bachmann NT250

• Input voltage range 18 to 34 VDC

• Provides all the necessary CPU voltages as well as supply for

modules on backplanes

• 45 W output power (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)

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)

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