What this converter does in a drive system
The VW3A7254: Its primary job is low-harmonics energy regeneration: the AIC actively shapes the input current waveform to meet EN/IEC 61800-5-1, and it can return braking energy to the line instead of dumping it as heat in a resistor. The DC output voltage is 650 V DC from a 400 V AC supply, 720 V DC from 440 V AC, and 770 V DC from 480 V AC — this bus feeds common DC-bus drive configurations.
Sizing and thermal constraints for panel installation
Rated continuous output current is 412 A at both 400 V and 480 V, with overload capability of 1.20× nominal for 60 s or 1.35× nominal for 2 s — this sets the upstream breaker and cable sizing. Thermal losses are 4710 W, dissipated by forced convection requiring 1200 m³/h for the power circuit and 270 m³/h for the control circuit — the enclosure must provide at least 1000 cm² of free air flow surface. Operating altitude derating applies above 1000 m: 1 % current reduction per 100 m up to 3000 m. Ambient temperature range is -10 to 45 °C without derating, with a 2 % per °C derating from 45 to 60 °C.
Communication and control interface
The converter includes a communication bridge option card with one RJ45 for Modbus and one male SUB-D 9 on RJ45 for CANopen — both protocols are available on the same physical port. Pollution degree 2 per EN 61800-5-1 and environmental classification 3K3/3C2/3S2 per EN/IEC 60721-3-3 define the operating environment: controlled indoor with moderate temperature and humidity swings.
Lifecycle status and sourcing reality
No official successor or pin-compatible replacement is recorded from the manufacturer. For a BOM that requires this exact order code, the supply path is surplus or broker inventory.