The ATV1200A4305555 is a medium-voltage variable speed drive from the Altivar 1200 family, rated for 430 kVA apparent power and 359 kW motor output. That power class targets large synchronous or asynchronous motors — think high-inertia loads like mine conveyors, mill drives, or large pumps where the starting torque and speed range (20…100%) need a drive that can handle sustained overload. Supply voltage limits are 2970…3630 V AC, fed through a 30-pulse diode rectifier bridge — the high pulse count cuts line-side harmonics well below IEEE 519 thresholds without external filters. The integrated EMC filter further simplifies panel compliance.
Overload profile and duty cycle
Two overload profiles are available: standard overload handles 1.2× In for 60 s and 1.5× In for 3 s; high overload pushes to 1.5× In for 60 s and 1.85× In for 3 s. That means the drive can ride through short-duration peak torque demands — a crusher jam or a cold-start high-viscosity pump — without tripping, as long as the duty cycle stays within those time limits. The drive is built as a floor-standing enclosure with separate air flows for power and control sections, keeping heat away from the electronics. Forced-convection cooling moves 16,600 m³/h (standard efficiency) or 19,900 m³/h (high efficiency) of air, so the installation site needs adequate ventilation clearance — the 80 dB noise level means ear protection near the unit during operation.
I/O complement and control supply
Six discrete inputs (expandable to 10) and four software-configurable analog inputs (0…20 mA / 4…20 mA, 24 V max, 250 Ω impedance) give the commissioning engineer enough channels for basic speed reference, start/stop, and fault reset without an extra I/O module. Two analog outputs mirror the same current range for retransmission to a PLC or remote meter. Control power comes from an external 220 V AC, 3 kVA supply; the cooling fans run off a separate 380 V AC feed. This split means the control electronics stay alive even if the main power is off — useful for diagnostics or pre-charge sequencing. An optional 220 V AC/DC control supply is also listed.
Physical footprint and site preparation
The enclosure dimensions vary with efficiency grade: standard efficiency measures 1400 mm deep × 2860 mm wide × 2590 mm high; high efficiency adds depth to 1500 mm, width to 3160 mm, and height to 2740 mm. That is a large footprint — plan for a dedicated equipment room with a reinforced floor and overhead lifting points for the transformer and power cells. Electrical connection is via M10 screw-type bars, accepting up to 6 × 40 mm² cable per phase, entry from top or bottom. The prospective short-circuit current rating is 31.5 kA for 150 ms, so upstream protection must coordinate within that window.
CE marked and designed to EN/IEC 60204-11, EN/IEC 60529, EN/IEC 61800-3 (EMC), EN/IEC 61800-4, and EN/IEC 61800-5-1 (safety). Dielectric strength between earth and power terminals is 20 kV AC — a strong margin for medium-voltage isolation.