GE 489-P5-LO-A20 Generator Management Relay

• Power Range:
  • Reactive power (Mvar): -2.00 to 2.00 times rated voltage
  • Real power and apparent power: -2.00 to 2.00 times rated voltage
• Dimensions: 21.6 cm (length) x 22.4 cm (width) x 25.2 cm (height)
• Weight: Approximately 10 kg
• Display: 40-character vacuum fluorescent display
• Communication Ports: 2 RS485 ports (supporting Modbus RTU or DNP 3.0 protocols, up to 19200 bps)
• RTD Inputs: 12 (field-programmable)
• Output Relays: 6 (Form C, 10A/30-250 Vac or DC)
• Digital Inputs: 7 (assignable)

Functional Characteristics:

• Comprehensive Protection Functions:
  • Overload protection: Triggers alarms or trips when current exceeds rated values.
  • Short-circuit protection: Rapidly cuts off fault currents to prevent equipment damage.
  • Voltage anomaly protection: Detects overvoltage, undervoltage, and voltage imbalance to safeguard motor safety.
  • Thermal protection: Monitors stator and bearing temperatures via RTD inputs to prevent overheating.
  • Differential protection: Provides percentage differential protection to detect internal generator faults.
• Monitoring Functions:
  • Real-time display of key parameters such as current, voltage, frequency, and power factor.
• Control Functions:
  • Supports remote parameter modification and operation via RS485 or RS232 interfaces.
• User-Friendly Interface:
  • Front panel includes status LEDs, a digital keyboard, and an LCD screen for local parameter viewing and operation.
• High Reliability:
  • Designed to comply with SWC and C37.990 EMI/RFI standards, ensuring stable operation in harsh industrial environments.
• Long Lifespan:
  • Utilizes high-quality materials and components for extended service life.

Application Scenarios:

• Power Plants:
  • Used for the protection and control of various types of generators, including steam turbine generators and hydroelectric generators.
• Industrial Enterprises:
  • Protects and controls generators in self-provided power generation systems.
• Data Centers:
  • Safeguards backup generators to ensure uninterrupted power supply.
• Other Industries:
  • Applicable in petrochemical, aerospace, and electrical control systems where reliable generator protection is essential.