Product Short Description
Product Introduction
This relay is a premium motor management solution engineered to protect, monitor, and control industrial motors with advanced functionality and robust operational capabilities, tailored for systems with low-voltage control power supplies. It integrates 5A phase CT secondary compatibility for accurate current measurement, a low-power wide-range control supply (20-48 VAC / 20-60 VDC) for stable operation in low-voltage industrial power systems, 4 analog outputs for seamless integration with SCADA/DCS systems, and an enhanced front panel with a 40-character backlit LCD for intuitive local configuration and real-time status monitoring. The relay uses advanced microprocessor technology to deliver full-spectrum protection against electrical and thermal faults, alongside enhanced diagnostics for in-depth motor health assessment. It supports integration with MCCs and supervisory control systems, maximizing motor uptime, reducing maintenance costs, and ensuring safe, efficient operation in harsh industrial environments. It combines precise fault detection, real-time performance monitoring, and actionable data logging to optimize motor operation and extend service life.
Description
Technical Specifications
| Specification | Details |
|---|---|
| Series | GE Multilin 469 Motor Management Relay |
| Product Type | 5A Phase CT Low-Power Motor Management Relay with 4 Analog Outputs, Enhanced Front Panel |
| Control Power Supply | LO: 20-60 VDC / 20-48 VAC (48-62 Hz), 25 VA typical power, 45 VA maximum power |
| Phase Current Inputs | P5: 5 A nominal (CT-connected); frequency range 20-100 Hz; True RMS conversion, 1.04 ms/sample |
| Ground Current Input | 5 A nominal (dedicated ground CT input); frequency range 20-100 Hz |
| Voltage Input | Up to 600 V AC (line voltage monitoring for phase-related protection) |
| Analog Outputs | A20: 4 analog outputs (4-20 mA), configurable for current, voltage, power, or temperature signals |
| Front Panel & Diagnostics | E: Enhanced front panel with 40-character backlit LCD, front-panel programming, enhanced diagnostics, extended event recorder, security audit trail |
| RTD Inputs | Supports RTD types: 100Ω platinum, 100Ω nickel, 120Ω nickel, 10Ω copper for motor winding/bearing temperature monitoring |
| Digital Inputs | 8 opto-isolated digital inputs for external control/interlock signals (24 V DC, 6 mA sinking current) |
| Output Relays | 6 Form-C contacts, rated 5 A at 250 V AC and 0.5 A at 30 V DC |
| Communication Interfaces | 1 non-isolated RS-232 port, 2 isolated RS-485 (Modbus RTU) ports for local configuration and EnerVista software connection |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Enclosure Protection | Front panel IP30; NEMA 1/IP20 when mounted in MCC |
| Dimensions (H x W x D) | 296 mm x 107 mm x 205 mm |
| Weight | 4.5 kg (approximate) |
| Accuracy | Overload trip: ±1% of displayed value; current measurement: ±0.2% of full scale; voltage measurement: ±0.5% of full scale |
| Event Recorder | Stores up to 200 fault events with time stamps; security audit trail for operational accountability |
| Waveform Capture | Oscillography with 128 samples per cycle for voltage/current post-fault analysis |
| Analog Output Accuracy | ±1% of full scale; configurable for 0-20 mA or 4-20 mA signals |
| Power Consumption | 25 VA typical, 45 VA maximum |
| Trip Holdup Time | 30 ms non-failsafe; 20 ms failsafe |
| Certifications | UL, CSA, CE compliant; meets IEC 61850 standards |
Function Characteristics
- 5A Phase CT Compatibility: P5 5A phase CT secondary inputs ensure accurate current measurement and protection for motors with 5A CT installations, eliminating the need for CT ratio adapters.
- Low-Power Control Supply: 20-60 VDC / 20-48 VAC wide-range input ensures stable operation in low-voltage industrial power systems, with reliable trip holdup for fault response.
- 4 Configurable Analog Outputs: A20 4-20 mA outputs transmit real-time motor parameters (current, voltage, power, temperature) to SCADA/DCS for centralized monitoring and control.
- Enhanced Front Panel: 40-character backlit LCD and front-panel keypad enable quick configuration, real-time status checks, and on-site fault diagnostics, reducing setup and troubleshooting time.
- Comprehensive Protection Suite: Delivers thermal overload, short circuit, ground fault, locked rotor, phase loss/unbalance, undervoltage, overvoltage, underfrequency, and breaker failure protection to cover all critical motor fault scenarios.
- Advanced Diagnostics: Enhanced motor diagnostics, extended event logging, security audit trail, and oscillography enable root-cause analysis, minimizing downtime and optimizing maintenance schedules.
- Flexible I/O Configuration: 8 digital inputs and 6 Form-C outputs are customizable for control, alarm, and interlock functions, supporting integration with external safety systems.
- Waveform Capture: 128-samples-per-cycle oscillography captures voltage/current waveforms for detailed post-fault analysis and system optimization.
- Seamless System Integration: Isolated RS-485 (Modbus RTU) and RS-232 ports support connection to SCADA, DCS, and other industrial control systems for centralized monitoring and remote management.
- RTD Temperature Monitoring: Supports multiple RTD types for direct temperature measurement of motor windings and bearings, enabling early detection of thermal issues.
Application Scenarios
- Industrial Motor Control Centers (MCCs): Protects and manages motors driving pumps, fans, compressors, conveyors, and mixers in manufacturing plants, ensuring continuous production and reducing downtime—ideal for low-voltage control systems.
- Renewable Energy Installations: Safeguards auxiliary motors in solar inverters, wind turbine nacelles, and energy storage systems, with low-power compatibility matching renewable energy control system requirements.
- Mobile & Off-Grid Equipment: Manages motors in mobile industrial machinery, remote oil/gas wellhead pumps, and off-grid power systems, where low-voltage control power is standard, with 4 analog outputs for remote monitoring.
- Data Centers & Critical Facilities: Protects HVAC and cooling system motors, with low-power operation and enhanced diagnostics ensuring reliable operation in mission-critical environments.
- Water and Wastewater Treatment Plants: Shields motors in aerators, sludge pumps, and filtration systems, with robust protection against overloads and phase-related faults in humid/corrosive environments, and 4 analog outputs for process control integration.
- Food and Beverage Industry: Manages motors in processing lines, packaging equipment, and refrigeration systems, with low-power compatibility for clean energy systems and SR469-CASE facilitating easy integration into existing control cabinets.
- Pharmaceutical Manufacturing: Ensures motor reliability in mixing, blending, and material-handling systems, with enhanced diagnostics supporting predictive maintenance to maintain production continuity—resists dust and temperature fluctuations in cleanrooms.
Additional Information
- Configuration Software: Compatible with GE Multilin EnerVista 469 software for remote configuration, real-time monitoring, and data logging, including analog output parameter setup.
- User Manual: Official user manual (GEK-106613C) provides detailed installation, configuration, and troubleshooting guidelines, including 5A CT integration steps.
- Warranty: 12-month standard warranty, with extended warranty options available for critical applications in harsh environments.
- Replacement Compatibility: Directly replaces older 469 series relays, with backward-compatible wiring and programming for seamless upgrades.
- Maintenance Requirements: Minimal maintenance; annual calibration of current inputs and software updates recommended; analog output calibration every 2 years for accuracy.
- Environmental Compliance: Meets pollution degree II, overvoltage category II requirements for safe operation in industrial settings.
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