Medium-voltage drive for large asynchronous motors
The Schneider Electric ATV1200A147501010 is a medium-voltage AC drive from the Altivar 1200 range, rated for 12331 kW motor power at a 14750 kVA apparent power rating, supplied from a 2970–3630 VAC line. It uses a 48-pulse diode rectifier bridge input, which inherently reduces line-side current harmonics far below the levels a standard 6- or 12-pulse drive would produce — a practical advantage when feeding from a weak grid or trying to avoid a dedicated harmonic filter. The unit is assembled in a floor-standing enclosure with separate airflows for the power cells and control section, and forced-convection cooling moves 160000 m³/h of air at standard efficiency.
Overload profile and application fit
Overload capability is defined for two duty profiles: standard overload allows 1.2× rated current for 60 seconds or 1.5× for 3 seconds; high overload pushes to 1.5× for 60 seconds or 1.85× for 3 seconds. This split lets an integrator match the drive to either a constant-torque load (conveyor, extruder) needing the standard profile or a high-breakaway-torque application (crusher, mill) where the 1.85× short-term peak handles the start-up inertia without oversizing the drive frame. Output voltage tracks the supply voltage, so the motor terminal voltage is whatever the incoming line delivers — no step-up or boost inside the drive.
The drive ships as a complete assembly including the phase-shifting transformer, 24 power cells, cooling fans, medium-voltage arrestors, and the human-machine interface — the product composition is a matched system, not a standalone inverter.