HR2320-9RG - 

The HR Series of DC-DC converters represents versatile power supplies ideally suited for use in transportation and other advanced electronic systems. Features include a very broad input voltage range, very high efficiency, high reliability, low output voltage noise, and excellent dynamic response to load/line changes. The converter inputs are protected against surges and transients. An input over- and under-voltage lockout circuitry disables the outputs if the input voltage is outside of the specified range. To avoid high input current at operation with high-voltage batteries, the inhibit input allows for adjusting of the under voltage lockout to a suitable level, thus allowing the use of an appropriate input fuse. The converters exhibit an inrush current limiter, preventing circuit breakers and fuses from tripping at switch-on. The outputs are open- and short-circuit proof. Full input-to-output, input-to-case, output-to-case, and output to output isolation is provided. The converters are particularly suitable for railway applications and can be supplied by all common railway batteries of 24 V, 36 V, 48 V, 72 V, 96 V,110 V, and 120 V nominal voltage. The converters comply with EN 50155 and EN 50121-3-2. The case design allows operation at nominal load up to 71 deg.C with natural cooling. If forced cooling is provided, the ambient temperature may exceed 71 deg.C, but the case temperature must remain below 95 deg.C. A temperature sensor generates an inhibit signal, which disables the outputs when the case temperature TC exceeds the limit. The outputs are automatically re-enabled when the temperature drops below the limit. LED indicators display the status of the converter and allow for visual monitoring of the system at any time. The converters may either be plugged into a 19" rack system according to IEC 60297-3, or be chassis mounted. Two heat sinks of different size and cooling plates for chassis mounting (option B, B1) are available.
Features

Extremely wide input voltage range from 12 to 168 VDC in the same model

Can be connected to all conventional railway batteries.

RoHS compliant

Class I equipment

Input over- and programmable under voltage lockout

Shutdown function

Inrush current limitation

10 ms hold-up time

Adjustable output voltages

2 independent, isolated outputs: no load, overload, and short-circuit proof

Rectangular current limiting characteristic

Parallel operation with active current sharing

Very high efficiency up to 94%

Immunity according to IEC 61000-4-2, -3, -4, -5, -6

ALL PCBs protected by lacquer

Very high reliability

Safety-approved according to IEC/EN 60950-1, UL/CSA 60950-1 2nd Ed. (in progress)