Ndozi na ihe achọrọ kwa ụbọchị nke onye na-agbanwe ike nke mmanụ na-etinye n'ime tap-changer.

1. Tupu e tinye ihe mgbanwe tap-changer n'ọrụ, a ga-enyocha ma ọkwa mmanụ ọ dị otu, na ọ dịghị mmiri na-agbapụta, a ga-echekwa igbe njikwa nke ọma site na mmiri.

2. Mgbe etinyere relay gas nke na-agbanwe tap-changer ọhụrụ e nyere ọrụ, onye na-arụ ọrụ kwesịrị ịhapụ gas ahụ n'oge ọ dị mkpa (e nwere gas na silinda ahụ).

3. Mgbe ndị ọrụ nọ n'ọrụ na-achịkwa ihe na-agbanwe tap-changer n'elu ibu, ha kwesịrị ileba anya ma ihe na-agbanwe gas nwere afụ tupu na mgbe ọrụ ahụ gasịrị.

4. N'oge ọrụ, mgbe gas ọkụ na-arụ ọrụ ugboro ugboro, ndị ọrụ nọ n'ọrụ kwesịrị idekọ ma kọọ usoro ihe omume, kwụsị ọrụ ahụ, nyochaa ihe kpatara ya ma dozie ha n'oge.

5. Nlekọta na usoro nyocha mma mmanụ nke ihe na-agbanwe tap-changer n'elu ibu:

(1). N'oge ọrụ, a ga-anara ihe nlele mmanụ maka nnwale voltaji na-eguzogide otu ugboro kwa ọnwa isii, uru voltaji na-eguzogide mmanụ ekwesịghị ịdị ala karịa 30kV/2.5mm. Mgbe voltaji na-eguzogide mmanụ dị n'etiti (25~30kV)/2.5mm, a ga-akwụsị njikwa voltaji akpaka na-achịkwa ya.

(2). Nnyocha nke isi ahụ nke ihe na-agbanwe tap-changer: Mgbe otu afọ nke ọrụ ọhụrụ gasịrị, ma ọ bụ agbanweela ihe na-agbanwe tap-changer ugboro 5,000; mgbe afọ 3 ruo 4 nke ọrụ gasịrị ma ọ bụ oge nhazi agbakọtara erutela ugboro 10,000 ruo 20,000, mee nyocha nke isi kwụgidere.

(3). Mgbe ị na-elele isi ihe kwụgidere nke ihe mgbanwe tap-changer n'elu ibu, a ga-anwale uru nguzogide mgbanwe, ọ kwesịkwara ịdị ka uru nke onye nrụpụta ahụ si dị.