ABB MPRC086444-005 – Motor Protection and Control Relay
The ABB MPRC086444-005 is an advanced motor protection relay designed for industrial applications to safeguard motors from electrical faults, optimize performance, and enable seamless integration into automation systems. It combines robust protection features with intelligent control capabilities, ensuring reliable operation of motors in demanding environments such as manufacturing, mining, and energy production.
Technical Parameters
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Category
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Specification
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Rated Voltage
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100–690 V AC (phase-to-phase)
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Rated Current
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Adjustable range: 1–630 A (depends on CT ratio)
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Frequency
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45–65 Hz
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Protection Functions
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Overload, short-circuit, phase loss, imbalance, earth fault, locked rotor, under/overvoltage, motor temperature (via PTC/RTD)
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Control Outputs
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4 relay outputs (NO/NC, 250 V AC/5 A)
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Digital Inputs
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4 configurable inputs (24–240 V AC/DC)
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Communication
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Modbus RTU (RS-485), optional Profibus DP or Ethernet/IP
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Accuracy
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±1% of measured current
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Display & Interface
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Backlit LCD with navigation keys, local/remote control switching
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Operating Temperature
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-25°C to +60°C
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Enclosure Protection
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IP40 (standard), optional IP54/65
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Certifications
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IEC 60947, UL 508, CE, RoHS
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Functional Features
- Comprehensive Motor Protection
- Thermal Overload Protection: Mimics motor thermal characteristics to prevent overheating.
- Advanced Fault Detection: Instantaneous trip for short-circuits (50/51), phase imbalance (46), and ground faults (50G/51G).
- Startup Supervision: Monitors motor starting time and blocks operation if locked rotor (14) or excessive starts (66) occur.
- Real-Time Monitoring & Diagnostics
- Measures motor parameters: current, voltage, power, energy consumption, and power factor.
- Integrated PTC/RTD input for direct motor winding or bearing temperature monitoring.
- Flexible Control Logic
- Programmable logic functions (PLC-like) for custom control sequences (e.g., auto-restart, timer-based operations).
- Local/remote control switching via digital inputs or communication interfaces.
- Communication & Integration
- Modbus RTU for seamless integration with SCADA, DCS, or PLC systems.
- Optional Ethernet/IP or Profibus DP modules for Industry 4.0-ready connectivity.
- User-Friendly Interface
- Intuitive LCD menu for configuration, real-time data display, and event logs.
- Pre-configured settings for common motor types (pumps, fans, compressors).
- Energy Efficiency Optimization
- Load profiling and duty cycle analysis to reduce energy waste.
- Motor start/stop scheduling to align with process demands.
- Cybersecurity & Safety
- Password-protected access and role-based user permissions.
- Compliance with IEC 62443 for secure industrial communication.
Typical Applications
- Industrial Motors: Pumps, fans, conveyors, crushers, compressors.
- HVAC Systems: Air handling units, chillers, cooling towers.
- Mining & Minerals: Hoists, grinders, conveyor belts.
- Water/Wastewater: Treatment plant motors, aeration blowers.
Compliance & Standards
- Safety: IEC 60947-1, UL 508, SIL 2 (optional).
- EMC: IEC 61000-6-2 (immunity), IEC 61000-6-4 (emissions).
- Environmental: RoHS, REACH.
Conclusion
The ABB MPRC086444-005 is a versatile and robust motor protection relay engineered to enhance motor reliability, reduce downtime, and optimize energy use in industrial settings. Its integration of adaptive protection algorithms, real-time diagnostics, and industrial communication protocols makes it a critical component for modern automation systems. Designed for ease of use and compliance with global standards, it ensures safe and efficient motor operation across diverse applications, aligning with ABB’s commitment to innovation and sustainability.
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