Eminyakeni yamuva nje, kube nezingozi ezingenakubalwa zokuqhuma kwe-power transformer. Izimo ezinjalo azivamile ukwenzeka kuma-voltage transformers athengiswa abathumeli besiteshi esincane saseShayina. Isizathu siwukuthi izinga le-transformer esetshenziswa e-China lihle kakhulu, akulula ukubonakala kwengozi yokuqhuma kwe-transformer yamandla, ngekhwalithi yomkhiqizo kanye nentengo ephansi ukuheha abatshalizimali abaningi bangaphandle ukuthi bathenge imikhiqizo ye-transformer yaseChina. Ngemuva kwentengo ephansi ukukhethwa okuqinile kwazo zonke izingxenye ngabathumeli bempahla baseShayina abathumela ngaphandle