... transformer 4Electrical Product Description for Toroidal transformer:Professional power supply transformer used for the field of pro- ... audio system, home electrical appliance, lighting, Medical equipments, Halogen quartz lamp, UPS industry, industrial control area ect….: Specification ... 120V, 230V, 240V / 50 Hz c. Secondary Customized Power range: 20VA to 10KVAd. Standard UL506, UL1411, EN61558, ...