GE Multilin | SR489 | 489-P1-HI-A20-E | Generator Management Relay

The 489 Generator Management Relay is a microprocessor-based relay designed for the protection and management of synchronous and induction generators. 

NEUTRAL OVERVOLTAGE (FUNDAMENTAL)

• Pick-up Level: 2.0 to 100.0 V secondary in steps of 0.01
• Time Delay: 0.1 to 120.0 s in steps of 0.1
• Pickup Accuracy: As per Neutral Voltage Input
• Timing Accuracy: ±100 ms or ±0.5% of total time
• Elements: Trip and Alarm

NEUTRAL UNDERVOLTAGE (3RD HARMONIC)

• Blocking Signals: Low power and low voltage if open delta
• Pick-up Level: 0.5 to 20.0 V secondary in steps of 0.01 if open delta VT; adaptive if wye VT
• Time Delay: 5 to 120 s in steps of 1
• Pickup Accuracy:
  • At £20.0 V secondary: As per Neutral Voltage Input
  • At >20.0 V secondary: ±5% of pickup
• Timing Accuracy: ±3.0 s
• Elements: Trip and Alarm

LOSS OF EXCITATION (IMPEDANCE)

• Pickup Level: 2.5 to 300.0 W secondary in steps of 0.1 with adjustable impedance offset 1.0 to 300.0 W secondary in steps of 0.1
• Time Delay: 0.1 to 10.0 s in steps of 0.1
• Pickup Accuracy: As per Voltage and Phase Current Inputs
• Timing Accuracy: ±100 ms or ±0.5% of total time
• Elements: Trip (2 zones using impedance circles)

DISTANCE (IMPEDANCE)

• Pickup Levels: 0.1 to 500.0 W secondary in steps of 0.1 50 to 85°
• Time Delay: 0.0 to 150.0 s in steps of 0.1
• Pickup Accuracy: As per Voltage and Phase Current Inputs
• Timing Accuracy: 150 ms ±50 ms or ±0.5% of total time
• Elements: Trip (two trip zones)

REACTIVE POWER

• Block From Online: 0 to 5000 s in steps of 1
• Pick-up Level: 0.02 to 1.50 ´ rated Mvar (positive and negative)
• Time Delay: 0.2 to 120.0 s in steps of 0.1
• Pickup Accuracy: See power metering
• Timing Accuracy: ±100ms or ±0.5% of total time
• Elements: Trip and Alarm

REVERSE POWER

• Block From Online: 0 to 5000 s in steps of 1
• Pick-up Level: 0.02 to 0.99 ´ rated MW
• Time Delay: 0.2 to 120.0 s in steps of 0.1
• Pickup Accuracy: See power metering
• Timing Accuracy: ±100 ms or ±0.5% of total time
• Elements: Trip and Alarm

PACKAGING:

• Shipping Box: 12”´11”´10” (W ´ H ´ D) 30.5cm ´ 27.9cm ´ 25.4cm
• Shipping Weight: 17 lbs Max / 7.7 kg