Phase : Single Phase Input Voltage: 140V ~ 240V Output Voltage : 110V dan 220V ± 3% Frequency : 50Hz / 60 Hz Respon Time : Within 0, 5 second agaist 10% input voltage deviation Efficiency : Better than 90% ; Power Factor Better than 95% Ambien Temperature : -5º ~ + 40º C Ambien Humidity : Less than 90% ( relative humadity) Temperature Rise : Less than 75º C ( input voltage 180V, output voltage 220v and rated load) Cooling System : Convection-cooled ( Model 2KVA s/ d 10KVA) Control System : DC servo-motor