Description

The GE Multilin 750-P5-G5-D5-HI-A20-R-E-H is a digital feeder protection system engineered for the primary protection, management, and control of distribution feeders. This comprehensive relay offers reliable backup protection for buses, transformers, and transmission lines utilizing a convenient draw-out construction that simplifies maintenance and reduces product lifecycle costs. Equipped with precise built-in metering functions, the device eliminates the requirement for separate auxiliary metering components. It features 5 A phase current inputs, 5 A ground current inputs, and 5 A zero sequence current inputs to accommodate specific electrical system configurations. For automated system monitoring and interfacing, the unit incorporates eight 4 to 20 mA analog outputs. The relay supports standard industrial protocols such as Modbus RTU and DNP 3.0 to facilitate seamless integration into distributed control systems (DCS) and SCADA environments.

Features

• Complete protection, control, and management functions for distribution feeders in a single integrated unit.
• Draw-out construction design allowing for rapid replacement and minimized system downtime.
• Highly accurate built-in metering functions that eliminate the need for extra auxiliary metering infrastructure.
• Enhanced event recording capabilities including IRIG-B time synchronization, event reports, waveform capture, and data logging.
• Eight fully programmable, isolated 4 to 20 mA analog outputs for mapping critical system parameters.
• Built-in simulation and playback features to simplify testing and verification procedures.
• Flash memory support for easy product field upgrades and long-term functional adaptability.
• Harsh chemical environment protection option providing conformal coating for chemically corrosive and humid applications.

Applications

• Primary protection and control for various distribution feeders.
• Backup protection applications for buses, transformers, and transmission lines.
• Integrated asset and I/O monitoring in utility and industrial electrical networks.
• Advanced automation and control architectures requiring Modbus or DNP 3.0 network communication.

Ordering Information

Technical Specifications

Installation Guidelines

• Mounting Setup: Ensure the relay is securely panel-mounted utilizing standard cutout parameters intended for the draw-out unit frame.
• Grounding Connection: Establish a clean, low-impedance ground connection to the dedicated chassis grounding terminal to prevent electrical noise interference.
• Wiring Configurations: Keep high-current CT inputs and high-voltage VT wiring separated from low-voltage signal cables and communication links to mitigate EMI/RFI issues.
• Environmental Considerations: For units with option H, ensure external terminals and seals are securely positioned after mounting to preserve the integrity of the harsh chemical environment conformal coating.