SR469-P1-LO-A20-E | GE Multilin Motor Management Relay

Description

The SR469 Motor Protection System, a member of the SR family of relays, provides protection, control, simplified configuration and advanced communications in a cost effective industry leading draw-out construction. Designed for medium voltage motors, the 469 delivers advanced protection with customizable overload curves and single CT differential protection for added flexibility. The 469 also provides simplified configuration using the Motor Settings Auto-Configurator, providing a quick and easy set-up of motor parameters. Coupled with advanced protection and diagnostics, the 469 provides users the flexibility of multiple communication protocols allowing integration into new and existing control networks. Key Benefits Voltage dependent overload curves, torque metering and protection, broken rotor bar protection Most advanced thermal model - Multiple RTD inputs for stator thermal protection Minimize replacement time - Draw-out construction Complete asset monitoring - Temperature, Analog I/O, full metering Improve uptime of auxiliary equipment - Through I/O monitoring Reduce troubleshooting time and maintenance costs - Event reports, waveform capture, data logger Built in simulation functions simplify testing and commissioning Cost Effective Access to information - Through standard RS232 & RS485 serial ports, and optional Ethernet and DeviceNet Ports Field upgradeable firmware and settings Optional Conformal coating for exposure Applications Protection and Management of three phase medium and large horsepower motors and driven equipment, including high inertia, two speed and reduced-voltage start motors

Protection and Control • Thermal model biased with RTD and negativesequence current feedback • Start supervision and inhibit • Mechanical jam • Voltage compensated acceleration • Undervoltage, overvoltage • Underfrequency • Stator differential protection • Thermal overload • Overtemperature protection • Phase and ground overcurrent • Current unbalance • Power elements • Torque protection • Dual overload curves for 2 speed motors • Reduced voltage starting control Communications • Multiple Ports - 10baseT Ethernet, RS485,RS232, RS422, DeviceNet • Multiple Protocols - Modbus RTU, Modbus TCP/IP, DeviceNet Monitoring & Metering • A, V, W, var, VA, PF, Hz, Wh, varh, demand • Torque, temperature (12 RTDs) • Event recorder • Oscillography & Data Logger (trending) • Statistical information & learned motor data

Protection and Control The 469 is a digital motor protection systemdesigned to protect and manage medium andlarge motors and driven equipment.   It containsa full range of selectively enabled, self containedprotection and control elements as detailed inthe Functional Block Diagram and Features table. Motor Thermal Model The primary protective function of the 469 is thethermal model with six key elements: • Overload Curves • Unbalance Biasing • Hot/Cold Safe Stall Ratio • Motor Cooling Time Constants • Start Inhibit and Emergency Restart • RTD Biasing Overload Curves The curves can take one of three formats:standard, custom, or voltage dependent.   For allcurve styles, the 469 retains thermal memoryin a thermal capacity used register whichis updated every 0.1 second.   The overloadpickup determines where the running overloadcurve begins. The 469 standard overload curves are ofstandard shape with a multiplier value of 1 to 15. The voltage dependent overload curves areused in high inertia load applications, wheremotor acceleration time can actually exceedthe safe stall time and motor thermal limits.  During motor acceleration, the programmedthermal overload curve is dynamically adjustedwith reference to the system voltage level.   Theselection of the overload curve type and theshape is based on motor thermal limit curvesprovided by motor vendor.

The company focuses on DCS, PLC, robot, large servo four systems

The main products are various modules/cards, controllers, touch screens, servo drivers Company advantage: Supply imported original products, professional production of spare parts One year warranty, fast delivery time, complete supply !！！ ① 24 hours email response (12 hours); ② For shipment outside Asia, please contact the seller.

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