Schaefer Releases 600W Power Converter With Multiple Voltage Range Choices

Schaefer, Inc. introduced the C/B 2700 series of 3U dc-dc and ac-dc converter modules and battery chargers. The C/B 2700’s robust design uses industrial grade components and is said to provide a high density, space-saving solution for applications in industries such as railway controls and communications equipment (onboard and trackside), military applications, oil/gas processing, fuel cell applications, transportation, telecommunication systems, process control systems, and power stations.

The C/B 2700 Series topology delivers up to 600W at any dc input from 18 to 380Vdc, with six input range choices. AC input options are single-phase 115 or 230Vac, as well as a three-phase input of 3 x 200Vac. Battery charging models are also available. Units feature single outputs in nine standard ranges from 8-290Vdc. All outputs are adjustable and tightly regulated to 0.2% or better (load) and 0.1% (line). Custom input and output ranges are readily available, typically not impacting delivery and at no additional cost.

Convection cooled, these converters perform from –20 to +75°C (derate above +55°C), with an option for –40°C operation. All models feature full electronic protection and up to 92% efficiency. EMI performance is to EN55022 Class A standards (Class B optional).

Units are packaged in a rugged 3U x 28TE x 226mm (HxWxD) module with an optional wall mount configuration. Other options include input inrush current limiting, dc input reverse polarity protection, output parallel/redundant operation, remote on/off, Power Fail/DC-OK alarms, system reset, and programming/monitoring functions.

Further mechanical "ruggedization" and extended environmental operating conditions for higher temperatures and humidity is also available.