{"schemaVersion":1,"slug":"stored-energy-discharged-indication","name":"Stored-energy discharged indication","kind":"symbol","abbreviation":"SDI","aliases":["Stored-energy mechanism supervision","switchgear Stored-energy mechanism supervision","switchgear","Switchgear","Discharged-position contact","Stored-energy state"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Reports the mechanism's documented discharged condition for control or maintenance indication.","description":["Reports the mechanism's documented discharged condition for control or maintenance indication. A stored-energy breaker mechanism has charging, release, indication and supervision functions. Motor supply, stored spring energy and the ability to complete an opening operation are separate drawing concerns.","In a switchgear panel, a charging motor replenishes the mechanism after an operation. Supervisory contacts let the controller report an incomplete charge or repeated charging demand before an operator requests another operation. For this reference, the drawing identifies “Discharged-position contact” at the input and “Stored-energy state” at the output. This signal does not establish all stored energy is absent.","Show the individual contacts and the relevant motor or release circuit. Supply voltage, charging time, operating duty and permissible alarms must follow the chosen mechanism documentation. 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: Discharged-position contact. Identify its source device or document and the state represented on the drawing.","Follow the named output: Stored-energy state. Cross-reference its destination and separate the command from confirmation that the equipment responded.","This signal does not establish all stored energy is absent.","Show the individual contacts and the relevant motor or release circuit. Supply voltage, charging time, operating duty and permissible alarms must follow the chosen mechanism documentation."],"drawingChecklist":["Label the source and connection reference for discharged-position contact.","Identify the destination and defined state of stored-energy state.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: This signal does not establish all stored energy is absent."],"distinction":"This signal does not establish all stored energy is absent. 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":"Discharged-position contact"},{"label":"Output / connection","value":"Stored-energy state"},{"label":"Lookup label","value":"SDI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-masterclad","relevance":"Public technical context for stored-energy mechanism supervision. 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":["circuit-breaker","motor","manual-spring-charging-indication"],"artwork":"pi26-stored-energy-discharged-indication","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchgear","family":"mechanism","input":"Discharged-position contact","output":"Stored-energy state"},"plainEnglish":{"title":"What this block does","introduction":"Reports the mechanism's documented discharged condition for control or maintenance indication.","example":"In a switchgear panel, a charging motor replenishes the mechanism after an operation. Supervisory contacts let the controller report an incomplete charge or repeated charging demand before an operator requests another operation. For this reference, the drawing identifies “Discharged-position contact” at the input and “Stored-energy state” at the output. This signal does not establish all stored energy is absent.","drawings":"Start at the named input: Discharged-position contact. Identify its source device or document and the state represented on the drawing. Follow the named output: Stored-energy state. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Discharged-position contact"},{"name":"Output","meaning":"Stored-energy state"},{"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":["Discharged-position contact","SDI","Stored-energy state"],"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-mechanism"},"url":"https://eloragrid.ai/symbols/stored-energy-discharged-indication","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/stored-energy-discharged-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 stored-energy mechanism supervision. 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."}]}