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PU21 - Wide-Range Railway Power Supply Unit, 100 to 240 VAC, 120 W
3U 6 HP PSU
The PU21 is a plug-in power supply unit for 19" systems (e.g. VMEbus, CompactPCI) and is fully compliant with EN 50155.
PU21 3U 6 HP Wide-Range PSU for Railway Systems, 100 to 240 VAC, 120 W
Main Features
- 3U, 6 HP, 19" rack mountable
- Input voltage range of 100 to 240 VAC
- Output power 120 W without derating
- Holdup time 20 ms
- Active power sharing
- Inverse current protection
- Redundant output voltage monitoring
- H15 rear connector
- -40°C to +85°C
- Conformal coating
- Fully EN 50155 compliant
Technical Data
Input Characteristics
- Nominal input voltage range: 100 VAC to 240 VAC
- Maximum input voltage range: 90 VAC to 264 VAC
- Maximum input power: 135 W
- Input frequency: 40 Hz to 440 Hz
- Standby voltage: 5 V
- Power-on/-off threshold
- Inrush current limiting
Output Characteristics
- Output voltages: 12.6 VDC, 5 VDC and 3.3 VDC
- Standby output voltage: 5 V with a 5 W load
- Accuracy: ±1.5% max. of the nominal value
- Holdup time: 20 ms (at an input of 100 V)
- Dynamic load distribution
- 120 W for complete temperature range without forced airflow
- Load sharing between 12.6 VDC output and 5 VDC output, including 3.3 VDC
Connection
Type H15, DIN 41612 plug connector
Status Indicator
Indicates
- Input power failure
- Output voltage failure
- Fail-over temperature
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
- Status LED on front panel
Electrical Specifications
- Isolation (according to EN 50155)
- Input/output: 3100 VAC
- Input/shield: 3100 VAC
- Output/shield: 1000 VAC
- According to EN 60950-1
Mechanical Specifications
- Dimensions: 3U, 6HP
- Integrated heat sink
Environmental Specifications
- Temperature range (operation): -40°C to +70°C, with up to +85°C for 10 minutes, compliant with EN 50155, class TX (model 17PU21-00), no derating
- Temperature range (storage): -50°C to +85°C
- Cooling concept
- Air-cooled, natural convection, or
- Air-cooled, forced convection with fan tray at system bottom
- Conduction-cooled in MEN CCA frame
- EMC Emission:
- EN 55022: CISPR 22 - Class B
- EMC Immunity: EN 55024 - Class A
- 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 (PCBs)
- UL 94 V-0
- Electrical Safety
- EN 60950-1
- Insulation measurement test according to EN 50155 (12.2.9.1)
- Voltage withstand test according to EN 50155 (12.2.9.2)
EMC Conformity
- 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)
Ordering Information
Standard PU21 Models
17PU21-00
120W, 3U 6HP PSU, wide range input 100 to 240VAC, output 12V/5/3.3VDC, -40°C to +85°C with qualified components, conformal coating