4" Oil Cooling Submersible Motor, NEMA Standard, Class B, IP68 Power from 0. ... , 380-440V, 50/60Hz Available. 4" Oil Cooling Submersible Motor, Submersible Motor, Oil Cooling Submersible Motor, pump motor BASIC CHARACTERS Conform to ... .5-8.0 Maximum submerged depth: 350m Insulation: F Minimum cooling flow along the motor: 8 cm/s Minimum starts per hour ...