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DC DC converters for demanding railway applications

The UK rail network is under continuous improvement by the operators which creates certain demands on the type of DC DC power converters required. Especially critical is the requirement for suitably isolated units.

Relec Electronics is a specialist supplier of electronics solutions specifically selected and designed for applications in the Railway Industry. With over 38 years’ experience the company has a highly qualified engineering and QA team to ensure that the most suitable products are selected and can also offer customised design and manufacturing options to give greater flexibility to the range of solutions offered.

The company is pleased to announce the availability of a new DC DC converter from Mornsun, the URB1D-LMD-10/15/20WR3 series with improved isolation.

The units have a 40–160VDC ultra-wide input voltage with 2250VDC reinforced insulation meeting EN60950/EN50155 and are suitable for 72V, 96V and 110V railway electronic equipment such as monitoring equipment, air-conditioning control and information displays.

They provide an operating temperature of -40°C to +85°C and multiple protection (input under-voltage and output short-circuit, over-current, over-voltage protection).

The converters come in 2in x 1in standard package with two pin-out positions available. A2S (Chassis mounting) or A4S (DIN-Rail mounting) packages are also available, which have reverse voltage protection built in.

Key features
Ultra-wide voltage range: 40-160VDC
2250VDC reinforced isolation
Operating temp -40°C to +85°C
Low ripple and noise
International standard pin-out
Reverse voltage protection available with A2S (chassis mounting), A4S (35mm DIN–rail mounting)
Compliant with EN50155/EN60950 and EN50121-3-2

In addition to this range of DC DC converters Relec provides rugged high performance power conversion products, AC DC power supplies, DC AC inverters, Displays, EMC Filters and Vandal-Proof switches. Products offered for rail applications are compliant with national and international railway standards EN50121-3-2, EN50155. Furthermore Relec’s comprehensive and easy to navigate web-site shows the particular standard to which a product is compliant. In addition the product may also benefit from having been listed by Network Rail PADS (Parts and Drawing System).

Relec Electronics

At Relec Electronics the philosophy is to help design engineers build better solutions.

At Relec Electronics the philosophy is to help design engineers build better solutions.

We are proud to have one of the most comprehensive power supply ranges available, for both DC to DC and AC to DC applications. In addition, we offer a range of complementing products including EMC filters, switches and displays. Our aim is to build partnerships with customers and suppliers to both understand their requirements and to ensure a reliable supply of robust, yet technically advanced components that can be relied upon in the long term.

Power supplies, circuit protection and interface products form the backbone of our business. We work very hard to bring high-quality competitive products to the market, and our customers can be assured that any product we are promoting will not have reached them without full dialogue with the supplier together with a personal factory audit.

We believe the future is to offer our clients more choice thereby ‘adding value’ to their projects. This is achieved by offering custom products in all the lines we supply and by offering manufacturing services such as sub-assemblies and finished products. In our UK warehouse, we hold significant stocks of both standard and customer-specific parts and offer all the commercial services you would expect, including JIT, KANBAN, and specialist agreements tailored to suit individual customer needs.

Relec’s sales and technical support personnel, including our QA department, are all qualified engineers and are committed to ensuring that all aspects of our service meet and exceed today’s high expectations. We pride ourselves on providing extensive technical support for design engineers and full commercial support for our customers. By working with a limited number of manufacturers, who are leaders in their various technologies, Relec can provide the best solutions available.

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