Product Short Description
Product Introduction
This Feeder Management Relay is a core component of GE Multilin’s 760 Series, designed to safeguard and manage medium – voltage and low – voltage distribution feeders in power utilities, industrial facilities, and commercial buildings. It combines multiple protective functions, real – time monitoring, and control capabilities in a single device, eliminating the need for multiple discrete protection components. The relay features a 5.7 – inch color LCD display for intuitive operation and data visualization, dual Ethernet ports for seamless network integration, and eight 4-20 mA analog outputs for connecting to SCADA systems and process control equipment. It uses a 32 – bit Motorola 68332 microprocessor and a 16 – bit Intel 80C186 microprocessor to deliver fast and accurate signal processing, with a wide power supply range for flexible installation in diverse electrical environments. The relay supports comprehensive fault analysis through waveform capture and data logging, enabling quick identification and resolution of power system issues, and it complies with global industry standards for protection and control devices, ensuring compatibility and reliability across different applications.
Description
Technical Specifications
| Specification | Details |
|---|---|
| Product Series | GE Multilin 760 Series Feeder Management Relay |
| Product Type | Microprocessor – based Feeder Protection and Management Relay |
| Microprocessor Configuration | 32 – bit Motorola 68332 (main) and 16 – bit Intel 80C186 (auxiliary) |
| Current Inputs | 3 phase current inputs (5 A nominal); 1 zero sequence current input (5 A nominal); 1 sensitive ground current input (5 A nominal) |
| Voltage Inputs | 3 phase voltage inputs (120 V/240 V nominal); 1 neutral voltage input (120 V nominal) |
| Analog Outputs | 8 independent 4-20 mA channels, SIL2 compliant |
| Digital Inputs | 8 dry contact inputs for status monitoring (24 V DC nominal) |
| Digital Outputs | 6 Form C relay outputs (5 A, 250 V AC/30 V DC) for control and alarm |
| Display | 5.7 – inch color LCD with multi – language interface and waveform visualization |
| Communication Interfaces | Dual Ethernet ports (Modbus TCP/IP); RS – 485 (Modbus RTU); optional IEC 61850 |
| Power Supply | 88-300 V DC; 70-265 V AC (48-62 Hz); power consumption ≤ 20 W |
| Operating Temperature | -40°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions (W x L x H) | 180 mm x 165 mm x 215 mm |
| Weight | 1 kg |
| Enclosure Rating | IP52 (front panel); IP30 (rear terminals) |
| EMC Compliance | IEC 61000-4-2 (ESD: ±8 kV contact, ±15 kV air); IEC 61000-4-3 (RS: 10 V/m, 80-1000 MHz) |
| Vibration Resistance | IEC 60068-2-6: 10-500 Hz, 2 g peak acceleration |
| Shock Resistance | IEC 60068-2-27: 15 g peak acceleration, 11 ms duration |
| MTBF | 200,000 hours (per IEC 61709) |
| Compliance Certifications | UL, CE, RoHS, SIL2 |
Function Characteristics
- Comprehensive Protection Functions: Integrates overcurrent, undervoltage, overvoltage, ground fault, directional overcurrent, and phase imbalance protection to cover all common feeder fault scenarios.
- Enhanced HMI and Visualization: 5.7 – inch color LCD displays real – time measurements, fault records, and waveform captures, with a user – friendly interface for quick configuration and diagnostics.
- Dual Ethernet Connectivity: Dual Ethernet ports support Modbus TCP/IP for network redundancy and seamless integration into industrial automation and utility SCADA systems.
- Eight 4-20 mA Analog Outputs: SIL2 – compliant analog outputs provide continuous real – time data (current, voltage, power) to SCADA and process control systems for monitoring and closed – loop control.
- Advanced Fault Analysis: Captures fault waveforms (up to 1024 samples per cycle) and logs event data (1000+ events) for post – fault investigation and system optimization.
- Recloser and Sectionalizer Control: Built – in logic for automatic recloser operation and feeder sectionalization to minimize outage time and isolate faulted sections.
- Power Quality Monitoring: Measures voltage sags, swells, harmonics (up to 31st order), and power factor to assess distribution system health and compliance with IEEE standards.
- Flexible I/O Configuration: 8 digital inputs and 6 Form C relay outputs allow customization for local control, alarm, and interlocking with other equipment.
- Wide Power Supply Range: Operates on 88-300 V DC/70-265 V AC to adapt to unstable power conditions in utility and industrial settings.
- Cybersecurity Features: Implements IEC 62443 – 4 – 2 cybersecurity level 2 protection to prevent unauthorized access and data tampering.
Application Scenarios
- Power Utility Distribution Networks: Protects and manages medium – voltage feeders in substations and distribution grids, enabling fault isolation, load balancing, and integration with smart grid systems.
- Industrial Power Distribution: Safeguards feeders supplying power to manufacturing lines, motor control centers, and critical process equipment in oil refineries, chemical plants, and automotive facilities.
- Commercial Building Electrical Systems: Manages feeders for lighting, HVAC, and elevator systems in high – rise buildings, ensuring reliable power and reducing energy waste through load monitoring.
- Data Center Power Infrastructure: Protects UPS systems, server racks, and distribution panels, with fast fault detection to prevent downtime and data loss.
- Renewable Energy Integration: Controls feeders connecting solar farms and wind turbines to the grid, managing voltage fluctuations and grid – tie protection for stable power injection.
- Mining and Heavy Industry: Operates in harsh environments to protect feeders for crushers, conveyors, and heavy machinery, with rugged design resisting dust, vibration, and extreme temperatures.
- Water and Wastewater Treatment Plants: Manages feeders for pumps, blowers, and chemical dosing systems, ensuring continuous operation and compliance with environmental regulations.
Additional Information
- Configuration Software: Compatible with GE Multilin EnerVista 760 software for relay setup, protection logic programming, waveform analysis, and firmware updates.
- User Documentation: Refer to GE Multilin 760 Series Feeder Management Relay Manual (GEK – 106200) for wiring diagrams, protection settings, and troubleshooting guidelines.
- Warranty: 12 – month standard warranty for new units; extended warranty and 24/7 technical support available through authorized GE Grid Solutions distributors.
- Replacement Compatibility: Direct replacement for legacy Multilin 760 relays, with identical mounting dimensions and backward – compatible communication protocols for seamless system upgrades.
- Maintenance Requirements: Perform annual inspections of terminals and communication connections. Calibrate analog outputs every 24 months using NIST – traceable standards. Update firmware quarterly to address security vulnerabilities and enhance performance.
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