Number
A power transformer of which the magnetic circuit and windings are not immersed in an insulating liquid.
An electronic ac converter for changing the frequency.
An electronic converter that changes direct electric current to single-phase or polyphase alternating currents.
A transformer that, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency for the purpose of transmitting electrical power.
An ac power supply unit that maintains a continuous supply of electric power to the equipment it protects.
A power transformer of which the magnetic circuit and windings are immersed in oil.