Power

3000W front-end AC/DC power supplies target PoE applications

21st July 2015
Barney Scott

CUI Inc has announced the expansion of its 3000W front-end AC/DC power supply series with the addition of the PSE-3000-54, targeting Power over Ethernet (PoE) applications. The power supply is preset to output 54VDC with a factory-adjustable output from 42 to 55V, making the model suitable for a wide range of telecomms and networking applications.

Key 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 2.04W/cm3 and achieves Platinum efficiency (94% efficient at 50% load) in a compact standard 1U package measuring just 40.64x101.6x355.6mm.

The main 54VDC output delivers up to 55.5A with droop current sharing for paralleling of multiple units. The output is floating and features isolation of 1500VRMS 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. Additionally, standby outputs of 3.3 or 5VDC at 2A 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” power shelf is available to hold up to 4 power supplies for 12kW parallel operation, 9kW N+1 redundant operation, or dual 6kW “A” & “B” output channel operation. The DC output terminal blocks can be configured to be single or dual polarity.

Models with a user-adjustable output from 20 to 54V are also available upon request.

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