Powerful solutions from Relec Electronics for power & displays
21 February 2019
This article explores two of the main product lines supplied by Relec Electronics, describing the exacting standards that the company’s products must fulfil in order to be acceptable and compliant with the standards applicable in the industries they serve.
Relec was set up in 1978 with the main objective of supplying specialist products and services to the professional communications, industrial and transportation markets.
Railway Approved Products – power conversion products
The industry demands especially high performance, flexible yet rugged products and Relec, together with Bel Power Solutions, have over 40 years’ experience in providing power conversion products.
Indeed, the roots of the product range and expertise are to be found in the brand name, Melcher, manufactured by Bel Power, which was originally a Swiss electronics specialist, until it became part of the Bel Power Group. The range centres on high performance AC/DC, DC-DC converters, DC-AC inverters, and displays and EMC filters compliant with national and international railway standards, EN50121-3-2 and EN50155.
AC/DC converters are often deployed in lineside applications, while DC-AC inverters are used to permit onboard AC equipment to be powered by the train’s DC power supply.
Available in a variety of power levels, with a wide range of input and output voltages, the products are designed to operate under extremely wide temperature ranges and include self-cooling enclosed cases.
Operating under what are often very arduous conditions, the products have high immunity to electrical, humidity and mechanical stress attributes, all of which contribute to delivering extremely high reliability.
A customer needed to simulate the 110VDC train-borne supply voltage from an AC supply. The solution needed to be quickly available and relatively easy to implement for an urgent requirement. The solution also needed to be robust enough to be installed in a mobile transit case without posing a reliability risk.
After extended discussions, a solution utilising the Excelsys Ultimod configurable power supply family was selected. The Ultimod series offers field proven reliability, a five-year warranty for peace of mind and, thanks to the flexible/configurable design of the product, the customer could receive their customised solution within 24 hours.
Product information on the Relec website is comprehensive, and the particular standard to which a product is compliant is listed. In addition, the product may also benefit from having been listed by Network Rail PADS (Parts and Drawing System).
Displays – rugged and high performance
It is easy to think that displays, hand-held or large, mounted units, are ‘standard’ in design and capability, as we are so used to treating the display on our laptop or PC as typical design standard. Not so!
Relec has over 30 years’ experience in providing monitors and displays for the most arduous of applications. Typical industries and applications served include rail, offshore, defence, marine and construction.
Displays are usually tailor-made to the application and may range in size from 4 inches to 42 inches, and may include custom built machined cases.
There is also a vast range of display technologies available to ensure that the product performs, whatever may be thrown at it – sometimes literally. The medical industry will demand anti-bacterial coatings for obvious reasons.
Monitors deployed in high use areas will need anti-finger marking treatments, and of a more general nature, other treatments include resistive touch, PCAP and anti-reflective coatings.
EMC Filters – an essential part of power supply applications
Relec can provide the major essential components in order to satisfy the requirements of a typical rail/industrial communication application, a great advantage in being able to provide the client with a broad range of highly qualified technical expertise at a single source.
EMC filters are often required to enable equipment to achieve compliance and operate in demanding environments, and Relec has a comprehensive range of the best EMC filters and chokes available.
The range of filters covers duties from 1A to 1100A for a variety of single and three phase applications, chokes and inductors for noise suppression and transient immunity protection, as well as power entry modules (PEMs) to combine IEC power entry with EMC noise suppression filters and immunity.
The company has been very deliberate and targeted in selecting a strategy of providing specialist products for demanding industries, and ensuring that they can offer the best technical support both at the design stage, and in after sales service, and, above all, the ability to offer industry compliant products to ensure safe and reliable operation.
Tel: 01929 555700
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