Description
argument
Phase CT secondary coil: 5 A
Control power supply: The high control power supply is 90-300 volts direct current (VDC) and 70,265 volts alternating current (VAC) at a frequency of 48-62 Hz
Analog output: 4 to 20 mA
Fuse current rating: 2.5A, fuse type is 5x20mm HRC SLO-BLO Littelfuse, fuse type is 215-02.5
specification
Product series: 489 series generator management relay
Type: Generator management relay
Accuracy: Not explicitly mentioned, but GE products generally have a high level of accuracy
Control principle: DCS (Distributed Control System)
trait
Enhanced display: LCD is larger than the basic display, providing a clearer visual experience
Programmable: The user can set the parameters and logic of the relay according to the specific application requirements
Communication function: Support a variety of communication protocols and interfaces, such as Modbus, Profibus, etc., to facilitate data exchange and remote monitoring with other devices or systems
High reliability: GE is a well-known provider of electrical and digital solutions, and its products have a good reputation in the industry, and the relay has undergone rigorous quality control and testing to ensure stable operation in harsh industrial environments
Protection function: It can monitor the various operating parameters of the generator, such as voltage, current, frequency and power, etc., and trigger the corresponding protective action when the parameters exceed the safety range, such as disconnecting the power supply or starting the alarm
Control function: In addition to the protection function, it can also be used to control the operation of the generator, such as starting, stopping and switching, to ensure the stable operation of the power system 
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