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PU8 - Power Supply Unit, 36 VDC, 100 W

3U 12 HP PSU

This product has been discontinued.

The PU8 is a plug-in power supply unit for 19" systems (e.g. VMEbus, CompactPCI) and is especially designed for computer systems in public transport vehicles, being fully compliant with EN 50155.

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  • PU8 Product ImagePU8 3U 12 HP Power Supply Unit PSU, 36 VDC, 100 W
  • PU8 Product Image

Main Features

  • 3U, 12 HP, 19" rack mountable
  • Input 36 VDC nom. (25.2 to 45 V)
  • Max. input voltage range 21.6 to 50.4 V (according to EN 50155)
  • Output 3.3 V, 5 V, 12 V
  • Power 100 W
  • H15 DIN41612 plug connector (front and rear)
  • SMBus
  • External I/Os for key input function
  • Standby mode (1 W max.)
  • -40 to +85°C screened
  • Conformal coating
  • EN 50155 compliant (holdup time according to Class S2) (railways)
PU8 Product Image

Technical Data

  • Output voltage and temperature supervision (readable via SMBus)
  • Overtemperature and overvoltage shutdown
  • Communication with CPU
  • Watchdog functionality
  • Independent power supply for operation during standby mode (power consumption less than 1 W)
  • Signals on back connector
  • Voltage level 3.3V
  • Controlled by CPU
  • Communication between the power supply unit and the CPU
Binary I/O
  • 1 binary input
    • Voltage level according to external power supply input voltage (max. 50.4 VDC)
    • Electrically isolated
    • External switch (key) with binary input
    • Switch-on by key input or wake on time
    • Switch-off by key input or software
    • Status of binary inputs readable via SMBus
  • 1 binary output
    • Voltage level according to external power supply input voltage
    • Isolated by relays
    • User-specific functionality (controllable via SMBus)
    • Maximum switching power: 60W (example 36V/1.6A)
  • DC/DC Converter
    • Fuse-protected
  • Two status LEDs on front panel
    • Green LED indicates correct input voltage
    • Yellow LED indicates correct output voltage
  • Alternative power supply at the backplane for use as redundant PSU
  • Short circuit protection
  • Reverse polarity protection by internal protector
Input Characteristics
  • Nominal voltage input: 36 VDC
  • Wide input range: 0.7 x nominal voltage < nominal voltage < 1.25 x nominal voltage (according to EN50155)
    • 25.2..45 VDC
  • Max. input voltage range: 0.6 x nominal voltage < nominal voltage < 1.4 x nominal voltage with full functionality for 0.1 s, no damage for 1 s (according to EN50155)
    • 21.6..50.4 VDC
  • No load input power: < 1.6 W in standby mode
Output Characteristics
  • Output power (max.): 100W
  • Output power (min.): 5W
  • 12V tolerance/overvoltage protection: ±5%
  • 5V tolerance/overvoltage protection: +5%/-3%
  • 3.3V tolerance/overvoltage protection: ±3%
  • Overtemperature shutdown: 50°..90°(adjustable by SMBus command)
  • Holdup time according to EN50155 Class S2
Input and output via DIN 41612 plug connector, type H15
Electrical Specifications
Isolation (according to EN50155)
  • Input/output: 1500VDC/1000V eff
  • Input/shield: 1500VDC/1000V eff
  • Output/shield: 1500VDC/1000V eff
  • Ground/shield: 1500VDC/1000V eff
Mechanical Specifications
  • Dimensions: 3U, 12HP, 128.4mm height
  • Integrated heat sink
  • Weight: 1.1 kg
Environmental Specifications
  • Temperature range (operation): -40..+85°C (no derating)
  • Temperature range (storage): -40..+85°C
  • Airflow: min. 10m³/h
  • Shock: according to EN60068-2-27
  • Continuous shock: according to EN60068-2-29
  • Vibration: according to EN60068-2-6
  • Protection
    • Class of protection: Class II, EN 60950
    • Degree of protection: IP20 (insert in rack), EN60529
190,000+ h @ 40°C according to IEC/TR 62380 (RDF 2000)
Tested according to EN55022 (radio disturbance), EN61000-4-2 (ESD), EN61000-4-4 (burst) and EN61000-4-5 (surge)
Software Support
  • Driver software for SMB communication for Windows, Linux, VxWorks
  • For more information on supported operating system versions and drivers see Software.

Ordering Information

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