Beddelka laba-meelood ee shidaalka lagu shubo ee load break waxaa inta badan loo isticmaalaa nooca terminal-ka ee sanduuqa Mareykanka, iyadoo la adeegsanayo habka hawlgalka guga, waa badhanka isku xirka saddex-geesoodka ah si loo dhammaystiro load breaking iyo xidhitaanka.
Labada badhamada culayska laba-meelood leh waxaa sidoo kale ka koobnaan kara nidaamka badalka nooca giraanta ee nidaamka qaybinta nooca giraanta, xaaladda badalka laba-meelood leh: shid, dami. Qiimaynta 10kV waxaa loo isticmaali karaa mashaariicda tamarta dabaysha marka la isticmaalayo balaastiigyada.
Kahor intaadan isticmaalin, transformer-ku wuxuu u baahan yahay qalajin.
Buuxi heerarka JB/T10681-2006, isticmaalka shuruudaha waafaqsan xeerarka GB10230.
| Sharaxaad | Xuduudaha | |||
| (kV) Danab hawlgal joogto ah | 6 | 10 | 20 | 35 |
| (kV)Qalabka danabkiisu ugu sarreeyo | 7.2 | 12 | 24 | 40.5 |
| (kV)BIL iyo Buuxa Hirka | 60 | 75 | 125 | 200 |
| (A) Haddal magaceed oo joogto ah | 200 | 315 | 400 | 630 |
