Our website features a wide range of standard power conversion and backup products, but we also have the capacity and capability to design and manufacture custom solutions to meet your specific application needs. Contact our team of experienced engineers today to discuss your project. Dismiss
This fully encapsulated, rugged, railway quality DC/DC converter uses field-proven technology to generate between 250 ~ 300W, depending on the input/output combination required. It is a mature design with a track record in numerous applications. The unit is entirely potted with a thermally conductive MILgrade silicon rubber compound to ensure immunity to shock, vibration and humidity.
It is conduction-cooled via a base plate to a heatsinking surface. Low component count, large design headrooms, and the use of components with established reliability result in a high MTBF. The unit meets the requirements of EN50155 for electronic equipment used on rolling stock.
Helios power supplies are ruggedly constructed and can be customized for specific mechanical requirements. Standard mechanical packages and ruggedization options include:
Model | Standard Outputs | Power (W) |
RWY259 | 5V 12V 24V 36V 48V 72V | 150W 250W 300W |
Operating input voltage range | 24VDC ( 14.4 ~ 34 ) 36VDC ( 22 ~ 51 ) 48VDC ( 20 ~ 67) 72VDC ( 43 ~ 101) 96VDC ( 58 ~ 135) 110VDC ( 66 ~ 154) |
Input Protection | Reverse polarity protection.Inrush current limiting Lower voltage than specified will not damage unit |
Output Voltage | See table |
Regulation | ±1% Line / Load combined |
Operating Temp: | -40ºC to +70ºC cold plate temperature |
Efficiency | Model dependent , typically 80-90% |
Dynamic Response | Max ±5% diviation for 10% – 50% load step wuth 1msec recovery |
MTBF | >150,000 hrs |
Selecting the right power supply for your application is not a small task. Let our technical sales engineers guide you through the process of choosing the right solution for your needs.
Below some parameters usually required to size and select the right power supply:
Contact our team of experienced engineers to discuss your unique power conversion and backup needs. We offer a wide range of highly reliable components that can be integrated and customized to create a solution that meets or exceeds your requirements.
For power automation systems please contact us at power.systems.automation@heliosps.com.au
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