Autotransformer Voltage Regulator "ARN-400".

Power supplies. Rectifiers, stabilizers, autotransformers, transient transformers, etc.Regulating autotransformersAutotransformer Voltage Regulator "ARN-400" from the beginning of 1965 produced the Moscow transformer plant named after Kuibyshev. ARN-400 is designed to power televisions, radios and other radio or electrical equipment by manually maintaining a voltage of 220 (127) volts when the voltage in the electrical network changes from 140 to 245 volts (or from 90 to 150 V when operating at 127 V) at power in a load of up to 400 watts.