Tabletop power supply EA-PSI 5040-40A

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Overview
EA-PSI 5040-40A is a 640W microprocessor-controlled programmable desktop DC power supply for laboratory and industrial testing. It features a universal AC input (90–264 V AC, 45–65 Hz) with >0.99 active PFC, up to 92% efficiency, and an auto-ranging output stage that supports flexible operation across 0–40 V, 0–40 A and up to 640 W. The unit delivers industry-grade precision and stability, comprehensive protection functions, multiple remote-control options and a compact desktop form factor ideal for benchtop test systems.

Key Features

• Universal AC input: 90–264 V AC, 45–65 Hz; >0.99 active PFC.
• High efficiency: Up to 92% efficiency.
• Auto-ranging output: 0–40 V DC, 0–40 A, 0–640 W with power-regulated stage for voltage/current trade-off.
• Precision & stability: Voltage load regulation <0.08%, line regulation <0.02%, low ripple (<80 mVpp / <10 mVrms), <1 ms load response.
• Protections: OVP, OCP, OPP, OTP.
• Operation & memory: Blue LCD showing set/actual values, two knobs, five buttons, 9 preset memory groups.
• Remote control: Galvanically isolated analog interface, USB, Ethernet; SCPI, LabView VIs and Windows software support.
• Thermal management: Temperature-controlled fan for quiet, reliable cooling.
• Compact desktop housing: 200 × 87 × 331 mm, 4.3 kg.
• Compliance: SELV (EN 60950) for 40 V models; EMC EN 55022 Class B.

Specifications

• Manufacturer: EA
• Model: EA-PSI 5040-40A
• Article Number: HEA3588
• Manufacturer Code: 05100406
• AC Input: 90–264 V AC, 45–65 Hz
• Power Factor Correction: >0.99 active PFC
• Efficiency: up to 92%
• Output Voltage Range: 0–40 V DC
• Output Current Range: 0–40 A
• Output Power: 0–640 W (auto-ranging power stage)
• Characteristic Curve: U/I flexiranging (voltage/current trade-off within rated power)
• Voltage Load Regulation: <0.08%
• Voltage Line Regulation: <0.02%
• Voltage Ripple: <80 mVpp / <10 mVrms
• Load Regulation Time: <1 ms
• Voltage Accuracy: <0.2%
• Current Accuracy: <0.2%
• Power Accuracy: <1%
• Protections: OVP, OCP, OPP, OTP
• Display: Blue LCD showing set and actual values and status
• Memory: 9 preset memory groups
• Remote Interfaces: Galvanically isolated analog interface, USB, Ethernet
• Protocol / Software: SCPI command language, LabView VIs, Windows control software compatibility
• Cooling: Temperature-controlled fan
• Dimensions (W×H×D): 200 × 87 × 331 mm
• Weight: 4.3 kg
• Safety / EMC: SELV (EN 60950) for 40 V models; EMC EN 55022 Class B
• Front Panel Controls: Two knobs and five buttons
• Recommended Use: Laboratory and industrial test systems, automated test integration