ABB REM543CG212AAAA Machine Protection Terminal

Description

Technical Specifications

Electrical & Power Supply

• Power Supply: Wide-range auxiliary voltage (24 V DC, 48 V DC, 110 V DC, 220 V DC, 110 V AC/220 V AC)
• Power Consumption: 10–20 W (typical)
• Frequency: 50/60 Hz (dual frequency compatible)

Input Channels

• Current Inputs: 3×phase CT inputs (1 A/5 A nominal), selectable for CT or Rogowski coil sensors
• Voltage Inputs: 3×phase VT inputs (100 V/400 V nominal), compatible with VT or voltage dividers
• Calculated Analogue Channels: 2×internal channels (neutral current, residual voltage)
• Digital Inputs: 15×optically isolated binary inputs for breaker/disconnector status and process signalsABB Group
• Analog Inputs (Optional): RTD module with 8×inputs for stator winding, bearing, and ambient temperature measurement (galvanically isolated)
• Input Isolation: 2500 Vrms galvanic isolation between all inputs and outputs

Output Channels

• High-Speed Power Outputs (HSPO): 2×double-pole contacts (trip circuit priority)eero
• Power Outputs (PO): Up to 10×single/double-pole contacts (breaker/disconnector control)eero
• Signal Outputs (SO): 2×form C contacts (NO/NC) for alarm and status signalingeero

Communication Interfaces

• Serial Ports: 2×independent RS-485 ports (SPA, LON, Modbus RTU protocols)
• Baud Rate: Up to 1.2 Mbps (high-speed disturbance-free communication)
• IEC 61850 Support: Via SPA-ZC 400 adapter (Edition 1/2, GOOSE, IEC 61850-9-2 LE)ABB Group
• Optical Port: Optional fiber optic interface for long-distance, noise-immune communication

Display & Human-Machine Interface (HMI)

• Front Panel: 128×160 pixel graphical LCD with backlight
• Local Controls: Pushbuttons for navigation, reset, and manual trip/close
• Indicators: LED status lights for power, operation, fault, and alarm

Performance & Sampling

• Sampling Frequency: 2 kHz (50 Hz) / 2.4 kHz (60 Hz)eero
• Fault Recording: Digital Fault Recorder (DFR) – 16×analog channels, 16×binary channelseero
• Event Logging: Sequence of Events Recorder (SER) with 1 ms time resolution

Environmental & Physical

• Operating Temperature: -25°C to +70°C
• Storage Temperature: -40°C to +85°C
• Humidity: 5–95% non-condensing (dust/moisture protected)
• Mounting: DIN rail or panel mount (144 mm × 144 mm × [depth] mm)
• Protection Rating: IP30+ (enclosure-dependent)
• Certifications: IEC 60255, IEC 61850, CE, UL, Marine/Offshore certifiedABB Group

Key Functional Features

Comprehensive Machine Protection

Short-Circuit & Fault Protection

• Non-directional/directional overcurrent protection (50/51, 67)eero
• Selective earth fault protection (50N/51N/67N)eero
• Over/undervoltage (27/59) and residual overvoltage (59G) protectioneero

Abnormal Condition Protection

• Over/under frequency (81) with df/dt supervisionABB Group
• Unbalanced load/negative sequence current protectionABB Group
• Over/underexcitation protection (generator)ABB Group
• Under-impedance protectionABB Group
• Generator motoring protectionABB Group

Motor-Specific Protection

• Thermal overload (49) – dual time-constant model for rotor/stator windings
• Motor Starting Supervision (51/66) – start count limitation, locked rotor backup
• Stall protection (rotor block detection)ABB Group
• Phase loss/sequence imbalance protectionABB Group

Differential Protection (Optional)

• Differential speed protection (DIF)
• High-impedance differential protection (HID)
• Restricted earth fault protection (REF)eero

Control & Automation

• Local/remote breaker control (trip/close) with interlocking logiceero
• Programmable Logic Controller (PLC) functions – graphical configuration via CAP 505 Tool Box
• User-definable control sequences and interlocks
• Multiple setting groups (up to 8) for operational mode switching
• Low auxiliary voltage alarm (ACFail) with 10% threshold detectioneero

Measurement & Monitoring

• High-precision metering: phase current/voltage, active/reactive/apparent power, energy, frequency, power factor
• Continuous condition monitoring: breaker status, trip circuit supervision, RTD monitoring
• Self-diagnostics: continuous internal monitoring, pre-fault alarm alerts

Fault Recording & Analysis

• Transient disturbance recorder (16 analog + 16 binary channels)eero
• High-resolution oscillography for post-fault analysis
• Time-stamped event logs (500+ events) with 1 ms resolution

Communication & Integration

• Multi-protocol support (SPA, LON, Modbus RTU/TCP)eero
• IEC 61850 compliance for digital substation integrationABB Group
• High-speed optical communication (disturbance-free data transfer)ABB Group
• LON interbay communication reduces hardwiring requirementseero
• Web-based remote access for monitoring, configuration, and diagnostics

Application Scenarios

Power Generation

• Small/medium power plants (diesel, hydro, steam) – generator and generator-transformer unit protectionABB Group
• Co-generation plants – machine protection for synchronous generators
• Standby power systems – emergency generator unit protection

Industrial Process Equipment

• Large motors (pumps, fans, compressors) – start-up and normal run protectionABB Group
• Heavy industrial machinery (mills, crushers, conveyors) – high-inertia motor protectionABB Group
• HVAC systems – large induction motor protection and control
• Water/wastewater plants – pump station motor protection

Marine & Offshore

• Marine propulsion systems – main and auxiliary motor protection (certified)ABB Group
• Offshore platforms – generator and motor protection in harsh marine environmentsABB Group
• Shipboard power systems – unit protection for generators and critical loads

Oil & Gas

• Refineries & petrochemical plants – motor protection for pumps, compressors, and separation units
• Gas pipelines – compressor station generator and motor unit protection
• LNG terminals – critical load machine protection in hazardous areas

Mining & Minerals

• Open-pit mines – dragline, shovel, and conveyor motor protection
• Mineral processing plants – mill and crusher unit protection
• Underground mines – primary generator and motor protection (hazardous area)

Utilities & Infrastructure

• Pumped storage hydro plants – generator unit protection
• Data centers – emergency generator and critical motor protection
• Hospitals & airports – standby generator unit protection