Medium-voltage drive for 560 kW motor loads
The Schneider Electric ATV1200A6706060 is a medium-voltage AC drive from the Altivar 1200 series, rated for 560 kW motor power with a supply voltage range of 2970 to 3630 V. This places it squarely in the medium-voltage drive class — not a 480 V unit — so the incoming supply and switchgear must match that voltage band. The 30-pulse diode rectifier bridge input inherently mitigates line-side harmonics below IEEE 519 thresholds without external filters — a real advantage when the plant power system has capacitor banks or sensitive loads on the same bus. Apparent power rating is 670 kVA, which sets the transformer and upstream breaker sizing. The prospective line Isc withstand is 31.5 kA for 150 ms — the upstream protection must coordinate to clear within that window.
Overload profile and duty selection
Two overload profiles are available: standard overload handles 1.2× In for 60 s and 1.5× In for 3 s; high overload handles 1.5× In for 60 s and 1.85× In for 3 s. The high-overload curve suits applications with heavy starting or intermittent peak loads — crushers, centrifuge drives, or extruders where the motor pulls above nameplate during the process cycle. The drive supports both asynchronous and synchronous motors, so it can run a PM motor retrofit or a standard induction machine from the same unit — useful when the driven equipment changes over the plant life. Speed range is listed as 20 to 100, likely a percentage of base speed — the lower bound of 20 % means the drive can regulate down to one-fifth of rated motor speed without instability, typical for fan and pump turndown.
Enclosure, cooling, and site prep
The drive ships in a floor-standing enclosure with separate air flows for power and control sections. Dimensions vary by efficiency option: standard efficiency measures 2860 mm wide × 1400 mm deep × 2590 mm high; high efficiency adds width to 3160 mm and height to 2740 mm, depth to 1500 mm. The footprint difference matters when the drive room has fixed column spacing or a door swing arc. Cooling is forced convection requiring 16,600 m³/h for standard efficiency and 19,900 m³/h for high efficiency. The HVAC system in the drive room must handle this exhaust volume plus the heat rejection — undersized ventilation is a common commissioning delay. Acoustic noise is 80 dB — hearing protection zones and enclosure acoustic treatment should be planned for the drive room layout.
Standards compliance and isolation
The drive carries CE marking and complies with EN/IEC 61800-3 (EMC), EN/IEC 61800-4 (adjustable speed drives), and EN/IEC 61800-5-1 (electrical safety). Pollution degree 2 per EN/IEC 61800-5-1 means it is rated for normal industrial environments with only non-conductive contamination — not for conductive dust or chemical spray. Electrical isolation between power and control is standard for medium-voltage drives — the control electronics ride on a separate ground reference, so the 24 V I/O loop does not share a fault path with the 3.3 kV power section. Dielectric strength is 20 kV AC between earth and power terminals — this is the hipot test voltage, not the operating voltage, and confirms the insulation system can withstand switching transients on the medium-voltage bus.
The 30-pulse topology and medium-voltage rating limit direct drop-in alternatives — no pin-compatible second source exists in the same footprint.