ABB Main Transformer Terminal REF542plus Digital Relay


Adopts high-performance industrial-grade processor

Adopt high-performance industrial-grade wireless module

4G full network communication (Unicom, Telecom, Mobile)

Support low power consumption mode

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ABB Main Transformer Terminal REF542plus Digital Relay

Compact digital bay control technology solution: REF 542plus Feeder Terminal is a compact digital bay control technology solution. It can be used in several different medium voltage applications, such as in feeder protection, transformer protection and motor protection.

The feeder terminal REF 542plus, like its predecessor REF 542, combines measurement, monitoring, protection, control and self diagnostics in one package. With its integrated communication protocols, the REF 542plus can be easily incorporated into any substation automation system from ABB or third parties.

These new generation devices provide exceptional flexibility and scale-ability resulting in smart and clean solutions compared to more traditional approaches. The software solution allows you to use the REF 542plus in all ABB primary air and gas insulated switchgear solutions.

The terminal’s integrated condition monitoring system enables introduction of preventive maintenance to promote your long term asset management strategy.

Bay control and protection unit

Product benefits
A variety of functions precisely programmed for the requirements and the substation

Product features

  • Measurement
  • Monitoring
  • Control
  • Protection
  • Communication
  • Substation automation.

ABB REF542 Feeder Terminal offers all the essential functionality in single package. The protection functionality required for the given application can be provided in standardized configuration solution. When necessary the standardized terminals can be further turned to meet the specific requirement.