Ga maƙasudin maƙasudi, famfo ba zai iya ɗaukar babban zafin jiki ba, kuma famfo na DC maras gogewa mai lamba 3 kawai zai iya ɗaukar zafin zafi.

2-phase DC ruwa famfo:

Gabaɗaya magana, ana gina allon da'ira na famfon ruwa na DC (famfo na ruwa mai kashi 2) a cikin jikin famfo, sannan a lulluɓe shi da resin epoxy.Jikin famfo yana da ƙayyadaddun yanayin zafi yayin amfani, misali, zafin jiki na cikin famfo lokacin aiki a cikin yanayin digiri 20.Zai kai kimanin digiri 30, don haka zafin jiki na cikin famfo yana da kusan digiri 50.Lokacin da famfo na ruwa ke aiki a zafin jiki na digiri 60, zafin jiki na ciki yana kusan digiri 90, kuma kayan aikin lantarki na gabaɗaya suna da matakin juriya na zafin jiki na digiri 85 kuma wasu na iya kaiwa digiri 125.Don haka, idan zafin jiki na ciki ya wuce matakin juriya na zafin jiki na kayan lantarki na dogon lokaci, rayuwa da amincin famfon ruwa na DC ba za a iya tabbatar da su sosai ba.

3-phase DC ruwa famfo:

Fasfo na ruwa na DC mai lamba 3 yana ɗaukar fasaha mara ƙarfi, wato, baya buƙatar gano matsayin maganadisu da canza alkibla ta firikwensin.Ana shigar da allon motar famfo a waje, babu wani kayan lantarki a cikin jikin famfo. Abubuwan da ke cikin jikin famfo duk an yi su ne da kayan da ke jure zafin jiki.Mai kula da famfo ya keɓe daga tushen zafi a cikin yanayin zafi mai zafi domin jikin famfo zai iya nunawa kai tsaye zuwa yanayin zafi da kuma amfani da dogon lokaci a cikin yanayin zafi mai zafi.

Samfurin 3-phase kamar haka

DC45 jerin(DC45A,DC45B,DC45C,DC45D,DC45E)

DC50 jerin(DC50A,DC50B,DC50C,DC50D,DC50E,DC50F,DC50G,DC50H,DC50K,DC50M)

jerin DC55(DC55A,DC55B,DC55E,DC55F,DC55JB,DC55JE)

Jerin DC56(DC56B,DC56E)

DC60 jerin (DC60B, DC60D, DC60E, DC60G)

jerin DC80(DC80D,DC80E)

jerin DC85(DC85D,DC85E)