75 kW at 480 V — what the ratings mean for the load
The ATV212WD75N4 is a 75 kW Altivar 212 drive designed for three-phase asynchronous motors on 380–480 V supplies. At 380 V it draws 141.8 A line current; at 480 V that drops to 111.3 A — the lower current at the higher voltage means the input wiring and upstream protection can be sized for the 480 V figure when that is the nominal supply. The integrated Class C2 EMC filter covers most industrial environments without an external filter — it meets EN 55011 Class A Group 1 and IEC 61800-3 Category C2/C3 conducted and radiated emission limits. For installations on IT or corner-grounded TN systems the altitude limit drops to 2000 m; above that derate current 1 % per 100 m up to 3000 m.
Protection and I/O that match the application
The drive includes thermal protection for both the power stage and the motor, plus short-circuit detection between motor phases and between output phases and earth. Input phase loss, DC bus overvoltage, and line undervoltage are all monitored — the protection list covers the common failure modes that take down a pump or fan drive on a production line. The analog input VIA is switch-configurable for voltage (0–10 V DC, 30 kOhm) or current (0–20 mA, 250 Ohm, 10-bit resolution). VIB is configurable as a second voltage input or as a PTC probe input for motor thermal protection — useful when the motor is remote and a separate PTC relay is not wanted in the panel. RS-485 Modbus RTU is on the RJ45 port at 9600 or 19200 bps, 1–247 addresses, with configurable parity. The LonWorks option card slot is present but not populated — if the site uses LonWorks building automation, factor the card cost into the BOM.
