Comparison · Power supplies

MeanWell EPP-500-54 or ±35 V 500 W power supply

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Efficiency: MeanWell EPP-500-54 (95 % vs. 91.6); No load: MeanWell EPP-500-54 (1.5 W vs. 3.3); Temperature rise: MeanWell EPP-500-54 (115 °C vs. 146).

Model	MeanWell EPP-500-542021Read review →	±35 V 500 W power supply2018Read review →
Voltage, V	54	35
Power, W	500	500
Efficiency, %	95	91.6
No load, W	1.5	3.3
Temperature rise, °C	115	146
Review conclusion	Recommended	With reservations

Only in one review: In test 550 W (MeanWell EPP-500-54); Test current 11.3 A (MeanWell EPP-500-54); Under load 29.44 V (±35 V 500 W power supply); Ripple 150 mV (MeanWell EPP-500-54); Protection 11.3 A (MeanWell EPP-500-54).

MeanWell EPP-500-54: The compact PSU showed high efficiency and acceptable ripple, but the transformer gets noticeably hot under heavy load.

±35 V 500 W power supply: Well built, but sustains only 250–300 W; active cooling is needed for 500 W.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.