MLJ1005B010H00C | Motor Protection Relay

Parameter Name Parameter Value
Product Model ​MLJ1005B010H00C
Manufacturer GE Grid Solutions
Product Type Motor Protection Relay
Rated Voltage 110-480V AC/DC (Control Power)
Motor Voltage 3.3-15 kV (Sensing Range)
Protection Functions Thermal Overload, Current Unbalance, Locked Rotor, Short-Circuit, Ground Fault
Accuracy ±0.5% FS for Current, ±1% for Thermal Model
Contact Rating 8A @ 250V AC (Trip/Control Relays)
Communication 2× RS-485 (Modbus RTU), 1× Ethernet/IP
HMI Interface 8-Line LCD with Keypad
Operating Temperature -40°C to +70°C
Enclosure IP54, Corrosion-Resistant Alloy
Certifications UL 508, IEC 60255, CE, ATEX Zone 2
Mechanical Shock 30g (IEC 60255-21-1)
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Description

Product Overview

The ​GE MLJ1005B010H00C is a multi-functional motor management relay designed for comprehensive protection and control of medium-voltage motors in demanding industrial applications. As part of GE’s ML Series™ protection platform, this ​GE MLJ1005B010H00C integrates advanced diagnostics and conditional monitoring to prevent motor failures while optimizing operational efficiency. Utilizing microprocessor-based technology with non-volatile memory, it delivers precise thermal modeling, differential current protection, and vibration analysis for critical motors up to 15kV. The ​MLJ1005B010H00C features dual communication ports supporting both Modbus RTU and Ethernet/IP protocols for seamless integration into plant-wide DCS/SCADA systems. Its rugged IP54-rated enclosure with copper-free aluminum construction withstands corrosive environments like chemical plants and offshore platforms while meeting IEEE C37.90 transient immunity standards.

Technical Specifications

Parameter Name Parameter Value
Product Model ​MLJ1005B010H00C
Manufacturer GE Grid Solutions
Product Type Motor Protection Relay
Rated Voltage 110-480V AC/DC (Control Power)
Motor Voltage 3.3-15 kV (Sensing Range)
Protection Functions Thermal Overload, Current Unbalance, Locked Rotor, Short-Circuit, Ground Fault
Accuracy ±0.5% FS for Current, ±1% for Thermal Model
Contact Rating 8A @ 250V AC (Trip/Control Relays)
Communication 2× RS-485 (Modbus RTU), 1× Ethernet/IP
HMI Interface 8-Line LCD with Keypad
Operating Temperature -40°C to +70°C
Enclosure IP54, Corrosion-Resistant Alloy
Certifications UL 508, IEC 60255, CE, ATEX Zone 2
Mechanical Shock 30g (IEC 60255-21-1)

Key Features and Advantages:

Proactive Motor Health Management:
Real-time thermal capacity modeling tracks stator/rotor heating with 16-step memory. Embedded partial discharge detection identifies insulation degradation at early stages.

Critical Fault Prevention:
Instantaneous phase differential protection (87M) detects internal shorts within 1/4 cycle (<4ms). Vibration monitoring via optional accelerometer inputs (BNC connectors).

MIFIIPI55E10HI00

Simplified Integration:
Hot-swappable design with front-access CT connections reduces maintenance downtime. DIN rail or panel mounting flexibility accommodates retrofit applications.

Advanced Communications:
Dual-provisioned Ethernet supports PRP/HSR redundancy protocols. COMTRADE event recording captures 128 pre-fault and post-fault cycles for root-cause analysis.

Application Domains

The ​MLJ1005B010H00C protects critical motors in:

  • ​Mining: Conveyor drive motors with slip detection in dusty environments
  • ​Power Generation: Boiler feed pumps with start-time supervision
  • ​Oil & Gas: Centrifugal compressors requiring torsional vibration monitoring
  • ​Water Treatment: High-pressure injection pumps in corrosive seawater
  • ​Cement Manufacturing: Kiln drive motors with load-dependent stall protection
  • ​Chemical Processing: Agitator motors with insulation resistance tracking

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