Converter for HVAC applications. Frequency converter ATV212, EMC, IP21. Power KW 15 kW. Mains 380-480 V, 3-phase, 50/60 Hz, can be connected in series. No additional DC choke required (current distortion factor THDi < 35%). Class C2 integrated (with protection class IP 55 also Class C1 possible). Plug & Drive version for immediate commissioning after connection. Max. overload torque 120%. Integrated communication buses for building technology Modbus, BACNet, METASYS N2, APOGEE FLN. Pluggable option cards for LonWorks. Low Harmonic Technology (LHT) for environmentally friendly use. No accessories are required to reduce harmonic currents as required by the building regulations (no DC chokes, line chokes) THDi (current distortion factor) < 35% (IEC 61000-3-12 < 48%). Self-adaptation of acceleration and deceleration ramps to optimise energy consumption. Remote control terminal for self-adjustment of functions and remote loading/saving of configurations. Excellent resistance to difficult environmental conditions (50°C in continuous operation).