Changes

Last reviewed 2026-10-26

About this log

This page lists changes to the site in date order: pages published, substantive revisions, corrections, and datums superseded by new versions. Each entry links to the affected page or datum and, for a revised page, to the revision it produced.

Typographical fixes that change no fact are recorded only in the change log of the page concerned. Corrections made in response to reports are also listed in the corrections log.

Change log

Recorded changes per month. Every change to a data record or an article, counted by the month it was recorded.

Recorded changes per month: recorded changes per month.
Month	Changes
Oct 2026	272

The 200 most recent of 272 recorded changes, newest first.
Date	Type	Entry	Change
2026-10-24	datum	tests.relay-81-frequency-test.ieee2800.rocof-protection	created
2026-10-24	datum	tests.relay-81-frequency-test.ieee2800.rocof-protection	revised
2026-10-24	datum	tests.relay-81-frequency-test.ieee2800.rocof-protection	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-81-frequency-test.ieee2800.frequency-protection	created
2026-10-24	datum	tests.relay-81-frequency-test.ieee2800.frequency-protection	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547.trip-requirements	created
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547.trip-requirements	revised
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547.trip-requirements	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547-1.type-test-requirements	created
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547-1.type-test-requirements	revised
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547-1.type-test-requirements	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547-1.type-test	created
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547-1.type-test	revised
2026-10-24	datum	tests.relay-81-frequency-test.ieee1547-1.type-test	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee2800.filtered-quantities	created
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee2800.filtered-quantities	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee1547.trip-requirements	created
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee1547.trip-requirements	revised
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee1547.trip-requirements	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee1547-1.type-test	created
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee1547-1.type-test	revised
2026-10-24	datum	tests.relay-59-overvoltage-test.ieee1547-1.type-test	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.reset-check	created
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.reset-check	revised
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.reset-check	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.induction-relay-curves	created
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.induction-relay-curves	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.expected-time	created
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.expected-time	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.conformance-check	created
2026-10-24	datum	tests.relay-51-time-overcurrent-test.ieeec37-112.conformance-check	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee2800.no-mandatory-settings	created
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee2800.no-mandatory-settings	revised
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee2800.no-mandatory-settings	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547.trip-requirements	created
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547.trip-requirements	revised
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547.trip-requirements	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547-1.type-test-criterion	created
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547-1.type-test-criterion	revised
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547-1.type-test-criterion	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547-1.type-test	created
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547-1.type-test	revised
2026-10-24	datum	tests.relay-27-undervoltage-test.ieee1547-1.type-test	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.relay-25-sync-check-test.ieee1547.synchronization	created
2026-10-24	datum	tests.relay-25-sync-check-test.ieee1547.synchronization	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.production-trip-test	created
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.production-trip-test	revised
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.production-trip-test	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.poc-unit-verification	created
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.poc-unit-verification	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-verification	created
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-verification	revised
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-verification	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-trip-test	created
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-trip-test	revised
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-trip-test	review_status unreviewed -> software_reviewed
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-criteria	created
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-criteria	revised
2026-10-24	datum	tests.protective-relay-element-tests.ieee1547-1.commissioning-criteria	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.title	created
2026-10-24	datum	std.ieee-c37-112.title	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.time-dial-scaling	created
2026-10-24	datum	std.ieee-c37-112.time-dial-scaling	revised
2026-10-24	datum	std.ieee-c37-112.time-dial-scaling	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.structure.equations	created
2026-10-24	datum	std.ieee-c37-112.structure.equations	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.structure.definitions	created
2026-10-24	datum	std.ieee-c37-112.structure.definitions	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.structure.annex-a	created
2026-10-24	datum	std.ieee-c37-112.structure.annex-a	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.sponsor	created
2026-10-24	datum	std.ieee-c37-112.sponsor	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.scope	created
2026-10-24	datum	std.ieee-c37-112.scope	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.revision-of	created
2026-10-24	datum	std.ieee-c37-112.revision-of	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.rationale.fuse-coordination	created
2026-10-24	datum	std.ieee-c37-112.rationale.fuse-coordination	revised
2026-10-24	datum	std.ieee-c37-112.rationale.fuse-coordination	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.iec-relationship	created
2026-10-24	datum	std.ieee-c37-112.iec-relationship	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.equation.reset-form	created
2026-10-24	datum	std.ieee-c37-112.equation.reset-form	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.equation.operate-form	created
2026-10-24	datum	std.ieee-c37-112.equation.operate-form	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.equation.dynamic-form	created
2026-10-24	datum	std.ieee-c37-112.equation.dynamic-form	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.dynamic-conformance	created
2026-10-24	datum	std.ieee-c37-112.dynamic-conformance	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.designation	created
2026-10-24	datum	std.ieee-c37-112.designation	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.definition.time-dial	created
2026-10-24	datum	std.ieee-c37-112.definition.time-dial	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.curve-families	created
2026-10-24	datum	std.ieee-c37-112.curve-families	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.constants-basis	created
2026-10-24	datum	std.ieee-c37-112.constants-basis	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.conformance-bands	created
2026-10-24	datum	std.ieee-c37-112.conformance-bands	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.bands-not-tolerance	created
2026-10-24	datum	std.ieee-c37-112.bands-not-tolerance	review_status unreviewed -> software_reviewed
2026-10-24	datum	std.ieee-c37-112.approved	created
2026-10-24	datum	std.ieee-c37-112.approved	revised
2026-10-24	datum	std.ieee-c37-112.approved	review_status unreviewed -> software_reviewed
2026-10-13	datum	tests.zone-selective-interlocking.equipment.relay.maintenance	created
2026-10-13	datum	tests.zone-selective-interlocking.equipment.relay.acceptance	created
2026-10-13	datum	tests.visual-and-mechanical-inspection.equipment.relay.maintenance	created
2026-10-13	datum	tests.visual-and-mechanical-inspection.equipment.relay.acceptance	created
2026-10-13	datum	tests.scada-and-communication-verification.equipment.relay.maintenance	created
2026-10-13	datum	tests.scada-and-communication-verification.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-87-differential-test.title	created
2026-10-13	datum	tests.relay-87-differential-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-87-differential-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-87-differential-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-87-differential-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-85-pilot-wire-monitor-test.title	created
2026-10-13	datum	tests.relay-85-pilot-wire-monitor-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-85-pilot-wire-monitor-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-85-pilot-wire-monitor-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-85-pilot-wire-monitor-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-81-frequency-test.title	created
2026-10-13	datum	tests.relay-81-frequency-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-81-frequency-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-81-frequency-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-81-frequency-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-79-reclosing-test.title	created
2026-10-13	datum	tests.relay-79-reclosing-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-79-reclosing-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-79-reclosing-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-79-reclosing-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-67-directional-overcurrent-test.title	created
2026-10-13	datum	tests.relay-67-directional-overcurrent-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-67-directional-overcurrent-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-67-directional-overcurrent-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-67-directional-overcurrent-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-64-ground-detector-test.title	created
2026-10-13	datum	tests.relay-64-ground-detector-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-64-ground-detector-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-64-ground-detector-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-64-ground-detector-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-63-sudden-pressure-test.title	created
2026-10-13	datum	tests.relay-63-sudden-pressure-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-63-sudden-pressure-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-63-sudden-pressure-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-63-sudden-pressure-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-60-voltage-balance-test.title	created
2026-10-13	datum	tests.relay-60-voltage-balance-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-60-voltage-balance-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-60-voltage-balance-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-60-voltage-balance-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-59-overvoltage-test.title	created
2026-10-13	datum	tests.relay-59-overvoltage-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-59-overvoltage-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-59-overvoltage-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-59-overvoltage-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-55-power-factor-test.title	created
2026-10-13	datum	tests.relay-55-power-factor-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-55-power-factor-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-55-power-factor-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-55-power-factor-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-51-time-overcurrent-test.title	created
2026-10-13	datum	tests.relay-51-time-overcurrent-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-51-time-overcurrent-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-51-time-overcurrent-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-51-time-overcurrent-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-50bf-breaker-failure-test.title	created
2026-10-13	datum	tests.relay-50bf-breaker-failure-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-50bf-breaker-failure-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-50bf-breaker-failure-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-50bf-breaker-failure-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-50-instantaneous-overcurrent-test.title	created
2026-10-13	datum	tests.relay-50-instantaneous-overcurrent-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-50-instantaneous-overcurrent-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-50-instantaneous-overcurrent-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-50-instantaneous-overcurrent-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-49t-temperature-test.title	created
2026-10-13	datum	tests.relay-49t-temperature-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-49t-temperature-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-49t-temperature-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-49t-temperature-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-49r-thermal-replica-test.title	created
2026-10-13	datum	tests.relay-49r-thermal-replica-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-49r-thermal-replica-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-49r-thermal-replica-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-49r-thermal-replica-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-47-phase-sequence-test.title	created
2026-10-13	datum	tests.relay-47-phase-sequence-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-47-phase-sequence-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-47-phase-sequence-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-47-phase-sequence-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-46n-negative-sequence-test.title	created
2026-10-13	datum	tests.relay-46n-negative-sequence-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-46n-negative-sequence-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-46n-negative-sequence-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-46n-negative-sequence-test.equipment.relay.acceptance	created
2026-10-13	datum	tests.relay-46-current-balance-test.title	created
2026-10-13	datum	tests.relay-46-current-balance-test.governed-by.ansi-neta-mts	created
2026-10-13	datum	tests.relay-46-current-balance-test.governed-by.ansi-neta-ats	created
2026-10-13	datum	tests.relay-46-current-balance-test.equipment.relay.maintenance	created
2026-10-13	datum	tests.relay-46-current-balance-test.equipment.relay.acceptance	created