1. Ke kohoʻana i nā palena nui: pono e kohoʻia nā mea hopu valve e like me nā kūlana loea i heluʻia ma nā koi kūpono.
2. I ka hoʻohana ʻana i ka valve arrester no ka pale ʻana i ka uila overvoltage, ma waho aʻe o nā kaʻa kaʻa, koho i nā mea hopu me nā pae uila hana like ʻole a me nā ʻano polokalamu ʻōnaehana ʻē aʻe.
3. ʻAʻole hiki ke ʻoi aku ke koena o ke kaomi hana ʻana o ka valve arrester ma lalo o ka uku maʻamau a me ka hoʻokuʻu ʻana i kēia manawa ma mua o 71% o ka uila uila holo piha i ka hawewe hana (BIL) o nā mea uila ma lalo o ka mālama ʻana (ma waho aʻe o nā mīkini uila uila).
4. 'O ke au o keia manawa o na mea hopu metala oxide a me carbon-carbon composite valve arresters e pono e ku i keia mau koi.
(1) ʻO 110kV ka palekana kumu kūpono ʻaʻole i emi iho ma mua o 0.8Um.
(2) 3~10kV a me 35kV, 66kV pūnaewele lako polokalamu ʻaʻole emi ma lalo o 1.1Um a me UM;ʻO 3kV a ma luna aʻe o ka mīkini hana hoʻonohonoho polokalamu ʻōnaehana ʻoi aku ka nui o ka uila hana ʻaʻole i emi iho ma mua o 1.1 manawa.
(3) ʻAʻole i emi iho ka mana o kēia manawa o ka mea hoʻopaʻa kiko kūʻokoʻa ma lalo o 0.**Um a me 0.58Um;ʻaʻole i emi ka nui o ka volta hana o ka 3~20kV generator set ma mua o 0.** manawa.
5. Ke koho ʻana i nā mea hoʻopaʻapaʻa metala ʻole ʻole e like me nā lako pale uila overvoltage, pono e hoʻokō ʻia nā lula pili.
6. No nā mea hoʻololi 110kV a me 220kV nona ka helu kūʻokoʻa i hoʻokaʻawale ʻia ma ke ʻano he insulating layer, inā hoʻohana ʻia ka hoʻololi hoʻokaʻawale me ka hana synchronous maikaʻi ʻole, pono e mālama ka mea hao hao hao i ka wahi kū ʻole o ka transformer.
7. Hoʻokaʻawale ʻia nā mea hopu metala metala ʻole ʻole e like me kā lākou uku maʻamau a me ka hoʻokuʻu ʻana.
8. Pono ka mea hopu me ka lako polokalamu i helu 'ia i kēia manawa o 35kV a ma luna me ka ho'ouka a me ka ho'oku'u 'ana i ka lako polokalamu nānā 'ana.