DC/DC and AC/DC modules make rugged supplies

Robust design uses industrial grade components and provides a high-density space-saving system for applications in industries such as railway controls and communications

New from Schaefer is the C/B 2700 Series of 3U DC/DC and AC/DC convertor modules and battery chargers. The C/B 2700's robust design uses industrial grade components and provides a high-density space-saving system 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 380V DC, with six input range choices.

AC input options are single-phase 115 or 230V AC, as well as a three-phase input of 3 x 200V AC.

Battery charging models are also available.

Units feature single outputs in nine standard ranges from 8 to 290V DC.

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 convertors perform from - 20 to +75C (derated above +55C), with an option for -40C 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 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 'ruggedisation' and extended environmental operating conditions for higher temperatures and humidity is also available.

Mechanical and electrical modifications to standard modules are readily available on request.