Medium-voltage drive for large asynchronous motors
The ATV1200A15701010 is a Schneider Electric Altivar 1200 medium-voltage variable speed drive rated for 1313 kW motor power at 1570 kVA apparent power. It accepts a supply voltage of 2970...3630 V AC through a 48-pulse diode rectifier bridge input stage. This is a floor-standing enclosure with separate air flows, measuring 1700 mm deep, 4260 mm wide, and 2670 mm high. The unit includes 24 power cells, a phase-shifting transformer, medium-voltage arrestors, cooling fans, and a human-machine interface as standard.
Overload capability and fault handling
Standard overload rating is 1.2 x In for 60 seconds or 1.5 x In for 3 seconds; a high-overload duty cycle allows 1.5 x In for 60 seconds or 1.85 x In for 3 seconds. This gives flexibility for starting high-inertia loads or clearing short-duration overload events without nuisance tripping. The drive withstands a prospective line short-circuit current of 31.5 kA for 150 ms, and dielectric strength between earth and power terminals is rated at 28 kV AC. Ground fault protection is integrated at the drive level.
Installation constraints and derating
Operating altitude is 1000...2000 m with a current derating of 0.6 % per 100 m above 1000 m. The drive must be mounted vertically within ±10 degrees. Forced convection cooling requires 23100 m³/h of air at standard efficiency. Electrical connection uses M10 screw-type bar terminals accepting up to 6 x 40 mm² cable per phase, with entry from the bottom or top. The control supply requires 220 V AC at 3 kVA externally; the cooling fan runs on 380 V AC internally.
Standards compliance and I/O
CE marked and designed to EN/IEC 60204-11, EN/IEC 60529, EN/IEC 61800-3, EN/IEC 61800-4, and EN/IEC 61800-5-1. Pollution degree 2 per EN/IEC 61800-5-1, overvoltage category II. An integrated EMC filter is included. The drive provides 4 software-configurable analogue inputs (0...20 mA / 4...20 mA, 24 V max, 250 Ohm impedance) and 1 analogue output of the same type. Digital inputs are 6 standard, expandable to 10 optional. Noise level is rated at 80 dB.