EI type transformers, power transformers, transformer of traffic lights, pure copper wire sufficient power, complete specifications can be customized input rated voltage: single-phase 220 VAC / 110 v / 230 v / 380 v (according to customer requirements can be change) : working frequency 50 hz / 60 hz output voltage: 22.5 VAC (according to customer requirements can be change) output current: 0.8 A (according to customer requirements can be change) power: 18 w (according to customer requirements can be change) specification: 66 * 18: temperature < 85 ℃ dielectric strength: 2000 v, 1 minute without breakdown of insulation resistance: Winding insulation resistance to ground of single-phase acuity 2.2 M Ω conditions of use: 1. Ambient temperature: -15℃ ~ +40℃ 2. Relative humidity: ≤85%, 50 pieces start to sell, details can consult customer service