GE SR489-P5-HI-A20 Generator Management Relay

FAQ

Q1: What is the GE SR489-P5-HI-A20?
A: It is a GE Multilin 489 Generator Management Relay designed for generator protection, monitoring, metering, and control.

Q2: What does P5 indicate?
A: P5 indicates 5 A phase CT secondary inputs.

Q3: What is the control power supply?
A: The HI configuration supports 90–300 V DC or 70–265 V AC at 48–62 Hz.

Q4: What analog outputs are provided?
A: The A20 configuration provides four 4–20 mA analog outputs.

Q5: What communication interfaces are available?
A: The SR489 provides RS232 and RS485 communication interfaces. The 489 family also supports Modbus RTU, Modbus TCP/IP, and DNP 3.0.

Q6: What monitoring functions does the relay provide?
A: It provides generator metering, 12 RTD inputs for temperature monitoring, and four analog transducer inputs for applications such as vibration monitoring.

Q7: Is the SR489-P5-HI-A20 still manufactured?
A: No. GE Vernova identifies the Multilin 489 as a legacy product and states that manufacturing has been discontinued.

Q8: What are the dimensions and weight?
A: The specified dimensions are 252 × 216 × 224 mm, and the weight is 7.7 kg.

GE SR489-P5-HI-A20

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