Data record `tests.relay-81-frequency-test.ieee1547-1.type-test`

Verified 2026-10-24 Confidence: Medium

The overfrequency and underfrequency trip type tests in clauses 5.5.1 and 5.5.2 of IEEE 1547.1-2020 use the rate-limited step of Annex A.4 with frequency as the parameter under test: other control functions are disabled or set so as not to interfere, frequency droop is set to its widest deadband and maximum droop, the magnitude and duration settings start at the minimum of the adjustable range, the source is moved to a starting point and held, then stepped past the set point and held, and the trip frequency and clearing time are recorded, with repeats at the maximum magnitude, at the maximum duration and for each trip region.

Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.

Provenance: the chain from source to entry.
Step	Item	Detail
Source	IEEE 1547.1-2020	Licensed standard, clause 5.5.1, 5.5.2
Data record	tests.relay-81-frequency-test.ieee1547-1.type-test	Verified 2026-10-24
Entry	Relay 81 Frequency Test	No revisions

Subject: Relay 81 Frequency Test (Test methods)
Kind: Method fact
Source: IEEE 1547.1-2020, clause 5.5.1, 5.5.2, Conformance Test Procedures for Equipment Interconnecting Distributed Energy Resources, IEEE.

History

Every recorded change to this data record, oldest first.
Date	Change
2026-10-24	created
2026-10-24	revised
2026-10-24	review_status unreviewed -> software_reviewed

Cite this page

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

"Data record tests.relay-81-frequency-test.ieee1547-1.type-test." Protective Relay Reference. 2026-10-24. https://www.protectiverelayreference.com/data/tests.relay-81-frequency-test.ieee1547-1.type-test/.

Protective Relay Reference, Data record tests.relay-81-frequency-test.ieee1547-1.type-test (Oct. 24, 2026), https://www.protectiverelayreference.com/data/tests.relay-81-frequency-test.ieee1547-1.type-test/.

@misc{etr-data-tests-relay-81-frequency-test-ieee1547-1-type-test,
  title = {Data record tests.relay-81-frequency-test.ieee1547-1.type-test},
  howpublished = {\url{https://www.protectiverelayreference.com/data/tests.relay-81-frequency-test.ieee1547-1.type-test/}},
  organization = {Protective Relay Reference},
  publisher = {Protective Relay Reference},
  year = {2026},
  note = {last substantive change 2026-10-24}
}

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