{"schemaVersion":1,"slug":"manual-spring-charging-indication","name":"Manual spring-charging indication","kind":"symbol","abbreviation":"MSI","aliases":["Stored-energy mechanism supervision","switchgear Stored-energy mechanism supervision","switchgear","Switchgear","Manual charging feedback","Manual-charge indication"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Identifies the mechanically initiated charging state where the selected mechanism provides feedback.","description":["Identifies the mechanically initiated charging state where the selected mechanism provides feedback. 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 “Manual charging feedback” at the input and “Manual-charge indication” at the output. Feedback availability depends on the mechanism.","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: Manual charging feedback. Identify its source device or document and the state represented on the drawing.","Follow the named output: Manual-charge indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Feedback availability depends on the mechanism.","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 manual charging feedback.","Identify the destination and defined state of manual-charge indication.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Feedback availability depends on the mechanism."],"distinction":"Feedback availability depends on the mechanism. 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":"Manual charging feedback"},{"label":"Output / connection","value":"Manual-charge indication"},{"label":"Lookup label","value":"MSI 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","hydraulic-operating-pressure-supervision"],"artwork":"pi26-manual-spring-charging-indication","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchgear","family":"mechanism","input":"Manual charging feedback","output":"Manual-charge indication"},"plainEnglish":{"title":"What this block does","introduction":"Identifies the mechanically initiated charging state where the selected mechanism provides feedback.","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 “Manual charging feedback” at the input and “Manual-charge indication” at the output. Feedback availability depends on the mechanism.","drawings":"Start at the named input: Manual charging feedback. Identify its source device or document and the state represented on the drawing. Follow the named output: Manual-charge indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Manual charging feedback"},{"name":"Output","meaning":"Manual-charge indication"},{"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":["Manual charging feedback","MSI","Manual-charge indication"],"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/manual-spring-charging-indication","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/manual-spring-charging-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."}]}