Test Instrument Reference

Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence

Updated 2026-10-27

Edition timelineElectrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence: 2019 (current)20172018201920202021Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequenceIEC 61557-7:2019Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence2019 (current edition)
Edition timeline. Editions recorded for this standard from the publisher's catalog. The filled dot marks the edition listed as current.
Edition timeline: edition years from the publishers' catalogs; editions without a four-digit year are listed but not plotted.
StandardEditionKindCurrentRecord
Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence2019EditionYesstd.iec-61557-7.published
Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence2019Revision ofstd.iec-61557-7.revision-of

Data records

  • IEC 61557-7:2019 was prepared by IEC technical committee TC 85, Measuring equipment for electrical and electromagnetic quantities, and the catalog files it under the category Safety. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.committee
  • IEC 61557-7:2019 is the designation of the third edition of Part 7 of the IEC 61557 series, the part on phase sequence. Value: IEC 61557-7:2019. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.designation
  • IEC 61557-7:2019 was published by the IEC on 2019-07-26 as the third edition of the part. Value: 2019. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.published
  • The IEC catalog lists IEC 61557-1:2019 among the normative references of IEC 61557-7:2019, so the phase sequence part is applied together with the general requirements of Part 1 of the series. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.relationship
  • IEC 61557-7:2019 cancels and replaces the second edition of 2007 and is described by the publisher as a technical revision. Its listed changes cover alignment of the structure with the rest of the IEC 61557 series, requirements updated to the newer editions of IEC 61010-1 and IEC 61010-031, extended information on markings, operating instructions and the testing of leads, test leads for insulated conductors, and a new annex on phase sequence tests and indications. Value: 2019. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.revision-of
  • IEC 61557-7:2019 states the requirements for measuring equipment that tests the phase sequence in three-phase distribution systems, where the indication may be mechanical, visual or audible. The document does not apply to additional measurements of other quantities and does not apply to monitoring relays. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.scope
  • The IEC catalog lists IEC 61557-7:2019 as valid with a stability date of 2028 and marks both earlier editions as revised. It also records an amendment 1 published in August 2023 together with a consolidated version that incorporates it. Value: current, stability date 2028. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.status
  • The publisher catalog gives the full title of IEC 61557-7:2019 as Electrical safety in low voltage distribution systems up to ... - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence, where the ellipsis stands for the AC and DC voltage limits printed in the title. Value: Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence. Source: IEC 61557-7:2019. Verified 2026-10-27. Record std.iec-61557-7.title

Sources

  • IEC 61557-7:2019, Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence, 2019 edition, IEC. Held as: Public page. Publisher page for IEC 61557-7:2019

Obtaining the documents

Changelog (18 entries)
DateRevisionChange
2026-10-27created (std.iec-61557-7.committee)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.committee)
2026-10-27created (std.iec-61557-7.designation)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.designation)
2026-10-27created (std.iec-61557-7.published)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.published)
2026-10-27created (std.iec-61557-7.relationship)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.relationship)
2026-10-27created (std.iec-61557-7.revision-of)
2026-10-27revised (std.iec-61557-7.revision-of)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.revision-of)
2026-10-27created (std.iec-61557-7.scope)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.scope)
2026-10-27created (std.iec-61557-7.status)
2026-10-27revised (std.iec-61557-7.status)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.status)
2026-10-27created (std.iec-61557-7.title)
2026-10-27review_status unreviewed -> software_reviewed (std.iec-61557-7.title)

Cite this page

Cite the governing standard for the fact itself; cite this page as the finding aid.

"Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/standards/iec-61557-7/.