Bachmann NT255 Power Supply Module

Description:

With the NT255, Bachmann electronic sets new standards for the power supplies of CPUs and backplane-supplied modules. As a result of intensive development work and in consideration of field experiences with several thousand supply modules, the NT255 combines long-term knowledge with the latest technologies. Best possible, selected components and lifetime optimized design form the reliable base for the module. Recent planar transformer technologies ensure significantly increased efficiency, while the integrated heat dissipation in the circuit board (»coolPCB technology«) prevents even minimal local warming and thus the early aging of components. Moreover, because of the extremely reduced weight of the parts, the module is even more robust against shock and vibrations.

Key Features:

• Input voltage range: 18 to 34 VDC
• Provides all the necessary CPU voltages as well as supply for modules on backplanes
• Output power: 45 W (55 W peak power)
• Galvanic isolation input / ground
• Galvanic isolation input / system
• Electronic reverse polarity protection
• 2 state indicators allow differentiation between supply failures and internal errors
• Monitored supply voltage
• Monitored output voltages
• Power-fail signal and state information for CPU module (processable from application)

Specifications:

Input:

• Voltage range: 18 to 34 VDC
• Input voltage, peak value: +40 V at t < 1 s / min
• Power consumption: Max. 68 W
• Reverse polarity protection: Electronic
• Starting current limitation: Max. 8 A after 5 ms
• Fuse: SMD wire fuse 7 A at device defect
• Input voltage monitoring: Yes, for power fail message

Output:

• Output power: 45 W (55 W)
• Output voltage / output current:
  • +5 V/ 6 A (8 A peak)
  • +15 V / 0.5 A
  • -15 V / 0.5 A
• Power-fail bypass: 18 ms, power-fail message after 3 ms

Monitoring:

• State indication: Power-fail on processor
• State display: LEDs (Power, Error, Ready)
• Galvanic isolation: 500 V (input / system), 100 V (input / ground)

Approvals / Certificates:

• General: CE, cULus, CCC
• Marine: DNV GL, LR, ABS, BV

Ambient Conditions:

• Standard: ColdClimate ( )
• Operating temperature: -30 to +60 °C
• Rel. humidity operation: 5 to 95 % without condensation; 5 to 95 % with condensation
• Storage temperature: -40 to +85 °C
• Rel. humidity storage: 5 to 95 % without condensation; 5 to 95 % with condensation
• Pollution degree: 2 (without condensation; according to IEC 60664-1) 2 (according to IEC 60664-1)

Dimension: 55 x 119 x 61mm

Weight:  300g