The ATV1200A20806060 is a medium-voltage Altivar 1200 drive rated for 1739 kW motor power and 2080 kVA apparent power, fed from a 2970...3630 V supply through a 30-pulse diode rectifier bridge. The 30-pulse topology cancels the 5th, 7th, 11th, 13th, 17th, and 19th harmonics at the input — you can size the upstream transformer without the usual 30% derating for VFD harmonic content. Overload capability is published as two duty profiles: standard overload holds 1.2 x In for 60 s and 1.5 x In for 3 s; high overload holds 1.5 x In for 60 s and 1.85 x In for 3 s. The high-overload curve is the one to use for extruder or crusher starts where the breakaway torque exceeds 150% for several seconds.
Construction and integration constraints
The drive ships in a floor-standing enclosure with separate air flows for the power cells and the phase-shifting transformer. The enclosure footprint is substantial: standard-efficiency units measure 4660 mm wide x 1500 mm deep x 2670 mm high; high-efficiency variants add 300 mm to the width and 200 mm to the depth. Plan the substation floor layout around these dimensions before the unit arrives. Cooling is forced convection pulling 23,100 m³/h of air through the cabinet. The noise level at full fan speed is 80 dB — that is a hearing-protection zone inside the switchroom, not a quiet corner. The cooling fan supply is 380 V AC internal; an optional external 380 V fan supply is available for maintenance bypass.
CE marked and designed to EN/IEC 61800-3 (EMC environment), EN/IEC 61800-4 (thermal), and EN/IEC 61800-5-1 (electrical safety, pollution degree 2, overvoltage category II). The dielectric strength between power terminals and earth is 20 kV AC — a figure that matches the medium-voltage insulation coordination for a 3.3 kV class drive. The drive withstands a prospective line short-circuit current of 31.5 kA for 150 ms. This lets the upstream protection coordinate without an extra current-limiting reactor in most 3.3 kV distribution systems.