Data record `std.ieee-c37-112.scope`

Verified 2026-10-24 Confidence: Medium

IEEE C37.112-2018 supplies analytic equations for the typical inverse-time overcurrent characteristic shapes so that microprocessor and computer based relays can reproduce the curves of induction-disk relays and coordinate with them. The document covers the equation forms, the constants of three standard characteristics and the conformance criteria for a relay that claims one of those characteristics.

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 C37.112-2018	Licensed standard, clause 1.1, 1.2
Data record	std.ieee-c37-112.scope	Verified 2026-10-24
Entry	IEEE Standard for Inverse-Time Characteristics Equations for Overcurrent Relays	No revisions

Subject: IEEE Standard for Inverse-Time Characteristics Equations for Overcurrent Relays (Standards)
Kind: Standard scope
Source: IEEE C37.112-2018, clause 1.1, 1.2, IEEE Standard for Inverse-Time Characteristics Equations for Overcurrent Relays, IEEE.

History

Every recorded change to this data record, oldest first.
Date	Change
2026-10-24	created
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 std.ieee-c37-112.scope." Protective Relay Reference. 2026-10-24. https://www.protectiverelayreference.com/data/std.ieee-c37-112.scope/.

Protective Relay Reference, Data record std.ieee-c37-112.scope (Oct. 24, 2026), https://www.protectiverelayreference.com/data/std.ieee-c37-112.scope/.

@misc{etr-data-std-ieee-c37-112-scope,
  title = {Data record std.ieee-c37-112.scope},
  howpublished = {\url{https://www.protectiverelayreference.com/data/std.ieee-c37-112.scope/}},
  organization = {Protective Relay Reference},
  publisher = {Protective Relay Reference},
  year = {2026},
  note = {last substantive change 2026-10-24}
}

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