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

Advanced Motor Protection for Medium Voltage Applications

The SR469-P5-HI-A20-E-H is a smart, draw-out relay from GE’s Multilin 469 series. Designed for medium voltage motors, it provides protection, monitoring, and flexible configuration in one compact unit.

Comprehensive Current Monitoring

The SR469 monitors phase, differential, and ground currents.

• CT primary: 1 to 5000 A
• CT secondary: 1 A or 5 A
• High accuracy under all conditions
• Withstands up to 80 times rated current for 1 second

Voltage Input with High Precision

It supports voltage monitoring with a full-scale input of 273 V AC.

• VT ratio adjustable from 1.00 to 150.00:1
• Conversion range: 0.05 to 1.00 x full scale
• Accuracy within ±0.5%

Multiple Digital Inputs and Control Features

The SR469 includes 9 opto-isolated digital inputs.

• Supports dry contact or NPN transistor inputs
• Configurable functions: trip, alarm, start block
• 24 V DC sensor supply included

RTD Monitoring for Temperature Protection

The relay handles various RTD types: Pt100, Ni100, Ni120, Cu10.

• Range: –50°C to +250°C
• Accuracy: ±2°C
• Supports hot and cold curve settings

Versatile Analog Input Options

It supports 0–1 mA, 0–20 mA, or 4–20 mA inputs.

• Input impedance: 226 Ohms
• Accuracy: ±1% full scale
• Fast 100 ms response time

Motor Protection and Diagnostics

The SR469 features advanced protection algorithms:

• Overload, stall, thermal model with 15 standard curves
• Undercurrent, unbalance, and short-circuit detection
• Ground fault and phase differential protection
• Configurable trip and alarm thresholds

Start-Up and Operational Timers

It offers precise control during motor operations.

• Acceleration timer: 1.0 to 250.0 seconds
• Restart and jogging block timers
• Reduced voltage start with current or time control

Built-In Trip Coil Supervision

Ensures reliable tripping at all times.

• Voltage range: 20 to 300 V AC/DC
• Monitors trickle current for coil health

Flexible Communication and Integration

The Multilin SR469 supports multiple communication protocols.

• Easily integrates into both modern and legacy systems
• Remote monitoring and fast data exchange
• Compatible with GE configuration software