Soundproofing transformer

A soundproofing transformer, comprising:

• a tank;
• a winding portion and a core portion provided inside the tank;
• an insulating fluid provided inside the tank;
• a reinforcing member provided outside of the tank;
• a cavity having a resonance space and connected to the reinforcing member by a coupling member;
• a partition member stacked on the cavity and having an acoustic absorption portion;
• a noise inlet member having a first inlet facing the tank, connected to the resonance space, and configured to transmit noise introduced from the first inlet to the resonance space;
• and
• a noise reduction panel connected to the partition member and the noise inlet member, and having a second inlet provided to communicate with the acoustic absorption portion while facing the tank,
• wherein the cavity comprises a noise inlet hole formed in a surface facing the second inlet to communicate with the resonance space.