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489-P5-HI-A20-T

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Generator Management Relay for 489 Series GE Multilin Relays. This unit is Enhanced with Ethernet 10Base-T

489-P5-HI-A20-T

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Generator Management Relay for 489 Series GE Multilin Relays. This unit is Enhanced with Ethernet 10Base-T

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Frequently Asked Questions about 489-P5-HI-A20-T

What does the letter T stand for in the part number 489-P5-HI-A20-T for the GE Generator Management Relay?
The letter T in the part number 489-P5-HI-A20-T for the GE generator management relay means that the generator is enhanced with ethernet (10Base-T).
Is there a simulation mode for the 489-P5-HI-A20-T GE Generator Management Relay?
Yes, there is a simulation mode. Please refer to the manual in chapter 5, S12 TESTING SIMULATION MODE 5-100. The manual can be found as a PDF with the manual part number: 1601-0150-AE.
How many types of messages of display for this 489-P5-HI-A20-T GE generator Manangement Relay have for setup?
This GE Generator Management Relay has three different types of messages for display setup. They are displayed as actual value, setpoint, and target messages.
How is the panel keypad used in navigating through the menu?
Please refer to the manual for panel keying examples for navigating through the menu structure. In the manual in chapter 1 USING THE RELAY PANEL KEYING EXAMPLE, can explain how to navigate throught the menu. The manual can be found in a PDF with the manual part number as 1601-0150-AE.

Product Description

489-P5-HI-A20-T is a generator management relay that is manufactured by GE Multilin for the 489 series. This relay has 5 A phase CT secondaries. The HI control power is 90-300 VDC and 70265 VAC at 48-62 Hz. The analog outputs on this relay are 4 to 20 mA. This relay has an enhanced display with a larger LCD and Ethernet. There is 1 non-isolated front panel RS232 port and 2 RS485 ports isolated together at 36 Vpk. The RS485 baud rates are 300, 1200, 2400, 4800, 9600, and 19200. The RS232 baud rate is 9600. The protocol is Modbus RTU / half duplex, DNP 3.0. The dielectric strength is 1.9 kV AC for one second or 1.6 kV AC for one minute, per UL 508.

It is important to test the relay helps to ensure that the CTs and the wiring are complete and correct. The following are the tests that must be completed on the relay: the output current accuracy test, the phase voltage input accuracy test, the ground, neutral, and differential current accuracy test, the neutral voltage (fundamental) accuracy test, the negative sequence current accuracy test, the RTD accuracy test, the digital input and trip coil supervision accuracy test, the analog input and outputs test, the output relay test, the overload curve test, the power measurement test, the reactive power test, the voltage phase reversal test, the GE Multilin (HGF) ground current accuracy test, the neutral voltage (3rd harmonic) accuracy test, the phase differential trip test, and the voltage restrained overcurrent test.

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