GE 269PLUS-D/O-261-100P-120

The GE 269PLUS-D/O-261-100P-120 is a motor management relay from GE Multilin’s 269 Plus series. It’s designed to provide comprehensive protection and control for medium-sized three-phase AC motors. Here’s a summary of its key technical parameters:

⚙️ 1. Basic Specifications

• Model: 269PLUS-D/O-261-100P-120
• Brand: GE (General Electric)
• Manufacturer: GE Multilin
• Rated Voltage: 120V AC
• Input Voltage: 125V DC (for the control circuit)
• RTD (Resistance Temperature Detector): 100 Ohm platinum RTD for accurate temperature monitoring
• Weight: Approximately 7.75 lbs (3.52 kg)
• Shipping Dimensions: 11.40″ x 7.50″ x 16.00″ (W x H x D)

🛡️ 2. Protection Functions

The relay offers extensive motor protection features:

• Thermal Overload Protection: Includes 8 standard overload curves and a user-definable FlexCurve™ for customized protection
• Short Circuit Protection: Guards against high-current faults
• Ground Fault Protection: Detects ground leakage currents
• Unbalance/Single Phasing: Protects against phase unbalance and loss of a phase
• Locked Rotor: Detects and protects against motor stalling
• Undercurrent (Loss of Load): Monitors for a drop in motor current indicative of load loss
• Phase Reversal: Detects incorrect phase sequence
• RTD-Based Temperature Monitoring: Provides protection for stator windings and bearings against overheating using up to 12 programmable RTD inputs
• Jam/Quick Trip: Protects against mechanical jamming
• Start Inhibition: Manages multiple motor starts
• Under/Over Voltage: Available with the metering option

📊 3. Control and Monitoring Features

• Thermal Model Bias: Enhanced model includes current unbalance and RTD bias for accurate thermal protection
• Pre-Trip Alarm: Provides early warning before a trip occurs
• Emergency Restart: Allows for emergency override under certain conditions
• Lockable Trip Relay: Main trip relay with latching function
• Variable Lockout Time: Adjustable lockout time after a trip

🔌 4. Inputs and Outputs

• Digital Inputs: 5 factory-programmed digital inputs
• Output Relays: 4 output relay contacts (including main trip, alarm, and two auxiliary relays)
• Analog Output: 1 programmable analog output (e.g., for motor thermal capacity, current, or RTD temperature)
• RTD Inputs: 12 programmable RTD inputs for temperature sensing

📶 5. Communication and Metering

• Communication Protocol: Supports Modbus RTU via a standard RS-485 serial port for integration into control systems
• Metering Functions: Provides monitoring of:
  • Average and individual phase currents
  • Motor load (% of full load)
  • RTD temperatures (hottest, individual, max)
  • Unbalance ratio (% In/Ip)
  • Ground leakage current
  • Thermal capacity used and time to trip
  • Optional voltage, power, power factor, frequency, and energy metering (with metering option)
• Data Logging: Includes a data logger for recording trends and events
• Learning and Statistics: Captures motor running and learning data, including last trip information for diagnostics

🖥️ 6. Programming and Interface

• Display: Simple LED display for real-time information
• Keypad: 12-key keyboard for programming and configuration
• Software: Configured using GE’s EnerVista software for setup, monitoring, and integration into existing control systems
• Field Upgradable: Settings and firmware can be upgraded in the field

🌡️ 7. Environmental Conditions

• Operating Temperature: -25°C to +60°C
• Storage Temperature: -25°C to +60°C
• Relative Humidity: Up to 95% non-condensing

🏭 8. Physical and Installation

• Enclosure: Designed for industrial environments.
• Installation: Must comply with all national and local electrical codes

🚀 9. Applications

This relay is suitable for various industrial applications involving medium-voltage motors, including:

• Pumps, fans, compressors
• Conveyors
• Renewable energy systems (e.g., wind, solar)
• Transportation systems (e.g., electric vehicles, rail)
• Industrial machinery in manufacturing, energy, and infrastructure sectors