Relay Retrofit - Customized Solutions for Protection Relays

Modernize legacy protection relays with confidence without disrupting your operations.

Modernizing Protection Relays for Reliable Performance

Aging protection relays can limit reliability, increase maintenance costs, and slow digital transformation. ABB’s relay retrofit solutions enable a smooth, planned migration from legacy relays to modern protection technology, enhancing performance while preserving existing infrastructure.

 

Whether driven by obsolescence, system expansion, or digitalization goals, our approach ensures a seamless upgrade tailored to your specific needs.

Your Value

ABB Electrification Service delivers end-to-end relay retrofit expertise. From planning to commissioning so you can modernize safely, efficiently, and cost-effectively. We support migrations across ABB SPACOM, RE500, REF542plus, Relion 615/620/630 series, and equivalent non-ABB relays, upgrading to modern Relion platforms such as REX615 and REX640.

Proactive collaboration from concept through execution., Multiple migration paths to match technical and business priorities., Proven experience across ABB and non-ABB relay platforms., Ready-to-install solutions that reduce risk and downtime.

Your Benefits

<p>From readymade retrofit programs to fully customized solutions or one-to-one relay upgrades, ABB ensures a seamless retrofit experience, designed around your system, your timeline, and your future needs.</p>

Protect uptime

<p>Planned migrations with minimal service interruption.</p>

Control costs

<p>Avoid costly full substation replacements.</p>

Get the right fit

<p>Customized designs engineered for your application.</p>

Maintain appearance

<p>Professional finish aligned with existing installations.</p>

Enable innovation

<p>Ready for modern grid and digitalization requirements.</p>

Simplify operations

<p>Improved diagnostics, faster response, and higher&nbsp;reliability.</p>

Frequently Asked Questions

  1. Which relay types are supported for retrofit?

    ABB supports both ABB and non-ABB protection relays, including SPACOM, RE500, REF542plus, and Relion 615/620/630 series, upgrading them seamlessly to modern Relion relays such as REX615 and REX640.

  2. What retrofit options does ABB offer?

     

    ABB provides multiple relay retrofit options:
     

    • Readymade retrofit programs for fast, cost-effective upgrades.
    • One-to-one relay upgrades for direct replacement.
    • Customized retrofit solutions tailored to your specific application and operational requirements.

     

  3. What are the benefits of retrofitting legacy protection relays?

    Retrofit solutions improve reliability, reduce maintenance costs, and enable digitalization. Benefits include:

     

    • Planned upgrades with minimal downtime.

    • Cost savings over full substation replacement.

    • Tailored solutions for your unique system.

    • Professional finish aligned with existing installations.

    • Faster diagnostics, improved response, and enhanced operational efficiency.