GE 489-P5-LO-A20
Multilin Motor Protection Relay
Product Overview
The GE 489-P5-LO-A20 is a sophisticated motor protection relay engineered to safeguard medium and large induction motors in industrial environments. As a key component of GE's Multilin protective relay series, this device delivers comprehensive monitoring and protection against electrical faults, thermal overloads, and abnormal operating conditions. It integrates advanced microprocessor technology with flexible configuration options, making it suitable for critical motor applications where reliability and operational continuity are paramount.
Core Protection Features
- • Thermal overload protection with adjustable curves (IEC, NEMA, user-defined)
- • Phase overcurrent and short circuit protection with directional elements
- • Earth fault detection with high-sensitivity sensing
- • Motor stall, phase unbalance, and underload protection
- • Advanced diagnostics with fault event recording and oscillography
- • Flexible communication for integration with plant control systems
Technical Specifications
Parameter | Specifications |
---|---|
Current Inputs | 3 phase + neutral, 1A or 5A nominal (CT primary up to 5000A) |
Voltage Inputs | 3 phase, 100V, 230V, or 400V nominal |
Communication | Ethernet/IP, Modbus RTU/TCP, DNP3.0, IEC 61850 (optional) |
Power Supply | 85-265V AC/DC (wide range), 12-48V DC (optional) |
Operating Environment | Temperature: -40°C to +70°C (-40°F to +158°F); Humidity: 5-95% non-condensing |
Outputs | 8 configurable digital outputs (Form C contacts), 4 analog outputs (4-20mA) |
Industrial Applications
- Large induction motor protection in manufacturing facilities
- Pump and compressor motor control in oil and gas processing
- HVAC system motors in commercial and industrial buildings
- Water and wastewater treatment plant motor protection
- Mining equipment and conveyor system motors
- Power generation auxiliary motors