435 kW at 3.3 kV — medium-voltage drive for large asynchronous and synchronous motors
The ATV1200A5205555 is a Schneider Electric Altivar 1200 medium-voltage AC drive rated for 435 kW motor power with a supply voltage range of 2970...3630 V. This puts it squarely in the medium-voltage drive class, designed for large induction and synchronous motors in heavy industrial applications like pumps, fans, compressors, and conveyors where a step-down transformer and low-voltage drive would add cost and floor space. The 30-pulse diode rectifier input stage delivers low harmonic distortion — typically below 5% THD without external filters — which means it meets IEEE 519 requirements for most installations without added line reactors or active front ends. For a 520 kVA apparent power draw, that harmonic performance saves the cost of a dedicated harmonic filter cabinet.
The drive offers two overload profiles: standard overload at 1.2 In for 60 s or 1.5 In for 3 s, and high overload at 1.5 In for 60 s or 1.85 In for 3 s. The standard profile suits variable-torque loads like centrifugal pumps and fans where overload events are rare and brief. The high-overload profile handles constant-torque loads such as conveyors or extruders that need sustained starting torque or occasional overload capacity without tripping. The 65 A line current at 3.3 kV input gives a quick check for upstream breaker and cable sizing. Prospective line Isc withstand is 31.5 kA for 150 ms, so the input disconnecting means must be rated for that fault level — a standard 40 kA-rated vacuum contactor or breaker covers it with margin.
Floor-standing enclosure with separate air flows — installation planning
The drive ships in a floor-standing enclosure with separate air flows for the power section and control electronics. Forced convection cooling moves 16600 m³/h in the standard-efficiency configuration and 19900 m³/h in the high-efficiency version. That volume of warm exhaust air must be ducted out of the room or the HVAC system must handle the heat load — plan for a dedicated ventilation plenum above the drive. Physical footprint: 2860 mm wide by 1400 mm deep (standard efficiency) or 3160 mm wide by 1500 mm deep (high efficiency), with height at 2590 mm or 2740 mm respectively. That is a large cabinet — verify door swing clearance, overhead crane access for the transformer and cell modules, and floor loading capacity before the unit arrives on site. For installations above 2000 m, contact the factory for application engineering — the standard derating curve may not cover the full altitude range.
Control wiring and auxiliary supplies
Control power requires an external 220 V AC supply at 3 kVA. The cooling fan runs on a separate 380 V AC supply — either internal or external depending on the configuration. This split supply architecture means the control electronics stay live for diagnostics even when the main 3.3 kV input is disconnected, as long as the 220 V auxiliary is present. The drive provides 4 software-configurable analog inputs (0...20 mA / 4...20 mA, 24 V max, 250 Ohm impedance) and 2 analog outputs of the same type. Discrete inputs number 6 standard, expandable to 10 with an option. Electrical isolation between power and control circuits means the 24 V DC control loop can share a common with other PLC I/O without ground-loop issues — the dielectric strength between earth and power terminals is 20 kV AC.
Compliance and standards coverage
CE marked and designed to EN/IEC 61800-3 (EMC), EN/IEC 61800-4 (adjustable speed drives), EN/IEC 61800-5-1 (electrical safety), EN/IEC 60204-11 (safety of machinery), and EN/IEC 60529 (enclosure protection). Pollution degree 2 per EN/IEC 61800-5-1 means the drive is rated for normal industrial environments with only non-conductive pollution — no conductive dust or moisture ingress expected. Overvoltage category II covers equipment connected to the building wiring at the distribution level. The drive includes integrated ground fault protection and an integrated EMC filter. Noise level is 80 dB — hearing protection required within the enclosure perimeter during operation. Vibration resistance is 4.9 m/s² at 10...50 Hz, adequate for most industrial floor installations but not for direct mounting on reciprocating machinery without isolation mounts.