The ATV1200A20204242 is a Schneider Electric Altivar 1200 medium-voltage variable-frequency drive rated for 1689 kW motor power and 2020 kVA apparent power, supplied from a 2970…3630 V three-phase line through a 24-pulse diode rectifier bridge. It drives both asynchronous and synchronous motors, with the output voltage limited to the supply voltage level. The 24-pulse input topology reduces line-side harmonics to meet IEEE 519 without external filters — a key differentiator for installations with weak utility ties or existing power-factor correction.
Physical footprint and construction
The drive ships as a floor-standing enclosure with separate air flows for the transformer and power cells. Standard-efficiency units measure 1500 mm deep × 4360 mm wide × 2740 mm high; high-efficiency variants add 200 mm to depth and 300 mm to width. The assembly includes two plinths, a phase-shifting transformer, medium-voltage arrestors, cooling fans, a human-machine interface, and 12 power cells. Electrical connection is via M10 screw-type bar terminals accepting up to 6 × 40 mm² conductors, with entry from the bottom or top.
Protection, withstand, and overload capability
The drive offers a standard overload of 1.2 In for 60 s and 1.5 In for 3 s; the high-overload profile pushes to 1.5 In for 60 s and 1.85 In for 3 s — the higher profile suits applications with cyclic peak loads like crushers or extruders. Dielectric strength is tested at 20 kV AC between earth and power terminals, and the prospective line short-circuit current withstand is 31.5 kA for 150 ms — meaning the drive's input section can ride through a bolted fault on the medium-voltage bus until upstream protection clears. Ground fault protection is built into the drive, and the enclosure provides IP2X-level touch protection (pollution degree 2 per EN/IEC 61800-5-1).
The drive carries CE marking and complies with EN/IEC 60204-11, EN/IEC 60529, EN/IEC 61800-3, EN/IEC 61800-4, and EN/IEC 61800-5-1 — covering electrical safety, enclosure protection, EMC emission/immunity, and functional safety of adjustable-speed drives. Overvoltage category II per EN/IEC 61800-5-1 applies, confirming the drive is intended for fixed installations downstream of a transformer.
Control interface and I/O
Four software-configurable analogue inputs (0…20 mA / 4…20 mA, 250 Ω impedance, 24 V max) and two analogue outputs (same ranges) handle process setpoints and feedback. Six discrete inputs are standard, expandable to ten. Electrical isolation between power and control circuits is standard, protecting the low-voltage control wiring from the medium-voltage bus.
Cooling, noise, and environmental limits
Forced convection cooling moves 33,200 m³/h of air through the enclosure — standard and high-efficiency variants share the same airflow. The noise level at full fan speed is 80 dB, so ear protection is warranted in the drive room. The drive operates in 0…90 % relative humidity (0…95 % optional) and at altitudes from 1000 m to 2000 m with a 0.6 % current derating per 100 m above 1000 m. Operating position is vertical ±10°.