Description

ABB REM543CM214AAAA Product Description

Technical Specifications

• Product Model: REM543CM214AAAA
• Brand: ABB (Relion® 500 Series)
• Warranty: One Year
• Input Voltage: 110–240 VAC/DC universal auxiliary control power
• Operating Temperature: -20°C to +60°C
• Storage Temperature: -40°C to +85°C
• Response Time: ≤20ms selective fault tripping execution speed
• Protection Class: IP54 front panel, IP20 rear wiring terminal compartment
• Accuracy Class: 0.2% full-scale measurement accuracy for current and voltage sampling
• Output Frequency: 50Hz / 60Hz system frequency adaptive detection
• Rated Current Range: CT secondary input 1A or 5A standard transformer rating
• Communication Interface: RS485 serial port, optical fiber communication interface, local service front port
• Supported Protocols: Modbus RTU, SPA bus, IEC 61850 (via SPA-ZC 400 adapter), LON bus
• Overload Capacity: 150% continuous withstand for 10 seconds on CT measurement inputs
• Dimensions: 144mm (W) × 180mm (H) × 162mm (D), standard 4U panel mounting form factor
• 

Product Overview

The REM543CM214AAAA is a factory-configured multifunctional numerical machine protection intelligent electronic device (IED) belonging to ABB Relion 500 platform, designed as the integrated protection, control and monitoring core for medium-voltage asynchronous/synchronous motors and small-to-medium generator-transformer units. This fully digital relay consolidates dozens of discrete electromechanical protection relays, measuring transducers and sequence logic controllers into one single panel-mounted unit, delivering full lifecycle supervision for critical rotating equipment including large water pumps, induced draft fans, mineral crushing mills and power station auxiliary generators.

It addresses multiple prominent vulnerabilities in traditional motor and generator protection schemes, including scattered discrete relay components causing complicated wiring and high failure rates, lack of locked rotor stall and startup cumulative counter protection for heavy-load motors, insufficient fault waveform recording for post-failure root cause analysis, limited data upload capacity to substation SCADA systems, and absence of programmable interlock logic for breaker control and equipment sequential startup. Built-in thermal overload modeling, phase unbalance detection, earth fault directional protection and under/over-excitation protection cover nearly all abnormal operating conditions of rotating machinery, while disturbance recorder function captures transient electrical waveforms during short circuits or equipment trips.