Asynchronous motor NBS4 series

single-phase220 V380 V

Single phase 4" submersible motors for use in wells with diameters equal to or greater than 4". ■ Stator in oil ■ Cable material compliant with drinking water standards (with relative inspection) ■ Sand protection and mechanical seal to allow for optimal operation even in the presence of sand in the well ■ Excellent efficiency and low operating costs ■ All motors are pre-filled with liquid and 100 % tested ■ Number of starts per hour: max. 30 ■ Vertical and horizontal operation (prior authorisation) ■ Rated voltage: 210-220-230/50 Hz; ■ Voltage tolerance: ± 10 % ■ Motor protection: thermal relays in compliance with EN 60947-4-1, trip class 10 or 10A, trip time < 10 s. at 5 x IN ■ Insulation class: F ■ Cable dimensions: 4×1.5 mm2 ■ Cooling flow rate: min. 8 cm/sec. ■ Water pH: 6.5-8 ■ Thrust load: 1500 N, 2500 N, 4500 N(K), 6500 N(K)