GE Multilin SR469-P5-HI-A20 Motor Management Relay

Description

Technical Specifications

Electrical Specifications

• Phase Current Input: P5 = 5 A (5 A phase CT secondary current input)
• Control Power Supply: HI = 90–300 VDC / 70–265 VAC @ 48–62 Hz (universal wide‑range power)
• Analog Output: A20 = 4 × 4–20 mA configurable analog outputs
• RTD Inputs: Supports Pt100, Pt1000, and Cu10 RTD types for motor winding and bearing temperature monitoring
• Digital Inputs: 9 opto‑isolated, programmable digital inputs for remote control and status signaling
• Relay Outputs: Configurable Form A/C relay outputs for tripping, alarming, and control functions
• Communication Ports: RS‑485 (Modbus RTU), RS‑232; supports optional Ethernet, Profibus, DNP3, and IEC 61850 protocols

Environmental & Physical Specifications

• Operating Temperature: -40°C to +60°C
• Storage Temperature: -40°C to +80°C
• Relative Humidity: Up to 95% (non‑condensing) at 55°C
• Pollution Degree: 2
• Ingress Protection: IP40 (front panel) / IP20 (rear enclosure)
• Dimensions: 144 mm × 144 mm × 112 mm
• Weight: Approximately 7.3 kg
• Mounting: Panel‑mount with draw‑out chassis design
• Certifications: UL, cUL, CE, IEC 61010‑1 compliant

Key Features

• Comprehensive Motor Protection: Delivers full protection including thermal overload (with thermal memory), stall, phase imbalance (negative sequence), ground fault, short‑circuit, phase reversal, over/undervoltage, and RTD‑based temperature protection.
• Advanced Thermal Modeling: Implements precise motor thermal capacity tracking with hot/cold safe stall ratios and configurable cooling time constants.
• Customizable Protection Curves: Offers standard, voltage‑dependent, and user‑programmable overload curves to match specific motor thermal characteristics.
• Enhanced Monitoring & Metering: Provides real‑time measurement of three‑phase current/voltage, active/reactive/apparent power, power factor, energy consumption, frequency, and thermal utilization.
• User‑Friendly Interface: Features a 40‑character backlit LCD with a keypad for local configuration, parameter viewing, and fault diagnostics.
• Event & Fault Recording: Logs detailed fault data, operational events, and waveform captures for rapid troubleshooting and analysis.
• Draw‑Out & Hot‑Swappable Design: Allows module replacement without system shutdown, minimizing downtime during maintenance.
• Flexible Communication: Supports multiple industrial protocols for seamless integration with PLCs, DCS, and SCADA systems.
• Harsh Environment Resilience: Operates reliably in extreme temperatures and industrial environments with high humidity and vibration.

Application Scenarios

• Oil & Gas Industry: Motor protection for pumps, compressors, fans, and conveyors in refineries, drilling rigs, and pipeline systems.
• Power Generation: Protection of large motors in thermal, hydro, and renewable power plants.
• Petrochemical & Chemical Processing: Safe operation of motors in chemical manufacturing and processing facilities.
• Water & Wastewater: Motor management for pumps, blowers, and mixers in water treatment and distribution plants.
• Mining & Minerals: Protection of heavy‑duty motors in mining conveyors, crushers, mills, and material handling systems.
• Manufacturing & Industrial Automation: Motor control for extruders, mixers, large fans, and production line machinery in factories.
• Marine & Offshore: Reliable motor protection in marine propulsion systems and offshore platform operations.
• Steel & Cement Production: Motor management for kilns, mills, and material processing equipment in heavy industry.