Medium-voltage drive architecture for 719 kW motor loads
The Schneider Electric ATV1200A8606666 is an Altivar 1200 series medium-voltage AC drive rated for 719 kW motor power with a 2970-3630 V supply range. This is a 36-pulse diode rectifier input drive, which means the line-side harmonics are inherently low enough to meet IEEE 519 without external filters in most installations — a material advantage for a 860 kVA apparent power draw. The drive is built as a floor-standing enclosure with separate air flows for the power cells and control section, keeping electronics away from the thermal rise of the main power path. The product composition includes a phase-shifting transformer, 18 power cells, medium-voltage arrestors, cooling fans, and a human-machine interface — essentially a complete drive system in one cabinet.
Overload capability and motor protection profile
The overload withstand is specified in two duty classes: 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. This dual-profile lets the drive serve both constant-torque conveyors (standard overload) and high-breakaway-load applications like crushers or extruders (high overload) without oversizing the drive frame. Ground fault protection is integrated into the drive, and the dielectric strength between earth and power terminals is 20 kV AC. The prospective line short-circuit current withstand is 31.5 kA for 150 ms, meaning the drive's input section can ride through a fault upstream without self-destructing before the upstream protection clears.
Physical footprint and site planning constraints
The enclosure dimensions vary by efficiency variant: standard efficiency measures 3060 mm wide × 1400 mm deep × 2520 mm high; high efficiency measures 3360 mm wide × 1500 mm deep × 2670 mm high. The cooling air volume requirement is 13,200 m³/h for standard efficiency and 19,800 m³/h for high efficiency — this drives the HVAC sizing in the electrical room and must be accounted for in the ventilation design. The noise level is 80 dB, which may require hearing protection zones or acoustic enclosures in occupied spaces.
Standards compliance and regulatory acceptance
The drive carries CE marking and complies with EN/IEC 61800-3 (EMC), EN/IEC 61800-4 (harmonic), EN/IEC 61800-5-1 (safety), EN/IEC 60204-11 (electrical equipment), and EN/IEC 60529 (enclosure protection). Pollution degree 2 per EN/IEC 61800-5-1 confirms it is rated for controlled environments only — not for conductive dust or condensation-prone locations without additional enclosure protection. The integrated EMC filter simplifies installation compliance, and the electrical isolation between power and control circuits means the 24 V control wiring can be referenced to earth without ground loop issues.
Active production and sourcing posture
For a drive of this scale (719 kW, floor-standing cabinet), the procurement lead time is driven by the transformer and power cell assembly schedule — quoted per project milestone.