YFB4/YFB3series pefu pa'u-fa'amaonia le tolu-vaega afi fa'a-synchronous ua fa'apipi'iina atoasquirrel-cage e fa'amalieina e le tagata lava iatolu-vaega afi asynchronous.O loʻo i ai uiga o le laʻititi laʻititi, mama mama, faʻatuatuaina galuega, foliga matagofie, ma isi, ma e iai le lelei o le maualuga o le lelei, maualalo le pisa, vibration laʻititi, maualuga maualuga o le vevela, faʻatinoga lelei, faʻaleleia ma talafeagai le fausaga faʻamaonia, saogalemu ma fa'atuatuaina fa'aoga, ma isi.
E masani ona faʻaaogaina i vailaʻau, ie (e pei o le cotton fiber, flax fiber, chemical fiber, etc.), metallurgy (magnesium powder, alumini paʻu, carbon powder, ma isi), gaosiga o saito (e pei o saito, sana, saito, ma isi. ), fafaga fafaga (mea'ai toto, mea'ai i'a ), vaila'au vaila'au, tapaa, fai pepa, mea fa'apipi'i (e pei o palasitika, vali), mea faufale ma isi nofoaga o lo'o iai le pefu mu.
Tele fa'avaa: 80~355mm.
Va'aiga malosi fa'atatau: 0.55~315kW
Numera o pou: 2~16 pou
Fua fa'atatau: 380, 660, 380/660V.(Manatua: Fa'asologa autu 3kW ma lalo ole voltage 380V ole Y feso'ota'iga, 3kW ma luga ole voltage 380V o le △ feso'ota'iga; e mafai fo'i ona gaosia le volt fa'apitoa)
Fa'atatau taimi: 50Hz
Insulation: 155 (F) vasega
Malosiaga: Vasega malosi malosi 2/vasega malosi malosi 3
Metotia malulu: IC411
Auala faʻapipiʻi: IMB3 (isi auala faʻapipiʻi e mafai foi ona gaosia).
Puipuiga tulaga: IP65, IP55
Faiga fa'agaioiga: S1
Fa'ailoga e pa'u: Ex tD A21 IP65 T 130°C, Ex tD A22 IP65 T 130°C, Ex tD A22 IP55 T 130°C
Ea vevela: -15~+40℃.
Maualuluga: e le sili atu i le 1000m.
(O le faʻapitoa o le ea vevela ma le maualuga e manaʻomia ona malilie i ai itu uma e lua, faʻamolemole taʻu mai pe a oka.)