|  | MODEL 3-NM | 
                      
                        | Input Voltage | 160V - 250V | 275V - 430V | 
                      
                        | Output Voltage | 220V±3% | 380V±3% | 
                      
                        | Phase | 3-Phase  3-Wire | 3-Phase  4-Wire | 
                      
                        | Frequency | 50Hz/60 Hz | 
                      
                        | Response Time | Within 1 sec. against 10% input
                          voltage deviation | 
                      
                        | Efficiency | Better than 90% (input voltage 198V,
                          output voltage 220V and at rated load) | Better than 90% (input voltage
                          342V, output voltage 380V and at rated load) | 
                      
                        | Power Factor | Better than 95% (input voltage 198V,
                          output voltage 220V and at rated load) | Better than 95% (input voltage
                          342V, output voltage 380V and at rated load) | 
                      
                        | Ambient Temperature | - 5% °C - +
                          40°C | 
                      
                        | Ambient Humidity | Less than 90% (relative humidity) | 
                      
                        | Temperature Rise | Less than 75 °C
                          (input voltage 198V, output voltage 220V and at rated load) | Less than 75 C(input
                          voltage 342V, output  voltage 380V and
                          at rated load) | 
                      
                        | Cooling System | Air blast
                             
                      
                            (Model 3 
                                KVA
                             : Air cooled) | 
                      
                        | Control System | DC servo motor | 
                      
                        | Style | Stand-alone style | 
                      
                        | Insulation Resistance | More than 5MΩ at DC 500V | 
                      
                        | Dielectric Strength | Tested at AC 1500V for 1 min. | Tested at AC 2000V for 1 min. |