HVI300R – DC/DC Converter Railway Applications

The HVI 300R Series rugged, single output DC/DC converter uses field-proven double-conversion topology to generate 300W output power.
It is a mature design with a proven track record in many applications. The unit is equipped with non-destructive reverse polarity protection on the input, surge protection and high-grade input/output filtering. The series is rated for operation over a -25 to +55§C temperature range without derating. It is cooled by natural convection. This model is ruggedized and conformal coated for immunity to shock, vibration, humidity, moisture, dust and insects. An optional redundancy diode allows parallel connection to achieve higher output power or N+1 redundancy. This chassis-mount design is optimized for low component count and high efficiency. The use of components with established reliability results in a high demonstrated MTBF.

Rugged Mechanical Designs

Helios power supplies are ruggedly constructed and can be customized for specific mechanical requirements. Standard mechanical packages and ruggedization options include:

  • Chassis and wall-mountable units in vented conduction/convection or fan-cooled enclosures;
  • DIN-rail and open-frame format available for many designs;
  • Plug-in (Eurocard) format for modular power systems in 19 inch or 23-inch racks;
  • Conformal coating and ruggedizing are standard;
  • Full encapsulation (potting) in a thermally conductive MIL-grade silicon rubber compound with UL94V-0 flammability rating for immunity to high levels of shock and vibration, humidity, moisture, dust, salt, oil, insects and other contaminants;
  • Enclosure in rugged, IP66- or IP67-rated waterproof, dustproof and explosion-proof die cast aluminum packages. These enclosures also protect internal electronic boards from condensation and the ingress of oil, salt, sand, insects and other environmental contaminants.
  • Custom connections
CSI SERIES DC-AC Inverters
Power

SERIES TABLE

Model Input ( A) Output ( V) Output ( A) Power (W)
HVI300R-24FT 750VDC 24V 12A 300W

SPECIFICATIONS TABLE

Operating input voltage range 750VDC ( 525 ~ 975 )
• Other voltages on request
Input Protection Reverse polarity protection.Inrush current limiting Lower voltage than specified will not damage unit
Output Voltage See  table
Regulation Line: ±1%
Load: ±2%
Operating Temp:  -25°C to +55°C at full load.
70°C cold plate temperature
Efficiency Model dependent , typically 80%
Dynamic Response Max ±5% diviation for 10% – 50% load step wuth 1msec recovery
MTBF >130,000 hrs

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