GE Multilin 489-P5-H1-A20 Generator Management Relay 489.Manufacturing for 489-P5-H1-A20 has been discontinued.The SR489 Generator Protection System, a member of the SR family of relays, provides protection, control and advanced communications in a cost effective industry leading draw-out construction. Designed for small and medium sized generators, the 489 delivers advanced protection including generator stator differential protection. The 489 also includes detailed diagnostic information allowing for reduced troubleshooting time.
Key Benefits:
Complete, secure protection of small to medium sized generators
Easy to use generator protection supported by industry leading software tools.
Advanced protection and monitoring features including the use of RTDs for stator and bearing thermal protection and Analog Inputs for vibration monitoring
Draw-out construction allowing for minimized downtime and easy removal/installation of the 489 during maintenance routines
Large, user-friendly front panel interface
Enhanced generator troubleshooting through the use of IRIG-B time synchronized event records, waveform capturing, and data loggers
Simplified setpoint verification testing using built in waveform simulation functionality
Cost effective communication through industry standard hardware (RS232, RS485, 10BaseT Ethernet) and protocols (Modbus RTU, Modbus TCP/IP, DNP 3.0)
Harsh Chemical Environment Option
Synchronous or induction generators operating at 25Hz, 50Hz or 60Hz
Primary or backup protection in cogeneration applications
Technical Parameters
Processor - related: The document does not clearly mention the type of the processor. However, judging from its performance, the processor should be capable of meeting the requirements for quickly processing and analyzing various operating parameters of the generator.
Storage: Detailed parameters such as memory and storage flash are not mentioned. Nevertheless, to ensure the normal operation of the device and data storage, it should have an appropriate capacity of memory and storage media to store programs, configuration information, and operating data.
Interface Configuration: It is equipped with Ethernet channels, which facilitate network communication for remote monitoring and data transmission. It also has 2 RS - 232C interfaces (COM3 and COM4). The baud rate of COM3 is 75 - 19200, and it is non - optically isolated; the baud rate of COM4 is 9600, and it is optically isolated. These interfaces can be used to connect different devices, such as debugging tools and sensors, to achieve data interaction.
Electrical Parameters: The operating power supply is 24V DC (19.2 - 30V DC), which can adapt to a certain range of voltage fluctuations and ensure the stable operation of the device under different power supply conditions. The power consumption at +24V is 287 / 487mA (typ/max), and the typical power dissipation is 6.9W (11.4W max), reflecting the energy - use efficiency of the device.
Redundancy Features: It supports CPU redundancy, and the maximum redundancy switch - over time is 10ms. When the main CPU fails, the standby CPU can quickly take over the work to ensure the continuous operation of the device. It also has a redundant power supply status input, which can be connected to a redundant power supply to improve power supply reliability and reduce the risk of device downtime caused by power failures.
Application Configuration: It can be configured through the 800xA Control Builder, providing easy and flexible operation. Each controller can run 32 applications, and each application contains 64 programs and 128 diagrams. The application cycle time can be as low as 1ms, which can meet the requirements of complex control logic and fast response.
Environmental Adaptability: The protection level is IP20, which can prevent a certain degree of foreign object intrusion and dust entry. The operating temperature range is from +5°C to +55°C (+41°F to +131°F), and the storage temperature range is from -40°C to +70°C (-40°F to +158°F), enabling it to adapt to various industrial environments. It complies with multiple environmental standards, such as Pollution Degree 2, Corrosion Protection G3 standard, and a relative humidity of 5% - 95% (non - condensing), demonstrating good environmental tolerance.
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