Sako TNS- 30 KVA (3 Phase) Input Phase : Three phase Voltage : AC 280V ∼ 430V Frequency : 50Hz/60Hz Output: Voltage : 380V ± 3% Capacity : 24 KW Frequency : 50Hz/60Hz Protection: Under Volt : 318V ± 7V Over Volt : 426 ± 7V Over Heat : Optional Cooling System : Natural Cooling System (Optional) Short Phase : Yes Delay : 3-7 Sec/ 3-7 Min selectable Bypass : Auto/ Manual Optional Over Load : Yes Efficiency: AC-AC : >95% Acoustic: Noise level : ≤50dB Environmental: Temperature : -5°C ∼ 45° C Humidity : 20% to 90%