BAR 65R-D3 Series IP66-rated Railway DC-DC Converters


DC-DC Power Converters, IP66-rated Power Solutions, Latest News, Railway Solutions, RIA12

Railway DC-DC converters with RIA12 input surge withstand capacity, IP66-rated protection, EN50155


RIA12 Railway converters with input voltage surge withstand capacity of 3.5VN for 20msec

300W IP66-rated railway DC-DC converters offer a waterproof, dust-proof, convection cooled solution

300W, RIA12 Railway DC-DC converters with IP66-rated environmental protection deliver a  waterproof, dust-proof, convection cooled solution (Click on photo for data sheet)

The BAR 65R-D3 (IP66) series of RIA12 railway DC-DC converters with IP66-rated protection deliver up to 300W output power. With an input voltage surge withstand capability of 3.5Vn for 20msec, the converters comfortably meet RIA12, the specification for the protection of traction and rolling stock equipment from transients and surges in DC control systems.

EN50155 for electronic equipment used on railway rolling stock

This design meets the requirements of EN50155 for electronic equipment used on railway rolling stock. With heavy filtering on the input and output, the converters comply with EN50121-3-2 electromagnetic compatibility requirements, ensuring minimal interference with the operation of other electronic devices. The converters also meet EN61000-4-2 (ESD), EN61000-4-3 (RF Immunity), EN61000-4-4 (Fast Transients), and EN61000-4-6 (Conducted Immunity).

Wide EN50155 input ranges

The BAR 65R-D3 units operate from a input voltages of 24Vdc (14.4-34V), 36Vdc (22-51V), 48Vdc (29-67V), 72Vdc (43-101V), 96Vdc (58-135V) or 110Vdc (66-154V). Single outputs include 12Vdc, 24Vdc, 48Vdc or 110Vdc. Custom input and output voltages are available on request. Regulation is better than 1% from no load to full load across all line and load conditions.

Comprehensive electronic protection

Comprehensive electronic protection includes 3kVdc input to output isolation, inrush current limiting and reverse polarity protection by internal crossbar diode at the input. They also have rectangular current limiting, overload, overvoltage and short circuit protection.

IP66-rated protection from ingress of moisture

The converters are enclosed in robust, waterproof, dust-proof, die cast aluminum IP66-rated packages that provide protection from the ingress of water from powerful jets, fog, sand, metal dust, dust, oil, insects and other contaminants. The input and output are via sealed cable glands, circular connectors or custom connections. Application-specific vents for pressure equalization ensure that pressure inside the enclosures is equalized, that the strain on connectors is minimized and the environmental seal remains impermeable.

Cooling by conduction and natural convection

Cooling is by internal conduction to the walls of the IP66 enclosure and by baseplate to an external chassis or cabinet wall, with additional convection via the outside surface. The units operate within a -25°C to +55°C cold plate temperature range for full specification.

Custom/customized designs

ABSOPULSE Electronics is an original equipment manufacturer (OEM) of an extensive range of rugged industrial and railway quality power conversion solutions. We specialize in fully custom solutions. All of our existing designs can also be modified to meet customer application requirements.

Key Specifications

  • 300W Railway quality DC-DC converters;
  • RIA12 input voltage withstand capacity (3.5Vn for 20msec);
  • Comply with EN50155;
  • IP66-rated diecast aluminum package;
  • Input: 24Vdc, 36Vdc, 48Vdc, 72Vdc, 96Vdc, 110Vdc (EN50155 ranges) ;
  • Output: 12Vdc, 24Vdc, 48Vdc or 110Vdc or custom;
  • Line/load regulation: ±1% zero-load to full-load;
  • EMI: EN50121-3-2;
  • Internal boards ruggedized and conformal coated;
  • Cooling: conduction and natural convection;
  • -25°C to +50°C operating temperature range for full specification;
  • Application-specific vents for pressure equalization (option);
  • D3 IP66 enclosure: 160 x 93 x 406 mm/6.3 x 3.66 x 16″ (W x H x D) – dimensions include baseplate and exclude connectors


Generic Data sheet – BAR-65R-D3 Railway DC-DC Converter

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