Le transformer yi-epoxy resin efakwe isakhiwo esivalekileyo ngokupheleleyo kunye nobushushu obupheleleyo. Yenzelwe ukusetyenziswa ekulinganiseni i-voltage, amandla e-elektroniki kunye nokukhuselwa kwe-relay kwinkqubo yamandla ene-frequency elinganisiweyo ye-50Hz - 60Hz kunye ne-voltage elinganisiweyo ye-3,6, 10 kV okanye ngaphantsi. Ubukhulu obuncinci, ubunzima obuphantsi, inokufakelwa nakweyiphi na indawo.