300VA railway DC-AC inverters deliver 3-phase pure sine wave output voltage

New low-profile railway DC-AC inverter design

300VA, Rugged, Compact 3-Phase Railway Quality DC-AC Sine Wave Inverter

High frequency conversion ensures compact construction, low weight and high efficiency for the 3-phase sine wave inverters.

The CTP 300R-F7 series is the latest addition to our line of DC-AC inverters with 3-phase pure sine output voltage designed for railway applications. The 300VA units meet the stringent requirements of EN50155 for electronic equipment used on rolling stock.

The railway DC-AC inverters deliver a 3-phase output of 208Vrms line-to-line at 60 or 400Hz. A 115Vrms phase-to-neutral output can also be used. The units operate from wide EN50155 input ranges of 17-34Vdc (24Vdc nom.), 25-51V (36Vdc nom.), 33-67V (48Vdc nom.), 50-101V (72Vdc nom.), 67-135Vdc (96Vdc nom.) or 77-154V (110Vdc nom.). Custom I/O options are available on request. With new design topology and the use of microprocessor controlled high frequency PWM technology, the low profile units are more compact than previous 300VA versions and measure just 254 x 67 x 351 mm (W x H x L).

Equipped with heavy filtering on the input and output, the inverters comply with EN50121-3-2. They meet EN61000-4-2 (ESD), EN61000-4-3 (RF Immunity), EN61000-4-4 (Fast Transients), EN61000-4-6 (Conducted Immunity) and EN45545. Protection features include 1500Vdc input-output isolation, reverse polarity protection, overload protection, thermal protection and current limiting. A specially designed 3-phase controller module also contributes to the reliable operation of the unit.

Conformal coating provides protection against humidity and airborne contaminants. The inverters are cooled by conduction via baseplate with additional cooling by natural convection through the cooling slots and are rated for operation over a -25°C to +50°C temperature range without derating. We can also meet your requirements for wider temperature ranges.

An industrial version of this design, the CTP 300-F7, is also available.

ABSOPULSE Electronics is an original equipment manufacturer (OEM) specializing in the design and manufacture an extensive range of custom railway quality power conversion solutions. All of our designs are built in-house.

For further information, please contact us.

Key Specifications

  • 3-Phase sinusoidal output voltage;
  • DC-input: 24Vdc, 36Vdc, 48Vdc, 110Vdc with wide EN50155 ranges;
  • AC-output: 208Vrms (L-L)/3-phase continuous at 60 or 400Hz or
    or phase-to-neutral voltage of 115Vrms;
  • EMI: EN50121-3-2;
  • EN60950-1, EN50155, EN45545;
  • Cooled by conduction and natural convection;
  • Operating temperature range: -25°C to +50°C for full spec.;
  • Full electronic protection;
  • Typical efficiency at full load: min. 80%;
  • Rugged construction;
  • Conformal coated internal boards – protection from moisture, contaminants;
  • Dimensions: F7: 254 x 66 x 361 mm (10” x 2.6” x 14.2”)
    W x H x L.


Generic Data sheet – CTP 300R-F7 Three-phase railway sine wave inverter

Generic Data sheet – CTP 300-F7 Three-phase industrial sine wave inverter

Your requirements – Request a Quotation

Copyright © ABSOPULSE Electronics Ltd

Leave a Reply

Your email address will not be published. Required fields are marked *