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PU20 - Wide-Range Power Supply Unit for Railway Systems, 24 to 110 VDC, 120 W

3U 6 HP PSU

The PU20 is a plug-in power supply unit for 19" systems (e.g. VMEbus, CompactPCI) and is fully compliant with EN 50155.

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  • PU20 Product ImagePU20 3U 6 HP Wide-Range PSU for Railway Systems, 24 to 110 VDC, 120 W
  • PU20 Product Image

Main Features

  • 3U, 6 HP, 19" rack mountable
  • Wide range input 24 V DC to 110 V DC nominal
  • Configurable voltage range for 24, 36, 48, 74, 96 V DC
  • Output power 120 W without derating
  • Holdup time 10 ms according to Class S2
  • Active power sharing
  • Inverse current protection
  • H15 rear connector
  • -40 to +85 °C with qualified components
  • Conformal coating
  • Input voltage according to S-9401
  • EN 50155 compliance
PU20 Product Image

Technical Data

Input Characteristics
  • Nominal voltage input: 24 V, 36 V, 48 V, 72 V, 96 V, 110 V (according to EN50155)
    • Max. input power range of 14.4..154 VDC
    • Configurable voltage range for 24, 36, 48, 74, 96, 110 VDC or wide range
    • Power-on/-off threshold according to EN 50155
    • Nominal input voltage of 74 VDC provided (according to S-9401)
    • Voltage range for 74 VDC is 20..130 VDC
    • Power-on/-off threshold according to EN 50155
  • Power Variations
    • No functional disturbance with input voltage variations according to EN 50155
  • Inrush current peak: 35 A for max. 150 ms at 24 VDC input voltage
Output Characteristics
  • Output voltages: 12.6 VDC, 5 VDC and 3.3 VDC
  • Output currents: 9.5 A for 12.6 VDC, 24 A for 5 VDC and 9.1 A for 3.3 VDC
  • Total maximum power consumption: 120 W
  • Standby output voltage: 5 VDC with a 5 W load
  • Accuracy:
    • +3.3V (-1%/+1% of the nominal value)
    • +5V (-1%/+1% of the nominal value)
    • +12.6V (-1%/+1.5% of the nominal value)
    • +5VSB (-1%/+1% of the nominal value)
  • Holdup time: 10 ms according to Class S2
  • Dynamic load distribution
    • 120 W for complete temperature range without forced airflow
    • Load sharing: 220 W with 2 PSUs, 330 W with 3 PSUs
Front Interfaces
1 Status LED
Rear Interfaces
  • Type H15, DIN 41612 plug connector
  • Overtemperature, PS_ON and power good signal for input and output
Parallel Connection
Up to six power supply units can be used in parallel
  • Extends availability (backup protection against faults)
  • Extends power
  • Increases performance
  • Ensures redundancy
Miscellaneous
  • Overload and short circuit protection
  • Standby voltage at power down, always available
  • Reverse polarity protection for input voltage and short circuit
  • Output voltage and temperature supervision
  • Overtemperature and overvoltage shutdown
Electrical Specifications
Isolation (according to EN 50155)
  • Input/output: 3100 VAC
  • Input/shield: 3100 VAC
  • Output/shield: 1000 VAC
Mechanical Specifications
  • Dimensions: 3U, 6HP
  • Integrated heat sink
  • Weight: 630 g
Environmental Specifications
  • Temperature: -40° to 70°C, with up to 85°C for 10 minutes according to class Tx (EN 50155)(assembled in the rack)
  • Temperature range (storage): -50..+85°C
  • Airflow: Convection cooling
  • Cooling test according to EN 60068-2-1
  • Dry heat test according to EN 60068-2-2
  • Shock: 50 m/s², 30 ms (EN 61373)
  • Vibration (function): 2.02 m/s², 5 Hz - 200 Hz (EN 61373)
  • Vibration (lifetime): 11.44 m/s², 5 Hz - 200 Hz (EN 61373)
MTBF
min. 600 000h @ 40°C according to IEC/TR 62380 (RDF 2000)
Safety
  • Flammability
    • PCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
  • Fire Protection
    • EN 5510-2
  • Electrical Safety
    • EN 60950-1
    • UL 60950-1 (UL certification no: Dk-52670-UL)
    • CAN/CSA C22.2
    • Insulation measurement test according to EN 50155 (12.2.9.1)
    • Voltage withstand test according to EN 50155 (12.2.9.2)
EMC
  • EMC line filter required to reach class B for radiated and conducted emissions
  • EMC Emission:
    • EN 55022: CISPR 22 - Class A
    • FCC 15.109 and S-9401
  • EMC Immunity: EN 55024 - Class A
  • EN 50121-3-2 (EMC of rolling stock)
  • EN 55011 (radio disturbance)
  • IEC 61000-4-2 (ESD)
  • IEC 61000-4-3 (electromagnetic field immunity)
  • IEC 61000-4-4 (burst)
  • IEC 61000-4-5 (surge)
  • IEC 61000-4-6 (conducted disturbances)

Options

Input Voltage Range
9 VDC to 36 VDC (on request)
Cooling Concept
On request also available with conduction cooling in MEN CCA frame
Some of these options may only be available for large volumes.
Please ask our sales staff for more information.

Ordering Information

Standard PU20 Models
17PU20-00

120 W, 3U 6 HP PSU, wide range input 24 to 110 V DC, output 12 V / 5 V / 3.3 V DC, -40..+85°C qualified, conformal coating