PU1 - 3U 12HP PSU for 19″ systems, 110 VDC nom.

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

Input Characteristics

Nominal voltage input: 110V DC

Wide input range: 0.7 x nominal voltage < nominal voltage < 1.25 x nominal voltage (according to EN50155)
• 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 EN50155)
• 66..154 VDC

Voltage on threshold: 1.1V

No load input current: 15mA

Output Characteristics

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.

Connection

Input and output via DIN 41612 plug connector, type H15

Electrical Specifications

Isolation
• Input/output: 1500V eff
• Input/case: 1500V eff
• Output/case: 500V eff

MTBF: tbd. @ 50°C (derived from MIL-HDBK-217F)

Mechanical Specifications

Dimensions: 3U, 12HP, 128.4mm height

Weight: ca. 1395g

Environmental Specifications

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)

Safety

Tbd.

EMC

Tbd.