5267 kW medium-voltage drive with 36-pulse input
The Schneider Electric ATV1200A63006666 is a medium-voltage AC drive from the Altivar 1200 series, rated for 5267 kW motor power with 6300 kVA apparent power. The 36-pulse diode rectifier bridge input significantly reduces line harmonics compared to 6- or 12-pulse topologies, often eliminating the need for external harmonic filters in utility compliance studies. Supply voltage range is 2970...3630 V, placing it squarely in the 3.3 kV medium-voltage class. Output voltage tracks the supply voltage, so the motor sees the same voltage class as the input — no step-down transformer needed between drive and motor for a 3.3 kV machine.
Physical footprint and cooling infrastructure
Cooling is forced convection moving 90000 m³/h of air — the facility HVAC must handle this heat rejection, and the air intake/exhaust louvres need to be sized for the full airflow without backpressure. Noise level is 80 dB, so hearing protection zones and acoustic treatment are part of the site plan.
Overload capability and duty cycle
The drive offers two overload profiles. Standard overload: 1.2× rated current for 60 seconds or 1.5× for 3 seconds. High overload: 1.5× for 60 seconds or 1.85× for 3 seconds. For a 5267 kW motor driving a high-inertia load like a centrifuge or ball mill, the high-overload profile provides the starting torque margin without oversizing the drive frame. Speed range is 20...100%, meaning the drive delivers full torque down to 20% base speed — adequate for most pump, fan, and compressor applications. Below 20% speed, additional cooling or a separate blower motor may be needed for the driven motor.
Product composition and modular architecture
The ATV1200A63006666 consists of 18 power cells, a phase-shifting transformer, medium-voltage arrestors, cooling fans, a human-machine interface, and two plinths. The modular cell topology means a single failed power cell can be replaced without decommissioning the entire drive — the remaining 17 cells continue running at reduced capacity until the replacement arrives. Electrical connection is via M10 screw-type bars accepting up to 6 × 40 mm² cable per phase, entry from top or bottom. This allows both top-entry cable trays and bottom-entry trench routing — the site electrical contractor needs to coordinate the cable entry direction before the enclosure is set in place.
Standards, approvals, and environmental limits
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. These cover electrical equipment safety, enclosure protection, EMC emissions/immunity, and adjustable-speed drive performance — sufficient for European CE-marked installations and accepted in most global markets under mutual recognition. Operating altitude is 1000...2000 m with 0.6% current derating per 100 m above 1000 m. At 2000 m elevation, derate continuous current by 6%. Pollution degree 2 per EN/IEC 61800-5-1 means the drive is suitable for clean industrial environments with only non-conductive dust — not for outdoor or heavy-contamination sites without additional enclosure protection. Lifecycle status is current production.