58 Guidelines for planning the electrical installation Requirements tableThe following table shows how to select the motor insulation system and when optionalABB du/dt filters, insulated N-end (non-drive end) motor bearings and ABB common modefilters are required. Failure of the motor to fulfill the following requirements or improperinstallation may shorten motor life or damage the motor bearings and voids the motorwarranty.MotortypeNominal AC supplyvoltageRequirement forMotorinsulationsystemABB du/dt and common mode filters, insulated N-endmotor bearings100 kW < PN < 350 kWorIEC 315 < frame size <IEC 400PN > 350 kWorframe size > IEC 400134 hp < PN < 469 hporNEMA 500 < frame size <NEMA 580PN > 469 hporframe size > NEMA 580ABB motorsRandom-woundM2_,M3_ andM4_UN < 500 V Standard + N + N + CMF 1)500 V < UN < 600 V Standard + N + du/dt + N + du/dt + CMForReinforced + N + N + CMF 1)600 V < UN < 690 V(cable length < 150 m)Reinforced + N + du/dt + N + du/dt + CMF600 V < UN < 690 V(cable length > 150 m)Reinforced + N + N + CMF 1)Form-woundHX_ andAM_380 V < UN < 690 V Standard + N + CMF PN < 500 kW:+N + CMF 1)PN > 500 kW+N + du/dt + CMFOld*form-woundHX_ andmodular380 V < UN < 690 V Check withthe motormanufacturer.+ N + du/dt with voltages over 500 V + CMFRandom-woundHX_ andAM_ **0 V < UN < 500 V Enamelledwire with fiberglass taping+ N + CMF 1)500 V < UN < 690 V + N + du/dt + CMFHDP Consult the motor manufacturer.* manufactured before 1.1.1998** For motors manufactured before 1.1.1998, check for additional instructions with the motor manufacturer.1) also du/dt filter is required at the output of the basic drive modules if the motor cable length is less than20 meters before connecting the motor cables together
