HFE2500 series

1U Rack Mount Modular AC-DC Power Supply

Operating from a universal 85 to 265Vac input, the HFE2500 features high efficiency of up to 93%, which minimises heat dissipation and power consumption. Up to ±20% output voltage adjustment is possible, enabling the HFE2500 to be customer set according to specific needs. Output voltage is programmable by resistance, external voltage or optional PMBus compatible I²C communication interface. Output current is external voltage or optional PM bus programmable.

The HFE2500-12, -24 and -48 power supplies, with dimensions of 325 x 107 x 41mm, can be used individually or up to four units can be mounted into a dedicated 1U rack delivering 10kW. A total of 8 units can be configured in parallel to form a hot swap N+1 redundant power system with single wire current sharing. A keying system prevents mis-insertion of modules into adjacent racks of differing voltage. Each power supply has variable speed, temperature-controlled cooling fans and can operate in temperatures ranging from -10 to +70°C.

Overvoltage, over current and over temperature are standard protection features. For system monitoring, there are signal returns for DC OK, AC-fail, over-temperature and PS exist. Remote ON/OFF control and remote sense are included. Monitoring is also available via the optional PMBus compatible I²C interface and includes a fan fail alarm.

The HFE2500 hot swap front end power supplies comply with EN55022 and FCC part 15 Class A radiated and Class B conducted emissions and meet IEC61000-4-2, -3, -4, -5, -6, -8, and -11 immunity. The power supply units are safety approved to EN/UL 60950-1 edition 2 with CE mark.

Main Features

  • Universal input 85 – 265VAC
  • 2500W 1U Hot Swap Rectifier Modules
  • Isolation diodes for N+1 Redundancy
  • Current share between modules
  • Status monitoring signals
  • Harmonic correction EN61000-3-2 ,Power Factor 0.95
  • EMC EN55022-B, Immunity to EN61000-4
  • International safety approvals EN60950, UL60950
  • Suitable for use in Battery Charging appl. ( >220Vac input)
  • PMbus™ communication interface and LAN options can be requested.

Series Table

Part numberPower (W)Output VoltageOutput CurrentI²C interface
HFE2500-12240012V200A
HFE2500-12/S240012V200AYes
HFE2500-24249624V104A
HFE2500-24/S249624V104AYes
HFE2500-48249648V52A
HFE2500-48/S249648V52AYes

Specifications Table

Input Voltage Range85 – 265VAC, 47 – 63Hz. See model selector for power derating
Input Current (Max) 100/230VAC17 / 12A
Inrush Current<50A
Power Factor CorrectionMeets EN61000-3-2, PF > 0.98 at full load
Hold-up time>10ms, 115/230VAC Input, 80% loading
Remote On/OffUnit ON: 0 – 0.6V or short, OFF: 2 – 15V or open circuit
Parallel OperationYes, single wire current share, 90% accuracy, up to 8 units
AC Fail SignalOpen Collector, ON when AC is within 85 – 270VAC
DC Good SignalOpen Collector, ON when output is above 85 to 95% of setpoint (tracking)
Remote AdjustBy either external 0 – 5V signal or 1k potentiometer
Operating Temperature -10°C to +70°C, derate 2%/°C from 50°C to 60°C, 2.5%/°C from 60°C to 70°C
CoolingTwo variable-speed internal fans, airflow exits across input/output connector
Size (W x H x D)Power Supply: 107 x 41 x 325, Rack: 445 x 44 x 402
WeightPower Supply: 2100g, Rack: 5000g
Warranty3 years

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