◆ Haʻahaʻa haʻahaʻa, haʻahaʻa ke kumu kūʻai hana, a me ka hopena hoʻōla ikehu;
◆ Pahu ahi, pale ahi, pahū a me ka pollution ʻole;
◆ Hana maikaʻi i ka moisture-proof a me ka ikaika wela wela;
◆ Hoʻokuʻu hapa haʻahaʻa, haʻahaʻa haʻahaʻa a mālama ʻole;
◆ ʻO ka ikaika mechanical kiʻekiʻe, ke kūpaʻa pōkole pōkole a me ke ola lawelawe lōʻihi;
ʻO nā kūlana hoʻohana i kūpono i nā koi aʻe he mau kūlana hoʻohana maʻamau:
a.ʻAʻole pono ke kiʻekiʻe ma luna o ka ʻilikai ma mua o 1000m.
b.Ambient wela + 40 ° C i kēlā me kēia lā awelika mahana + 30 ° C makahiki awelika mahana + 20 ° C palena haʻahaʻa wela -30 ° C (no waho transformers) palena iki wela -5°C (no loko transformers).
C. Ua like ke ano o ka hawewe o ka mana lako me ka hawewe sine.
d.Symmetry o ka nui-phase mana lako uila, ka mana lako uila pili i ka multi-phase transformer pono e like symmetrical.