What this drive is built for
The ATV1200A11006363 is a medium-voltage AC drive from the Altivar 1200 series, rated for 853 kW motor power at 1020 kVA apparent power. It's designed for asynchronous and synchronous motors, so it covers induction machines and permanent-magnet motors on the same drive. Supply voltage limits are 2970-3630 V AC, fed through a 36-pulse diode rectifier bridge. That 36-pulse topology cuts line-side harmonics significantly compared to a 6- or 12-pulse front end — important when the utility or plant power quality specs require low total harmonic distortion (THD) without a separate active filter.
Overload capability and motor protection
Overload withstand is specified for two duty profiles. Standard overload: 1.2 x rated current for 60 seconds, or 1.5 x rated current for 3 seconds. High overload: 1.5 x rated current for 60 seconds, or 1.85 x rated current for 3 seconds. That high-overload curve suits applications like crushers or extruders where the motor needs to ride through a peak torque event without tripping. Ground fault protection is built into the drive itself, not just the upstream feeder. That means a phase-to-ground fault inside the motor cable or motor windings is detected and cleared by the drive's own protection circuits, without relying on the main breaker coordination. Dielectric strength is tested at 20 kV AC between earth and power terminals. That's a high-potential test that confirms the insulation system can handle the voltage stress of a medium-voltage drive installation.
Physical footprint and installation constraints
This is a floor-standing enclosure, not a panel-mount drive. Dimensions vary by efficiency version: standard efficiency measures 3360 mm wide x 2520 mm high x 1400 mm deep; high efficiency is 3660 mm wide x 2670 mm high x 1600 mm deep. The high-efficiency version also moves more cooling air — 19800 m³/h versus 16500 m³/h for standard efficiency. The enclosure is grey (RAL 7032), and the assembly uses separate air flows for the power section and control section — that keeps the control electronics cooler and reduces dust ingress into the sensitive parts. Operating altitude is 1000-2000 m with a current derating of 0.6 % per 100 m above 1000 m. If the drive is going into a high-altitude installation like a mine or a mountain processing plant, factor that derating into the motor current requirement.
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. That covers the machinery safety standard, enclosure protection, EMC emission and immunity, adjustable-speed drive performance, and functional safety requirements. Pollution degree 2 per EN/IEC 61800-5-1 means it's rated for normally dry, non-conductive environments where only occasional condensation occurs. Overvoltage category II applies to the power input — that's the standard for equipment plugged into a building's main supply. Prospective line short-circuit current is rated at 31.5 kA for 150 ms. That tells you the upstream protection devices must be coordinated to clear a fault within that window to keep the drive within its withstand rating.
Control I/O and feedback signals
The drive has 4 software-configurable analog inputs, accepting 0-20 mA or 4-20 mA current signals with 24 V max and 250 Ohm input impedance. That covers speed reference from a PLC analog output or a process transmitter. Discrete inputs number 6 standard, expandable to 10 with an optional module. These handle start/stop commands, fault resets, and speed presets. The analog output is also software-configurable for 0-20 mA or 4-20 mA, useful for feeding actual speed or load current to a remote indicator. Electrical connection uses M10 screw-type terminals with a clamping capacity of 6 x 40 mm² for the incoming line supply (/R, /S, L3/T). Entry can be from the bottom or the top of the enclosure — plan the cable routing before the drive is positioned.