The Railway Challenge & New Fanless 600W Modular PSU

13th July 2016

Railway Challenge – Bombardier/Derby University Team

Congratulations to the Relec sponsored Bombardier/Derby University team entry into the Institute of Mechanical Engineers – Railway Challenge, to design and manufacture a miniature (10¼”) railway locomotive, in accordance with a set of rules and a technical specification. The team won the noise challenge for the quietest loco both on track and during start-up. They were also awarded the judge’s prize for a great effort for their first ever entry into the Railway Challenge competition. Relec supplied two AEK3000-48 3kW 48Vdc power supplies, each driving the 48V power bogie motors via controllers from the 230Vac on-board generator and energy storage system.

Relec has considerable experience in supplying railway approved power supplies and displays for trackside and train-borne applications, for more information please follow the link to the Railway page on our website.

New Fanless 600W Modular Power supply


The latest product to be added to the Relec portfolio is the CoolX600 NFF series; it is a new, revolutionary, convection-cooled modular power supply platform from Excelsys Technologies which delivers an incredible 600W without fan assisted cooling from a very compact 8.5 x 4.5 x 1U package. The only fanless modular power supply on the market, the CoolX600 offers system designers best in class efficiency and reliability in addition to the most comprehensive feature set and specifications available.


100% natural convection cooled
No internal or external fans required
No acoustic noise or vibration
MTBF > 400,000 hours
4kV line to PE surge protection
Reverse energy protection – no blocking diodes needed
24W standby power
Safety approved to 5000m
> 93% efficiency
5 year warranty

Up to 4 isolated dc outputs from 2.5V to 58Vdc
PMBus monitoring & control
Field configurable – true plug & play
Series/parallel outputs – provide higher voltage/current

Industrial: IEC 60950; IEC 62368-1; ISO 9000; SEMI F47
Medical: IEC 60601-1; IEC 60601-1-2; 2 MOPP; BF rated; ISO 13485
Defence: MIL-STD-810G; MIL-STD-461G, CE101, CE102

For further information or to discuss your application with one of our experienced team members please contact our technical sales team: e-mail or telephone 01929 555800.

John Stone

Sales Director

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