Protection functions · 58

Rectification failure relay

Detects failure or abnormal operation in a rectifier arrangement.

SLD / Schematic · 58Rectification failure relay: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

Detects failure or abnormal operation in a rectifier arrangement.

In a drafting package, connect this reference to the rectifier monitoring circuit and DC output reference. The associated drawing should trace the failure alarm or associated excitation trip path; the number identifies the role and does not specify the terminal arrangement, ratings or operating settings.

This designation is useful when reading machine and legacy control drawings. Retain the documented function on an existing drawing and consult the original equipment manual before assigning it to a new design.

How to read it

  • Identify the rectifier monitoring circuit and DC output reference.
  • Trace the failure alarm or associated excitation trip path.

Information to show or reference

  • Label the rectifier monitoring circuit and DC output reference.
  • Cross-reference the failure alarm or associated excitation trip path.
  • Identify the device tag, manual revision and logic drawing that define this implementation.

A distinction that matters

Rectification failure supervision differs from a general DC undervoltage function.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

ANSI device-number and suffix reference table

Public manufacturer number/name association. Drafting explanations are independently written.

Schweitzer Engineering Laboratories · Public reference checked 13 October 2026 · Link only

IEEE C37.2-2022: power-system device function numbers

Normative device-number publication; exact edition wording and compliance require the licensed standard.

IEEE · Public reference checked 13 October 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 13 October 2026

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