{"schemaVersion":1,"slug":"tap-changer-raise-command-interface","name":"Tap-changer raise-command interface","kind":"symbol","abbreviation":"TRI","aliases":["Transformer regulation and cooling control","substations Transformer regulation and cooling control","substations","Substations","Regulator raise request","Tap-raise control output"],"category":"measurement-protection","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Carries a permitted request to move the tap changer in the documented voltage-raising direction.","description":["Carries a permitted request to move the tap changer in the documented voltage-raising direction. Transformer regulation changes the selected winding connection to influence voltage, while cooling control manages the installed fans and pumps. Commands, mechanical position and measured results belong to different parts of the diagram.","In a substation, a voltage regulator can request a tap change and check the resulting tap-position feedback. A separate controller stages cooling equipment according to the transformer manufacturer's defined conditions. For this reference, the drawing identifies “Regulator raise request” at the input and “Tap-raise control output” at the output. Raise direction depends on the documented winding arrangement.","Keep tap-change permission, limit contacts, movement indication and measured voltage distinct. Actual tap positions, time delays, cooling ratings and allowable parallel operation require the selected transformer control design. 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: Regulator raise request. Identify its source device or document and the state represented on the drawing.","Follow the named output: Tap-raise control output. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Raise direction depends on the documented winding arrangement.","Keep tap-change permission, limit contacts, movement indication and measured voltage distinct. Actual tap positions, time delays, cooling ratings and allowable parallel operation require the selected transformer control design."],"drawingChecklist":["Label the source and connection reference for regulator raise request.","Identify the destination and defined state of tap-raise control output.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Raise direction depends on the documented winding arrangement."],"distinction":"Raise direction depends on the documented winding arrangement. 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":"Substations"},{"label":"Input / boundary","value":"Regulator raise request"},{"label":"Output / connection","value":"Tap-raise control output"},{"label":"Lookup label","value":"TRI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-transformer-control","relevance":"Public technical context for transformer regulation and cooling control. Transformer temperature, cooling, tap changing and parallel operation. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["adjustable-ratio-transformer","winding-temperature-indicator","tap-changer-lower-command-interface"],"artwork":"pi26-tap-changer-raise-command-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"substations","family":"transformer-regulation","input":"Regulator raise request","output":"Tap-raise control output"},"plainEnglish":{"title":"What this block does","introduction":"Carries a permitted request to move the tap changer in the documented voltage-raising direction.","example":"In a substation, a voltage regulator can request a tap change and check the resulting tap-position feedback. A separate controller stages cooling equipment according to the transformer manufacturer's defined conditions. For this reference, the drawing identifies “Regulator raise request” at the input and “Tap-raise control output” at the output. Raise direction depends on the documented winding arrangement.","drawings":"Start at the named input: Regulator raise request. Identify its source device or document and the state represented on the drawing. Follow the named output: Tap-raise control output. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Regulator raise request"},{"name":"Output","meaning":"Tap-raise control output"},{"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":["Regulator raise request","TRI","Tap-raise control output"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"SEL-2414 transformer monitor","url":"https://selinc.com/products/2414/"}],"profileId":"power-installation-transformer-regulation"},"url":"https://eloragrid.ai/symbols/tap-changer-raise-command-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/tap-changer-raise-command-interface.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-transformer-control","publisher":"SEL","title":"SEL-2414 transformer monitor","url":"https://selinc.com/products/2414/","scope":"Transformer temperature, cooling, tap changing and parallel operation.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for transformer regulation and cooling control. Transformer temperature, cooling, tap changing and parallel operation. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}