Machine seat number: 143T~449T (TC, TS) Capacity: 1-250HP Number of poles: 2-6P Voltage: 208-230/460V, 460V, 380V Frequency: 60Hz, 50Hz NEMA standard NEPX series explosion-proof ultra-high efficiency three-phase asynchronous motor, frame number: 143T~449T (TC, TS), capacity: 1-250HP, pole number: 2-6P, voltage: 208-230/460V, 460V, 380V, frequency: 60Hz, 50Hz. The performance level meets the design requirements of B, and the installation dimensions and efficiency indicators meet the standards. The safety characteristics comply with the provisions of ANSI/UL674-2011. Suitable for various types of petroleum, chemical, natural gas, biological, pharmaceutical and other mechanical supporting devices in explosive environments of Class I, Zone 1, Groups C and D.