{"schemaVersion":1,"slug":"relay-test-switch-auxiliary-indication","name":"Relay test-switch auxiliary indication","kind":"symbol","abbreviation":"RTAI","aliases":["Switchgear test and commissioning interfaces","switchgear Switchgear test and commissioning interfaces","switchgear","Switchgear","Test-switch auxiliary contact","Test-switch status"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Carries the position of a test switch into the alarm or control logic.","description":["Carries the position of a test switch into the alarm or control logic. A test interface separates measurement, command and indication paths so their behavior can be checked in the documented test configuration. The test boundary must show which real equipment outputs remain enabled.","In a switchgear relay panel, test links can separate a protective relay from the trip coils while maintaining the specified current-transformer secondary arrangement. For this reference, the drawing identifies “Test-switch auxiliary contact” at the input and “Test-switch status” at the output. Auxiliary status follows the selected test assembly.","Trace the source and destination on each side of the test boundary. Use the selected test-device instructions for actual operations and never infer a safe current-transformer switching sequence from an educational diagram. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation."],"readingNotes":["Start at the named input: Test-switch auxiliary contact. Identify its source device or document and the state represented on the drawing.","Follow the named output: Test-switch status. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Auxiliary status follows the selected test assembly.","Trace the source and destination on each side of the test boundary. Use the selected test-device instructions for actual operations and never infer a safe current-transformer switching sequence from an educational diagram."],"drawingChecklist":["Label the source and connection reference for test-switch auxiliary contact.","Identify the destination and defined state of test-switch status.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Auxiliary status follows the selected test assembly."],"distinction":"Auxiliary status follows the selected test assembly. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.","facts":[{"label":"Representation","value":"Functional block"},{"label":"Installation focus","value":"Switchgear"},{"label":"Input / boundary","value":"Test-switch auxiliary contact"},{"label":"Output / connection","value":"Test-switch status"},{"label":"Lookup label","value":"RTAI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-masterclad","relevance":"Public technical context for switchgear test and commissioning interfaces. Breaker control, mechanism, position contacts, racking interlocks and test interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["relay-test-block","test-plug","commissioning-handover-inhibit-interface"],"artwork":"pi26-relay-test-switch-auxiliary-indication","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchgear","family":"testing","input":"Test-switch auxiliary contact","output":"Test-switch status"},"plainEnglish":{"title":"What this block does","introduction":"Carries the position of a test switch into the alarm or control logic.","example":"In a switchgear relay panel, test links can separate a protective relay from the trip coils while maintaining the specified current-transformer secondary arrangement. For this reference, the drawing identifies “Test-switch auxiliary contact” at the input and “Test-switch status” at the output. Auxiliary status follows the selected test assembly.","drawings":"Start at the named input: Test-switch auxiliary contact. Identify its source device or document and the state represented on the drawing. Follow the named output: Test-switch status. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Test-switch auxiliary contact"},{"name":"Output","meaning":"Test-switch status"},{"name":"Application reference","meaning":"An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections."}],"diagram":"flow","steps":["Test-switch auxiliary contact","RTAI","Test-switch status"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Masterclad medium-voltage switchgear: circuit-breaker section interlocks","url":"https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7"}],"profileId":"power-installation-testing"},"url":"https://eloragrid.ai/symbols/relay-test-switch-auxiliary-indication","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/relay-test-switch-auxiliary-indication.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-masterclad","publisher":"Schneider Electric","title":"Masterclad medium-voltage switchgear: circuit-breaker section interlocks","url":"https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7","scope":"Breaker control, mechanism, position contacts, racking interlocks and test interfaces.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for switchgear test and commissioning interfaces. Breaker control, mechanism, position contacts, racking interlocks and test interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}