SR489-P5-LO-A20-E generator management relay

12 RTD (Resistance Temperature detector) inputs for temperature monitoring.
6 output relays to control generator start, stop and switch operations.
Four isolated 4-20 mA analog inputs and outputs for vibration monitoring and more.
7 assignable digital inputs for remote reset, test inputs, and more.
Communication port: Has two RS485 communication ports that support Modbus RTU or DNP 3.0 protocols (or both) up to 19200 bps.
Protection function: including overload protection, short circuit protection, undervoltage protection, overvoltage protection, etc., to ensure the stable operation of the generator.
Control function: Control generator start, stop and switch operations, to ensure the stable operation of the power system.
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Description

Overview

Essential details：SR489-P5-LO-A20-E generator management relay

Product Description

The SR489-P5-LO-A20-E is a generator management relay manufactured by GE Multilin and belongs to the Multilin 489 series. This relay is an economical solution for the protection, metering and monitoring functions of small and medium-sized generators. The following are the main features and parameters of the product:
Input/output configuration:
12 RTD (Resistance Temperature detector) inputs for temperature monitoring.
6 output relays to control generator start, stop and switch operations.
Four isolated 4-20 mA analog inputs and outputs for vibration monitoring and more.
7 assignable digital inputs for remote reset, test inputs, and more.
Communication port: Has two RS485 communication ports that support Modbus RTU or DNP 3.0 protocols (or both) up to 19200 bps.
Protection function: including overload protection, short circuit protection, undervoltage protection, overvoltage protection, etc., to ensure the stable operation of the generator.
Control function: Control generator start, stop and switch operations, to ensure the stable operation of the power system.
Programmability: The user can set the parameters and logic of the relay according to the specific application requirements, and adapt to different generator systems and operating environments.

SR489-P5-LO-A20-E

Product parameter

Structure and size:
Compact structure, small size, easy to install and maintain.
The dimensions are 21.6 cm (L) x 22.4 cm (W) x 25.2 cm (H).
Weight: About 10 kg.
Operating voltage and frequency: Suitable for 48-62 VAC at 20-60 VDC or 20-48 Hz, operating at 25, 50 or 60 Hz.
Analog output: Analog output from 4 to 20 mA is available.
Parameter range:
Frequency parameter range: 0.00 to 90.00 Hz.
Neutral line voltage (3rd) Parameter range: 0 to 25000 V.
Power factor parameters range: 0.01 to 1.00 Lead/lag.
Reactive power (Mvar) parameter range: -2.00 to 2.00 times rated voltage.

APPLICATION

It is widely used in electric power plants, industrial power generation, Marine and offshore engineering, power distribution systems, construction and commercial fields, mining and oil and gas industries, and medical facilities.
In addition, the Multilin 489 system offers advanced protection and monitoring features, including stator and bearing thermal protection with RTD and analog inputs for vibration monitoring, as well as enhanced troubleshooting capabilities such as IRIG-B time synchronization event logging, waveform capture and data loggers

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