Medium-voltage drive for 3.3 kV class motors
The ATV1200A5306363 is an Altivar 1200 medium-voltage AC drive rated for 376 kW motor power with a supply voltage range of 2970 to 3630 V AC — a 3.3 kV class input that drives standard asynchronous and synchronous motors in the 400-500 hp band. Apparent power rating is 450 kVA, and the 36-pulse diode rectifier bridge draws 65 A line current, keeping input harmonics low enough to meet IEEE 519 without external filters in most installations.
36-pulse topology and overload capability
The 36-pulse input stage cancels the 5th, 7th, 11th, and 13th harmonics at the transformer secondary — a meaningful advantage on a mill or pump drive where upstream transformer heating from harmonic currents shortens service life. Overload profile is configurable: standard overload handles 1.2× rated current for 60 s or 1.5× for 3 s; high overload mode extends to 1.5× for 60 s and 1.85× for 3 s, matching the duty cycle of a crusher or centrifuge start. Prospective line short-circuit withstand is 31.5 kA for 150 ms — the drive's internal fault-limiting design coordinates with upstream MV switchgear without requiring additional current-limiting reactors.
Physical layout and cooling demands
Assembled in a floor-standing enclosure with separate air flows for the power cell section and control compartment — the standard-efficiency variant measures 3060 mm wide × 1400 mm deep × 2520 mm high; the high-efficiency variant is slightly larger at 3360 mm × 1500 mm × 2670 mm. Forced-convection cooling moves 13200 m³/h (standard) or 16500 m³/h (high efficiency); the acoustic noise level at full fan speed is 80 dB — plan for hearing protection zones around the drive cabinet. Electrical connection uses M10 screw-type bars accepting up to 6 × 40 mm² conductors per phase, with cable entry from the top or bottom of the enclosure.
Compliance and production status
CE marked and designed to EN/IEC 61800-3 (EMC), EN/IEC 61800-4 (thermal), EN/IEC 61800-5-1 (safety), EN/IEC 60204-11 (electrical equipment), and EN/IEC 60529 (enclosure protection). Pollution degree 2 per IEC 61800-5-1, overvoltage category II. Lifecycle stage is current production — the ATV1200 series remains an active Schneider Electric catalog line with no announced end-of-life or successor. Ground fault protection is integrated into the drive, and the dielectric strength between earth and power terminals is tested at 20 kV AC.