KSB provide the supplementary information about the pump, motor and VFD operation as shown below. Motor is designed for converter-operation only. DOL starting is not possible. JV will arrange wiring connection for converter-operation. If starting up the motor in DOL, motor will operate at 960rpm. Then, the pump will be destroyed as the maximum pump design operating speed is 495rpm. The max. allowable operating speed limit of KSB sea water intake pump PNZ A 14-101/1 is 515rpm. To protect the pump failure in case of malfunction of Variable Frequency Converter, an encoder and speed limiter will be installed for each motor by Siemens now to limit the operating speed of motor at 495rpm+2% tolerance = 505rpm.