3.1 Power supply: three-phase: 380V, 50Hz, three-phase four-wire, special: 415V, 660V
Single Phase: 220V, 50Hz
3.2, the work environment
3.2.1 ambient temperature: -20 to +40 ° C (DKX-GB type is -30 to +60 ° C)
3.2.2 Relative humidity: not more than 80% (DKX-GB type is not greater than 95%) (20 ± 5 ° C)
3.2.3 for flammable / explosive and corrosive media spaces; (DKX-GB type for environment II A, II Class B of T1 ~ T4 group of explosive gas mixtures. Proof mark d Ⅱ BT4).
Note: DKX-GB protection rating of IP55 up to IP65, and special orders.