{"schemaVersion":1,"slug":"22-equalizer-circuit-breaker","name":"Equalizer circuit breaker","kind":"function","abbreviation":"22","aliases":["equalizer breaker","equalising breaker","ANSI 22","IEEE device 22"],"category":"measurement-protection","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEEE / ANSI"],"summary":"Switches an equalising connection used in a machine or generator arrangement.","description":["Switches an equalising connection used in a machine or generator arrangement.","In a drafting package, connect this reference to the equaliser conductors and connected machines. The associated drawing should trace the breaker operating and interlocking circuits; the number identifies the role and does not specify the terminal arrangement, ratings or operating settings.","This designation is useful when reading machine and legacy control drawings. Retain the documented function on an existing drawing and consult the original equipment manual before assigning it to a new design."],"readingNotes":["Identify the equaliser conductors and connected machines.","Trace the breaker operating and interlocking circuits."],"drawingChecklist":["Label the equaliser conductors and connected machines.","Cross-reference the breaker operating and interlocking circuits.","Identify the device tag, manual revision and logic drawing that define this implementation."],"distinction":"The equalising connection has a specific system purpose; do not infer a bus-coupler application solely from the number.","facts":[{"label":"ANSI / IEEE function number","value":"22"},{"label":"Drawing context","value":"The equaliser conductors and connected machines"},{"label":"Application scope","value":"Specialist or legacy machine-control use; interpret with the equipment legend."}],"references":[{"sourceId":"pub-function-sel-numbers","relevance":"Public manufacturer number/name association. Drafting explanations are independently written."},{"sourceId":"ieee-functions","relevance":"Normative device-number publication; exact edition wording and compliance require the licensed standard."}],"related":["circuit-breaker","52-ac-circuit-breaker"],"artwork":"pub-function-box","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/protection-functions/22-equalizer-circuit-breaker","illustration":{"url":"https://eloragrid.ai/library/illustrations/22-equalizer-circuit-breaker.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-function-sel-numbers","title":"ANSI device-number and suffix reference table","publisher":"Schweitzer Engineering Laboratories","url":"https://selinc.com/pt/products/tables/ansi/","type":"manufacturer","scope":"Public Portuguese-language base-number and application-suffix table. Used to cross-check public number associations. Application-specific and historical labels need the selected drawing legend; this table is not a substitute for the licensed IEEE standard.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public manufacturer number/name association. Drafting explanations are independently written."},{"id":"ieee-functions","title":"IEEE C37.2-2022: power-system device function numbers","publisher":"IEEE","url":"https://ieeexplore.ieee.org/document/9984140","type":"standard","scope":"Device function numbers, acronyms and contact designations. The full publication may require access through IEEE.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Normative device-number publication; exact edition wording and compliance require the licensed standard."}]}