2918 kW, 3490 kVA — medium-voltage mill drive
The ATV1200A37606363: Rated motor power of 2918 kW with an apparent power of 3490 kVA and line current of 320 A. The supply voltage limits span 2970–3630 V — this is a medium-voltage drive, not a 480 V class unit, so the incoming transformer and switchgear must be rated for the 3 kV class. The 36-pulse diode rectifier front end delivers inherently low line-current harmonic distortion without an active front end or external filter bank. For a hot-strip mill or large pump/fan installation, this simplifies harmonic compliance studies and avoids the cost of a multi-pulse transformer.
Overload profile and duty cycle
Standard overload rating: 1.2 × rated current for 60 seconds, 1.5 × for 3 seconds. High-overload rating: 1.5 × for 60 seconds, 1.85 × for 3 seconds. The high-overload curve suits applications with intermittent peak torque demands — crushers, mixers, or mill table drives where the load spikes during breakaway. The drive handles both synchronous and asynchronous motors, so it can replace an older DC drive on a mill stand or drive a new synchronous motor for a high-efficiency retrofit.
Physical footprint and facility planning
Floor-standing enclosure with separate air flows for the transformer and power cells. Standard-efficiency configuration: 6670 mm wide × 1700 mm deep × 2670 mm high. High-efficiency configuration: same footprint but 2970 mm tall. The 80 dB noise level means hearing protection zones around the drive cabinet are mandatory. Cooling air volume is 33,000 m³/h for both efficiency variants. The forced-convection cooling system requires a dedicated HVAC supply sized for that airflow — not a trivial plant engineering detail. Operating position is vertical ±10 degrees.
Standards and isolation
CE marked. Designed to EN/IEC 61800-3 (EMC), EN/IEC 61800-4 (harmonics), EN/IEC 61800-5-1 (safety), EN/IEC 60204-11 (machinery), and EN/IEC 60529 (enclosure protection). Pollution degree 2 per EN/IEC 61800-5-1 — typical for controlled electrical rooms, but not for dusty mill environments without supplementary cabinet filtration. Electrical isolation between power and control circuits. Dielectric strength tested at 20 kV AC between earth and power terminals — confirms the medium-voltage isolation barrier is intact for the 3 kV class supply. Prospective line short-circuit current rated at 31.5 kA for 150 ms. Overvoltage category II per EN/IEC 61800-5-1.
Altitude and environment derating
Standard operating altitude is 1000 m. Above that, derate output current by 0.6 % per 100 m up to 2000 m. For a mill at 1500 m elevation, the effective current capability drops by 3 % — factor this into the motor sizing if the drive is already at the overload limit. Relative humidity range 0–90 % standard, 0–95 % optional. The drive includes ground fault protection and an integrated EMC filter.
I/O complement and control wiring
Four software-configurable analogue inputs (0–20 mA / 4–20 mA, 24 V max, 250 Ω impedance). One analogue output of the same type. Six discrete inputs standard, expandable to ten. The 220 V AC control supply requires a 3 kVA external transformer — not included in the drive cabinet. Main power connection via M10 screw-type bar terminals accepting 6 × 40 mm² cable, entry from bottom or top. The internal cooling fan supply is 380 V AC; an optional external 220 V AC/DC control supply is available.