GE Multilin SR489-P1-HI-A20-E Generator Management Relay

Overview

The GE SR489-P1-HI-A20-E is a Generator Management Relay. It delivers protection, control, and diagnostics for generators in demanding industrial environments. This model integrates advanced monitoring, fast response times, and robust communication. Therefore, it ensures reliable and stable generator performance under varied operating conditions.

Technical Specifications

General

• Product Type: Generator Management Relay
• Manufacturer: General Electric (GE)
• Model Number: SR489-P1-HI-A20-E
• Mounting Type: Panel-mounted
• Display: E = Enhanced LCD display
• Communication Interface: RS232

Power Supply

• Control Power (DC): 90 to 300 V
• Control Power (AC): 70 to 265 V
• Frequency Range: 48 to 62 Hz

Current and Voltage Inputs

• Phase Current Input: P1 = 1 A phase CT secondary
• Output/Neutral Current Conversion Range: 0.02 to 20 × CT

Analog I/O

• Analog Output: A20 = 4–20 mA
• Analog Input Supply: +24 V DC at 100 mA max

Performance

• Relays Operation Time: 10 ms
• Energy Metering Update Rate: 50 ms
• Voltage Phase Reversal Timing Accuracy: 200 to 400 ms
• Phase Differential Curve Shape: Dual Slope

Environmental

• Operating Temperature: -25°C to +50°C
• Ingress Protection: IEC60529 Standard
• IRIG-B DC Shift: TTL compatible