AC 380V (323–437V) to 220VDC Charge Power Supply — AC/DC Converter with DC/DC BoostBuck (400W or 500W) What this product does Converts threephase AC supply nominally 380V (operates across 323–437VAC) to a stable 220V DC output. Functions as an AC→DC charge power supply and can also be used as a DC→DC boost/buck converter to regulate downstream DC voltage as required. Available in two power ratings: 400W and 500W to match different load and charging requirements. Key benefits — why you need it Reliable DC power from industrial AC mains: provides a direct 220VDC source where only 380VAC supply is available, simplifying system design. Wide input tolerance (323–437VAC): maintains operation through common mains fluctuations and across threephase industrial environments. Two power options (400W, 500W): choose the rating that fits your load or battery charging profile without overspecifying or underpowering your system. Dual functionality: serves both as a dedicated charge power supply and as a DC/DC boost or buck stage for voltage regulation, reducing the need for multiple separate converters. Core features and attributes Input voltage: AC 380V nominal, operating range 323–437V AC. Output voltage: 220V DC. Power ratings: selectable/available in 400W and 500W versions. Conversion modes: AC→DC charging supply and DC→DC boost/buck conversion capability. Intended use: charging applications and supplying 220VDC loads from 380VAC mains. Performance considerations: sized to support continuous power delivery at the stated wattage; choose the 400W or 500W model according to continuous load and expected charge current. Integration note: designed for installation into industrial or commercial power systems; consult the manufacturer's datasheet for exact mechanical dimensions, mounting and wiring details, and environmental ratings. Compatibility Designed for systems with an available 380VAC threephase source within the specified range (323–437VAC). Provides a 220VDC output compatible with equipment, battery banks, and DC loads that require 220V DC nominal. Can be used as part of DC bus architectures where a stable 220VDC is required and where additional DC/DC regulation (boost or buck) is needed downstream. Typical applications / use cases 1) Battery charging for 220V DC systems — Convert industrial 380VAC mains to a controlled 220VDC charge supply for battery banks in backup power, UPS, or telecom applications. Select 400W or 500W based on required charging power and battery specifications. 2) Powering 220VDC industrial equipment — Provide a direct 220VDC feed from a 380VAC plant supply for motors, control circuits, or process equipment that operate on DC. 3) DC bus regulation and voltage matching — Use the unit as a DC/DC boost or buck stage to match or regulate voltages between different DC subsystems (for example, integrating legacy 220VDC panels into a modern 380VAC infrastructure). Installation and selection tips Match the converter power rating (400W or 500W) to the continuous load and peak charging requirements; allow headroom for efficiency and thermal considerations. Verify mains voltage at installation site falls within the 323–437VAC operating window to ensure reliable operation. Follow manufacturer wiring diagrams and safety instructions for grounding, fusing, and thermal management. Refer to the product datasheet for mechanical dimensions, exact connection points, protection features, and environmental limits before installation. Safety and reliability Intended for professional installation in industrial or commercial power systems. Use appropriate protection devices, including input fuses or breakers and output protection as required by your system design. For full specification details, protection functions, and commissioning procedures, consult the manufacturer's technical documentation supplied with the unit. Ordering information Specify required power rating (400W or 500W) when ordering. Confirm input voltage environment (380VAC nominal, operating range 323–437VAC) and intended application (charging or DC supply) to ensure correct model selection.