GE SR489-P5-LO-A20-E

The GE SR489-P5-LO-A20-E is a generator management relay from the Multilin 489 series, designed by General Electric (GE) for comprehensive protection, control, and monitoring of synchronous and induction generators. Below is a detailed overview of its technical specifications, based on the search results.

⚡ 1. Basic Product Overview

• Model: SR489-P5-LO-A20-E
• Manufacturer: General Electric (GE)
• Application: Primarily used for protecting and managing synchronous and induction generators in various industrial settings, including cogeneration applications. It operates at frequencies of 25 Hz, 50 Hz, or 60 Hz .

? 2. Key Technical Specifications

? Electrical Parameters

• CT (Current Transformer) Secondary: 5 A
• Power Supply:
  • LO Control Power:
    • • DC: 20–60 V
      • AC: 20–48 V (at 48–62 Hz)
• Analog Output: 4–20 mA
• Frequency Range: 0.00–90.00 Hz
• Zero-Sequence Voltage Range: 0–25,000 V
• Power Factor Range: 0.01 (leading) to 1.00 (lagging)
• Reactive Power (Mvar) Range: -2.00 to 2.00 times rated voltage

? Inputs and Outputs

• RTD Inputs: 12 field-programmable RTD inputs for thermal monitoring (e.g., stator and bearing temperature) .
• Digital Inputs:
  • 9 digital inputs (2 predefined, 7 assignable) .
  • Predefined functions include breaker status (52/a or 52/b) and setpoint access .
• Analog Inputs: 4 isolated 4–20 mA analog inputs (configurable for 0–20 mA or 0–1 mA) .
• Output Relays: 6 Form-C output relays rated for:
  • 10 A at 30–250 V AC/DC
  • 30 A (for 0.2 seconds)
• Analog Outputs: 4 programmable analog outputs (4–20 mA or 0–1 mA, depending on order) .

? Communication Interfaces

• RS485 Ports: 2 ports supporting Modbus RTU or DNP 3.0 protocols (or both), up to 19,200 bps .
• RS232 Port: 1 front-facing port for local communication .
• Ethernet: Optional 10BaseT Ethernet support .

? 3. Display and User Interface

• Display: 40-character vacuum fluorescent display (VFD) for viewing values, diagnostics, and setpoints .
• Front Panel Features:
  • Numeric keypad, status LEDs, value adjustment keys, and control buttons (e.g., Reset, Enter, Menu navigation) .
  • Allows full control without an external computer .
• Status Indicators: 22 front-panel LEDs for system status .

Main Brand:

ABB       Allen-Bradley      Alstom      Bently       GE      MOOG 

Schneider   Woodward   HIMA   Honeywell   Emerson   Foxboro

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•Shipping Port: Xiamen

•Ship to you via Fedex/DHL/TNT/UPS/EMS

•Package: Original packing with cartons

FAQ

Q:What is the earliest time when you can make delivery?

A:We will make delivery once received your payment.

Q:If the product can’t work, can it be returned?

A:We provide one year warranty.

Q:How easy is it to obtain items?

A:New are no longer continuously manufactured, and therefore supply is scarce.

However, at SAUL we specialize in sourcing hard-to-find products, and although

the lead time varies, the average is between 5-7 business days.

Q:What is the typical price for the items?
A:SAUL ELECTRIC always gives customers excellent service and prices that

are highly competitive.Requirements for delivery and availability do affect pricing.

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Introduction to SAUL ELECTRIC:

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1. Integrating multiple renowned brands: SAUL ELECTRIC integrates multiple renowned brands in the field of industrial automation, providing customers with a wide range of product choices and high-quality solutions.
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The mission of SAUL ELECTRIC is to help customers improve productivity, reduce downtime, and provide high-quality services and diversified projects. SAUL ELECTRIC is your trusted partner !