Absopulse - Railway DC/DC Converters, AC/DC Power Supplies and Battery Chargers, DC/AC Sinewave Inverters, AC/AC Phase and Frequency Converters, and Complete DC/DC and AC/DC Power Systems

Since 1982, Absopulse Electronics has specialized in the design, development and manufacture of heavy-duty switching power supplies for railway environments. Today, the company's rugged power conversion products operate in on-board and trackside electronic systems in major railway projects around the world. These include light rail, trams, overhead trains, underground and other mass transit systems, as well as mining locomotives.

Absopulse's rugged power conversion solutions are also extensively used in heavy-duty industrial, airborne, shipboard, military, utility and telecom applications in many countries.

Custom and standard railway power conversion systems

Absopulse delivers cost-effective solutions to almost any electrical and mechanical configuration requirement, with output power ranging from a few watts to several kilowatts. Absopulse can often meet customer specifications by making a few modifications to existing designs. For other requirements, it provides semi or fully-customized solutions with short delivery times and low or no NRE, even for complex specifications and low production quantities. Absopulse's power supplies are designed for an operational life of up to 30 years in severe environments.

The company's engineering design team and production staff work side-by-side in the same location; this facilitates and enhances the product development process. An ongoing R&D program ensures that it remains innovative and competitive.

Rugged railway power conversion products

Absopulse product lines designed for on-board and trackside railway and other harsh-environment applications include:

• DC/DC converters
• AC/DC power supplies and battery chargers
• DC/AC sine-wave inverters, single or 3-phase combinations
• AC/AC phase and frequency converters with sine wave output voltage, single or 3-phase combinations
• DC-input dimmable backlight inverters for LCD displays
• DC-output UPS systems
• Complete power systems in 19in and 23in racks: AC/DC, DC/DC
• Gate-drive power supplies for traction systems - up to 30kVA isolation, very low corona limits

These products typically offer combinations of the following parameters and features, depending on specific model:

• DC inputs: 24V, 36V, 48V, 72V, 96V, 110V or 750V with wide input ranges (EN50155) or custom
• DC outputs: 3.3V, 5V, 12V, 15V, 24V, 36V, 48V, 110V, 125V, 250V or custom
• AC inputs: universal inputs, PFC inputs, 115/230V, 230V or custom
• AC outputs: 115V, 230V, 380V, 400V (50Hz, 60Hz or 400Hz) or custom
• Single or multiple outputs
• EMI filtering to any standard, typically EN55022 Class B
• High efficiency, full electronic protection and generous design headroom contribute to low product lifecycle costs
• Wide operating temperature ranges, including -40°C to +70°C - wider ranges are custom
• Full encapsulation (potting) in MIL-grade silicon rubber compound, or conformal coating
• Rugged mechanical packages to meet almost any customer requirement
• Wide range of options including output fail alarms, redundancy, indicators
• RoHS compliance

Railway standard compliance

Absopulse's railway power supplies are designed to meet rail-specific standards, including EN50155, EN61000, EN55022 Class B and EN50121-3-2 conducted and radiated (EMI and EMC), RIA 12, IEC571, as well as IEC61373 shock/vibration and RIA 13 and RIA 20 mechanical standards. Please contact the company regarding any standards not listed here.