le o nkang nako e telele

E tsamaisana le li-transformer tsa setaele sa Amerika.

3.Kopos

E sebelisoa haholo-holo ho li-transformer tsa motlakase o phahameng tsa setaele sa Amerika (tse kang liteishene tse nyenyane tsa mofuta oa lebokose la setaele sa Amerika, li-transformer tsa modular, liteishene tse nyenyane tse entsoeng esale pele), tse loketseng haholo bakeng sa:

· 1). Maemo a nang le litlhoko tse phahameng bakeng sa polokeho ea lisebelisoa marangrang a kabo ea litoropo, lirapeng tsa indasteri, jj.;

· 2). Libaka tse senyang tse kang mongobo o phahameng, spray ea letsoai kapa libaka tsa lik'hemik'hale (li hloka khetho ea 'mele ea li-valve tse thibelang ho senyeha);

· 3). Liteishene tse bohlale tse hlokang tlhahlobo khafetsa kapa tse se nang batho (ho kgothaletswa hore di be le tshebetso ya ho fana ka maikutlo a letshwao).