3 kW Platinum front-end AC/DC PSU for Power over Ethernet

July 24, 2015 // By Graham Prophet
CUI has added to its N+1 Hot-Swap series of AC-input power supplies with the addition of a 54 Vdc output version.

A 3000 W front-end AC-DC power supply, the PSE-3000-54 is designed for Power over Ethernet (PoE) applications. The power supply is preset to output 54 Vdc with a factory-adjustable output from 42V to 55V, making the model also suitable for a wider range of telecom and networking applications. Features include N+1 redundancy and hot swap blind-docking capability implemented through the use of a single connector that integrates AC, DC and I/O signals. The PSE-3000-54 delivers a power density of 33.48 W/cubic inch and achieves Platinum efficiency (94% efficient at 50% load) in a standard 1U package measuring 1.6 x 4 x 14 in. (40.64 x 101.6 x 355.6 mm).

The main 54 Vdc output delivers up to 55.5A with droop current sharing for paralleling of multiple units. The output is floating and features isolation of 1500 Vrms specifically for PoE applications. For monitoring and control of the module, the PSE-3000-54 features system communications via I²C/PMBus protocol. For maximum flexibility, the series is available in front-to-back or back-to-front airflow configurations depending on the application’s cooling requirements. Standby outputs of 3.3 Vdc or 5 Vdc at 2 A are provided. The PSE-3000-54 also offers 60950-1 safety approvals, bears the CE Mark, and complies with all applicable EMC requirements to accommodate world wide applications. Protections for over-voltage, over-current, over-temperature, and input under-voltage are standard.

An optional 1U 19 in. power shelf is available to hold up to four power supplies for 12 kW parallel operation, 9 kW N+1 redundant operation, or dual 6 kW “A” & “B” output channel operation. The DC output terminal blocks can be configured to be single or dual polarity.

CUI; www.cui.com