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ABB REF542plus Product Introduction

Oct 04, 2025 ABB

ABB REF542PLUS is a compact digital bay control technology solution produced by ABB Group.The following is a detailed introduction to the product.

ABB REF542PLUS

Product positioning and functions

REF542PLUS integrates measurement,monitoring,protection,control and self-diagnosis functions.It is a multifunctional protection and switch control device designed for power systems.It can monitor the status of the power system in real time,respond quickly to abnormal conditions,and easily integrate into any substation automation system of ABB or a third party through integrated communication protocols.

Application areas

REF542PLUS is widely used in a variety of medium voltage applications,including but not limited to

Feeder protection:quickly cut off the fault area and improve the reliability of the feeder system.

Transformer protection:protect the transformer from various faults and ensure the safe operation of the transformer.

Motor protection:provides comprehensive motor protection functions to prevent motor damage due to overload,short circuit and other faults.

In addition,REF542PLUS is also suitable for industrial power systems,including manufacturing,chemical plants and other industrial facilities to protect equipment from power failures.

ABB REF542PLUS

Technical features

Advanced digital technology:adopts advanced digital processing technology to achieve high-precision measurement and protection functions.

Real-time monitoring and response:It can monitor the status of the power system in real time,respond quickly to abnormal situations,and ensure the stable operation of the system.

Multiple protection functions:It provides multiple protection functions,such as overcurrent protection,differential protection,ground fault protection,etc.,to meet various protection needs of the power system.

Flexible communication protocol:It supports multiple industrial communication protocols,such as Modbus,IEC 61850,etc.,and can be seamlessly integrated into the existing control system.

High-definition display:The control display panel adopts a high-definition display,which can clearly display various information,convenient for users to view and operate.

Self-diagnosis function:It is equipped with a self-diagnosis program,which can continuously check the status of hardware and software modules to improve the reliability and stability of the equipment.

User interaction and operation

Configuration function:Users can configure various parameters of the relay through the control display panel of REF542PLUS,such as input and output type,alarm settings,etc.

Monitoring function:Real-time display of the status and various parameters of the relay,such as input and output status,current and voltage,etc.

Operation function:Users can operate the relay through the panel,such as start and stop,alarm confirmation,etc.

John Smith

BG Automation

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