Medium-voltage drive for synchronous and asynchronous motors
The Schneider Electric ATV1200A52505555 is a medium-voltage AC drive from the Altivar 1200 series, rated for 4389 kW motor power with a supply voltage range of 2970...3630 V and an apparent power of 5250 kVA. It drives both synchronous and asynchronous motors, making it a fit for large pump, fan, compressor, and conveyor applications in heavy industry. The input stage uses a 30-pulse diode rectifier bridge, which significantly reduces line-side harmonics compared to 6- or 12-pulse topologies — a key consideration for installations where IEEE 519 compliance is required without external filters. The drive is assembled in a floor-standing enclosure with separate air flows for power and control sections, rated for forced convection cooling moving 80000 m³/h at standard efficiency. The enclosure measures 3040 mm high by 7770 mm wide by 1800 mm deep — this is a large-format installation that needs a dedicated equipment room or pad.
Overload profile and protection coordination
The overload withstand capability is defined for two duty classes: standard overload allows 1.2× In for 60 s and 1.5× In for 3 s; high overload allows 1.5× In for 60 s and 1.85× In for 3 s. This dual profile lets the drive handle starting surges and short-term process overloads without oversizing the drive for the continuous load. Ground fault protection is built into the drive, and the dielectric strength between earth and power terminals is 20 kV AC. The prospective line short-circuit current rating is 31.5 kA for 150 ms — this sets the upstream breaker and fuse coordination requirements. The drive is designed for pollution degree 2 environments per EN/IEC 61800-5-1, and the overvoltage category is II. Operating altitude derating starts at 1000 m with a 0.6 % reduction per 100 m above that, which matters for installations at higher elevations.
Control supply and I/O configuration
The control section requires an external supply at 220 V AC, 3 kVA, with an optional 220 V AC/DC supply. The cooling fan has its own internal 380 V AC supply, with an optional external 380 V AC feed. Electrical isolation is maintained between power and control circuits. The drive includes 4 software-configurable analogue inputs (0...20 mA / 4...20 mA, 24 V max, 250 Ω impedance) and 2 analogue outputs with the same current ranges. Discrete inputs are 6 standard, expandable to 10 with an option. The I/O complement is sufficient for basic speed reference, feedback, and run/stop control without an external PLC for simple applications.
Standards compliance and lifecycle status
The ATV1200A52505555 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. An integrated EMC filter is included. The noise level is rated at 80 dB — hearing protection is required within the equipment perimeter.