GE SR469‑P5‑HI‑A20‑E

Product Overview

The GE SR469‑P5‑HI‑A20‑E is an advanced industrial motor protection and management relay from GE’s Multilin 469 series, designed to maintain the safety, reliability, and operational efficiency of medium‑ to large‑sized electric motors and their associated systems. It enhances the traditional SR469 platform with improved features such as an enhanced display, advanced diagnostics, and modern communication capabilities — ideal for modern automation and power systems.

The relay offers multi‑layer motor protection while providing actionable data for monitoring, fault analysis, and remote system integration, making it suitable for both traditional electrical systems and digital control architectures.

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Key Technical Specifications

Parameter	Specification
Model	SR469‑P5‑HI‑A20‑E
Product Type	Motor Management / Protection Relay
Manufacturer	General Electric (GE)
Series	Multilin 469 Relay
Control Power Range	90–300 V DC / 70–265 V AC @ 48 – 62 Hz
Phase Current Input	5 A CT secondaries
Analog Outputs	4 × 4–20 mA isolated
Communication Interfaces	RS‑232, RS‑485 / Modbus RTU/TCP
Display	40‑character LCD + LEDs + Keypad
Operating Temp.	Typically −20 °C to +60 °C
Storage Temp.	−40 °C to +80 °C
Certifications	CE / ISO / UL / CSA (varies by market)
Enclosure Rating	IP20‑X (indoor applications)
Typical Weight	Approx. 4–5 kg (varies by config)

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Main Features

Robust Motor Protection

The SR469‑P5‑HI‑A20‑E includes an extensive suite of protective functions: overload, phase unbalance, phase loss, short‑circuit protection, ground fault detection, and thermal modeling — all designed to protect motors and reduce operational risks.

Enhanced User Interface

A large LCD display, status LEDs, and tactile keypad provide clear feedback and simple navigation through settings and diagnostic menus. Local data such as current values, fault logs, and protection thresholds are easily viewable.

Communication Ready

The relay supports RS‑232 and RS‑485 communication, with Modbus RTU/TCP capability for integration into SCADA or PLC systems — enabling remote monitoring, control, and data logging.

Stable Analog Outputs

Four isolated 4–20 mA outputs enable retransmission of key motor parameters — such as current, thermal capacity, or vibration trends — to external control or monitoring systems.

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Structure and Composition

The SR469‑P5‑HI‑A20‑E relay integrates several key subsystems in its construction:

• Core Protection Processor – Determines operational status and executes protection logic

• Current and Temperature Signal Inputs – Receives CT signals and optional RTD feedback

• Front Panel Interface – LCD display with keypad and LED indicators

• Communication Ports – RS‑232/RS‑485 terminals for external connections

• Analog Output Drivers – Provide isolated current outputs for trending

• Enclosure and Mounting Frame – Designed for panel installation in MCC or control cabinets
  This layout supports rugged service life and ease of access for maintenance.

  
  

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Typical Applications

The SR469‑P5‑HI‑A20‑E is widely used across industries where motor operation safety and continuous uptime are critical:

• Motor Control Centers (MCCs) in manufacturing facilities

• Pumping and compressor stations in water treatment or oil & gas sectors

• Heavy industrial drives such as conveyors, fans, and mills

• Power generation plants for auxiliary and main motor protection

• Process automation systems that require integration with central control systems
  Its modular design and communication support suit both legacy and modern connected infrastructures.

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Installation & Maintenance

Installation Notes:

• Mount in a panel or enclosure following proper cut‑out specifications.

• Connect CT secondaries, power supply, analog outputs, and communication lines as per wiring diagrams.

• Verify correct polarity and grounding before commissioning.

Maintenance Tips:

• Periodically inspect connections and clean dust from air vents.

• Check communication logs and event history to identify trends or faults.

• Update firmware and configuration settings as needed during scheduled maintenance.

Proper installation and upkeep help guarantee long service life and dependable operation.

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Why Choose the SR469‑P5‑HI‑A20‑E?

• Comprehensive motor protection with advanced diagnostic feedback

• Modern communications for integration with automation systems

• User‑friendly interface for commissioning and troubleshooting

• Compatible across a wide range of voltage and current systems

• Enhanced relay performance for demanding industrial environments