PU1
Power Supply Unit, 110 VDC, 75 W
Hauptmerkmale
- 19" rack mountable (VMEbus, CompactPCI)
- 3U, 12 HP
- Input 110 VDC nom. (77..137.5 V)
- Max. input voltage range 66..154 V (according to EN 50155)
- Output 5.1 V
- Power 75 W
- H15 DIN 41612 plug connector (front and rear)
- -40 °C to +85 °C without derating
- Conformal coating
- Complies with EN 50155 (railways)
The 3U 12HP power supply unit PU1 is a plug-in device for 19" systems (e.g. VMEbus, CompactPCI) and is especially designed for railway computer systems, being fully compliant with EN 50155.
The 1.5 kV (effective) optically isolated PSU comes with a nominal input voltage of 110 VDC with a wide input range of 77..137.5 V (max. input voltage range 66..154 V according to EN50155) and a single output of 5 V at 75 W. It works up to +85°C without derating, delivering a thermal warning at over-temperature andswitching off at +95°C.
The PSU supports an error signal (5 ms hold-up time), reverse-connect protection, permanent short-circuit protection, voltage control, synchronization, voltage in fail (ViF) and voltage out fail (VoF) as well as remote on/off.
The subassembly is immersion-painted und partially cast, and components are secured against vibration. The thermal stress is extremely low due to integrated heat sinks and diversion of dissipated heat over the mounting surface.
- Standard Euro rack size 19"
- Integrated heat sink for extremely low thermal stress to temperature sensitive components
- Glued parts for better vibration resistance
- Overtemperature and overvoltage shutdown
- Short circuit protection
- Remote on/off
- LEDs: green LED indicates correct input voltage, yellow LED indicates operating mode
- Fixed switching frequency 200kHz
- Reverse polarity protection by internal protector
- Thermal Warning (TW)
- Operating criteria: Overtemperature shutdown -5K (Risk of overtemperature exists.)
- Output TW: Output with NPN transistor, emitter connected with V out-; max. current 30mA
- Hold-up Time
- According to EN 50155 Class S2 for P out 75W
- Supply Fail (FAL)
- Output FAL: Isolated optocoupler output with NPN transistor
- Current: 5mA
- Voltage max.: 5V
- Pins: Open collector FAL, emitter FAL connected to V out-
- Isolation: FAL-V in: 1.500 Vrms
- Sense (S)
- Provides compensation of voltage drops (max. 0.2V each line) between power supply and load
- Pins S+ and S- of converter must be connected to load
- Shutdown interrupt (SD-INT)
- SD-INT in: 24V
- SD-INT out current: 5mA
- SD-INT out voltage: 5V
- SD-INT out pins: Collector pull-up resistor 10K to V out+
- SD-INT out isolation: SD-INT in to SD-INT out: 1.500 Vrms
- Nominal voltage input: 110V DC
- Wide input range: 0.7 x nominal voltage < nominal voltage < 1.25 x nominal voltage (according to EN 50155)
- 77..137.5 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 EN 50155)
- 66..154 VDC
- Voltage on threshold: 1.1V
- No load input current: 15mA
- Output: 5V/75W
- Accuracy: ±0.5%
- Voltage deviation: 12%
- Rise time: 80ms
- Overvoltage protection: 1.2V
- Overcurrent protection: 1.08A min., 1.15A max.
- Overtemperature shutdown: 101°C min., 105°C typ., 107°C max.
- Isolation
- Input/output: 1500V eff
- Input/case: 1500V eff
- Output/case: 500V eff
- MTBF: tbd. @ 50°C (derived from MIL-HDBK-217F)
- Dimensions: 3U, 12HP, 128.4mm height
- Weight: ca. 1395g
- Temperature range (operation): -40..+85°C
- Temperature range (storage): -40..+105°C
- Shock: according to IEC 68-2-27
- Continuous shock: according to IEC 68-2-29
- Vibration: according to IEC 68-2-6
- Protection
- Class of protection: Class I, EN 60950
- Degree of protection: IP20 (inserted in rack), DIN 40050 (IEC 529)
- Pollution degree: 2 (EN 60950)