GE Multilin 369-H1-R-M-F-E-H-E – Motor Management Relay

Technical Specifications

• Power Supply:
  • Control Power: 50–300 VDC or 60–265 VAC (auto-ranging) with transient suppression for voltage spikes .
  • Power Consumption: ≤65 VA (max) at full load .
• Input/Output Interfaces:
  • Current Inputs: 1 A or 5 A secondary (CT inputs) for phase and ground fault monitoring .
  • RTD Inputs: Optional 12-channel 3-wire RTD inputs (100 Ω platinum, 100 Ω nickel, 120 Ω nickel, 10 Ω copper) for temperature measurement .
  • Digital Inputs: 6 optically isolated dry contact inputs (24 VDC compatible) .
  • Digital Outputs: 4 Form C relay outputs (5 A, 250 VAC/30 VDC) for tripping, alarms, or control signals .
• Communication:
  • Protocols: MODBUS RTU (RS-485), PROFIBUS-DP, and RS-232 for integration with SCADA/HMI systems .
  • Optional Fiber Optic Port: Baud rate 1200–19200 bps (Modbus RTU) for long-distance, noise-immune communication .
• Physical Attributes:
  • Dimensions: 29.6 cm (H) × 10.7 cm (W) × 20.5 cm (D) (11.65″ × 4.21″ × 8.07″) .
  • Weight: ~4.5 kg (~10 lb) .
  • Mounting: DIN rail or panel-mountable with secure locking clips .
• Environmental Ratings:
  • Temperature: -40°C to +70°C (-40°F to +158°F) with IP65 ingress protection (optional harsh environment variant) .
  • Humidity: 5–95% non-condensing (IEC 60068-2-30) .
  • Shock/Vibration: Compliant with IEC 60068-2-6 (5–500 Hz, 0.5 g) and IEC 60068-2-27 (100 m/s²) .
  • Certifications: CE, UL 61010-1, and ISA-S71.04 Class G3 (corrosive environments) .

Functional Features

1. Comprehensive Motor Protection:
   • Overcurrent/Overload: Configurable inverse-time curves (IEC thermal model) with 堵转 (locked rotor) detection .
   • Voltage Protection: Undervoltage, overvoltage, phase unbalance, and phase reversal protection .
   • Ground Fault Detection: Sensitive residual current monitoring (0.1–100% of rated current) .
   • Temperature Monitoring: RTD inputs for stator/winding temperature surveillance with alarm/trip thresholds .
2. Advanced Diagnostics:
   • Real-Time Health Monitoring: Continuous self-testing of CPU, memory, and communication links with LED status indicators .
   • Event Logging: Stores 512 events (timestamped with 1 ms resolution) for root-cause analysis .
   • Oscillography: Captures waveform snapshots during faults (voltage/current) for detailed troubleshooting .
3. Programmable Control Logic:
   • IEC 61131-3 Compliance: Supports ladder logic, function block diagram, and structured text for custom control strategies .
   • Sequence of Events (SOE): Prioritized alarm annunciations with configurable setpoints for process variables .
4. Flexible Configuration:
   • Metering Package (Optional): Measures voltage, frequency, power (kW/kVA), and energy consumption (MWh) .
   • Redundancy: Dual power supply inputs (24 VDC) for uninterrupted operation .
   • Hot-Swap Capability: Replaceable I/O modules without powering down the system .
5. User Interface:
   • Enhanced Display: 40-character LCD with backlight for parameter adjustment and trend visualization .
   • EnerVista Software: PC-based tool for remote configuration, firmware updates, and data logging .

Application Scenarios

1. Oil & Gas:
   • Pumping Stations: Protects centrifugal pumps and compressors from cavitation and overheating during pipeline operations .
   • Refineries: Monitors motor-driven agitators in chemical reactors to prevent process upsets .
2. Power Generation:
   • Steam Turbines: Controls auxiliary motors (e.g., lubrication pumps) in thermal power plants .
   • Wind Farms: Ensures grid-connected generators comply with voltage/frequency stability standards .
3. Water/Wastewater:
   • Pump Stations: Manages submersible pumps in sewage treatment plants, detecting dry-running conditions .
   • Desalination Plants: Protects high-voltage motors driving reverse osmosis (RO) membranes .
4. Industrial Manufacturing:
   • Mining: Safeguards conveyor belt motors and crushers from overload in mineral processing .
   • Pulp & Paper: Monitors variable-speed drives (VSDs) for paper machines, optimizing energy usage .

Typical System Integration

• Field Devices:
  • Current Transformers (CTs): 1 A or 5 A secondary for motor phase current monitoring .
  • Resistance Temperature Detectors (RTDs): Installed in motor windings for temperature feedback .
• Communication Network:
  • Fiber Optic Link: Connects to GE’s Mark VIe control system for real-time data exchange .
  • OPC UA Gateway: Enables integration with third-party SCADA platforms (e.g., Siemens WinCC) .
• Human-Machine Interface (HMI):
  • GE Cimplicity HMI: Displays motor status, trends, and alarm history via a graphical dashboard .
  • Mobile Access: Remote monitoring through a web-based interface (HTTPS/TLS encrypted) .

Safety & Compliance

• Cybersecurity: Role-based access control (RBAC) and encrypted OPC UA communication prevent unauthorized configuration changes .
• Fail-Safe Design:
  • Hardwired Trip Circuits: Directly triggers emergency shutdowns (ESD) via discrete outputs .
  • Diagnostic Coverage: >99% self-test coverage for critical components (e.g., CPU, memory) .
• Environmental Sustainability: RoHS-compliant lead-free design reduces ecological impact .