Protective Relay Reference

Protective Relay Reference

A neutral reference on protective relays and their testing.

35 Entries
199 Data records
9 Sources cited
2 Standard editions tracked

Families

  • Test methods

    34 entries

    Test methods applied to electrical power equipment at acceptance and in maintenance, each with its purpose, principle and the standards that govern it.

  • Standards

    1 entry

    The standards, specifications and codes that govern electrical testing, with edition history, status and scope recorded from the publishers.

Recently changed

  1. Relay 81 Frequency Test 2026-10-24, created
  2. Relay 59 Overvoltage Test 2026-10-24, created
  3. Relay 51 Time Overcurrent Test 2026-10-24, created
  4. Relay 27 Undervoltage Test 2026-10-24, created
  5. Relay 25 Sync Check Test 2026-10-24, created
  6. Protective Relay Element Tests 2026-10-24, created
  7. IEEE Standard for Inverse-Time Characteristics Equations for Overcurrent Relays 2026-10-24, created
  8. Zone selective interlocking 2026-10-13, created

Full change log

What the records contain

Data records by kindEquipment: 76; Method: 76; Definition: 29; Scope: 16; Edition: 2Equipment76Method76Definition29Scope16Edition2
Data records by kind. Every statement on the site is one data record; this is the count of records per kind.
Data records by kind: records per row.
CategoryCount
Equipment76
Method76
Definition29
Scope16
Edition2

Cite this site

Every entry carries a cite block with plain, legal, BibTeX and Wikipedia formats and a permanent revision address. The cite page explains the conventions.

For machines

The same records are served as JSON through the read API and as tools through the MCP endpoint; llms.txt describes the site and the machine-use terms state the conditions.