Model: REF542PLUS 76E1BBBB361WB31
Brand: ABB
Series: REF542plus
Core Function: Multifunction Bay Control, Protection, Measurement and Monitoring Unit for Medium‑Voltage SwitchgearABB Group
Product Type: Feeder Protection Relay / Bay Control TerminalABB Group
Key Specifications: Supports multiple ANSI protection functions, multi‑protocol communication, graphical HMI, self‑diagnosis, modular hardware designeero
Product Overview
The ABB REF542PLUS 76E1BBBB361WB31 is a compact all‑in‑one bay control and protection terminal engineered for medium‑voltage power distribution systems. It consolidates protection, control, metering, monitoring, fault recording and self‑diagnosis within single hardware unit, widely deployed for feeder, transformer and motor protection applications in substations and industrial power plantsABB Group. Its split‑mount HMI architecture separates rear main unit and front operating panel, optimizing cabinet layout for both air‑insulated and gas‑insulated switchgear installations. Though original manufacturing has ended, this unit remains a reliable spare‑part solution for legacy MV switch‑yard retrofits and maintenance projects worldwideABB Group.
Product Features
- Integrated multi‑purpose design: protection, control, measurement, event logging and fault recording in one deviceABB Group
- Detachable graphical local HMI with multi‑language LCD display for onsite parameter setting and status revieweero
- Comprehensive hardware self‑diagnosis, watchdog supervision and trip‑circuit monitoring to detect internal faults automaticallyeero
- Broad set of configurable ANSI protection functions for feeder, transformer and motor scenarioseero
- Multiple standard communication interfaces: IEC 61850, Profibus‑DP, Modbus RTU/TCP, SPA, DNP3.0, IEC‑60870‑5‑103
- Fault recorder captures cycle‑based disturbance data for post‑fault root‑cause analysis
- High‑grade EMC compliance for harsh electromagnetic environments inside switchgear rooms
- Split‑body mechanical design adapts to compact GIS and standard metal‑clad switchgear cabinets
- Supports remote configuration and monitoring via engineering tool software
Function
- Protection: Execute configurable over‑current, earth‑fault, directional, thermal, motor‑specific and voltage‑frequency protection to isolate electrical faults rapidlyeero.
- Control: Local / remote switching control for circuit breakers and switchgear primary apparatus with built‑in interlock logic.
- Measurement: Real‑time acquisition of current, voltage, power, power‑factor and energy metering valuesManualsLib.
- Monitoring & Self‑Diagnosis: Continuously supervise hardware health, trip coil circuits, switchgear operating mechanism and record operation counters, alarms and event logseero.
- Fault Recording: Store disturbance waveform data for post‑incident analysis of power‑system failures.
- Communication: Exchange protection settings, measured data, alarms and control commands with SCADA and substation automation platforms via multiple industrial protocols.
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