Planning the electrical installation 65Additional requirements for ABB high-output and IP23 motorsThe rated output power of high output motors is higher than what is stated for theparticular frame size in EN 50347 (2001). This table shows the requirements for ABBrandom-wound motor series (for example, M3AA, M3AP and M3BP).Nominal mainsvoltage (AC linevoltage)Requirement forMotorinsulationsystemABB du/dt and common mode filters, insulated N-end motor bearingsPN < 100 kW 100 kW < PN <200 kWPN > 200 kWPN < 140 hp 140 hp < PN <268 hpPN > 268 hpUN < 500 V Standard - + N + N + CMF500 V < UN < 600 V Standard + du/dt + du/dt + N + du/dt + N +CMForReinforced - + N + N + CMF600 V < UN < 690 V Reinforced + du/dt + du/dt + N + du/dt + N +CMF
