We are offering rectifier for dc application. Brief specifications input voltage: 380 - 440 volts, 3-phase 50hz. Ac supply output voltage: fixed rated maximum dc voltage or variable from zero to maximum rated voltage. Output current: rated maximum dc current temperature rise: less then 35oc above ambient at the top of the oil. Efficiency : 12v rect - 82%, 24v rect - 90%, 100v rect - 94%, 200v rect-96% more than 250v rect-more than 97% ripple content: less than 5% insulation: ‘a’ class for oil cooled.