{"schemaVersion":1,"slug":"station-battery-high-voltage-alarm-block","name":"Station battery high-voltage alarm block","kind":"symbol","abbreviation":"SBHAB","aliases":["Station battery and charger distribution","substations Station battery and charger distribution","substations","Substations","Battery-bus voltage","High-voltage alarm state"],"category":"measurement-protection","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Applies the documented high-voltage supervision to the station DC bus.","description":["Applies the documented high-voltage supervision to the station DC bus. A station battery system supplies protection, control and other assigned DC loads through a documented charger and distribution arrangement. Charger output, battery contribution and load distribution are related but separately monitored paths.","In a substation control building, the battery can support breaker trip circuits while the charger AC supply is unavailable. Supervision must identify whether the charger, battery or a downstream feeder is affected. For this reference, the drawing identifies “Battery-bus voltage” at the input and “High-voltage alarm state” at the output. Connected load limits influence the selected threshold.","Identify every source, protective device, isolation boundary and return. Battery capacity, DC fault duty, charging settings and ventilation require the selected battery-system design; illustrative circuits do not establish autonomy. 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: Battery-bus voltage. Identify its source device or document and the state represented on the drawing.","Follow the named output: High-voltage alarm state. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Connected load limits influence the selected threshold.","Identify every source, protective device, isolation boundary and return. Battery capacity, DC fault duty, charging settings and ventilation require the selected battery-system design; illustrative circuits do not establish autonomy."],"drawingChecklist":["Label the source and connection reference for battery-bus voltage.","Identify the destination and defined state of high-voltage alarm state.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Connected load limits influence the selected threshold."],"distinction":"Connected load limits influence the selected threshold. 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":"Battery-bus voltage"},{"label":"Output / connection","value":"High-voltage alarm state"},{"label":"Lookup label","value":"SBHAB is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-station-dc","relevance":"Public technical context for station battery and charger distribution. Battery charging modes, DC distribution interfaces and charger alarms. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["ga-station-dc-battery-rack","ga-battery-charger","station-battery-continuity-supervision"],"artwork":"pi26-station-battery-high-voltage-alarm-block","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"substations","family":"station-battery","input":"Battery-bus voltage","output":"High-voltage alarm state"},"plainEnglish":{"title":"What this block does","introduction":"Applies the documented high-voltage supervision to the station DC bus.","example":"In a substation control building, the battery can support breaker trip circuits while the charger AC supply is unavailable. Supervision must identify whether the charger, battery or a downstream feeder is affected. For this reference, the drawing identifies “Battery-bus voltage” at the input and “High-voltage alarm state” at the output. Connected load limits influence the selected threshold.","drawings":"Start at the named input: Battery-bus voltage. Identify its source device or document and the state represented on the drawing. Follow the named output: High-voltage alarm state. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Battery-bus voltage"},{"name":"Output","meaning":"High-voltage alarm 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":["Battery-bus voltage","SBHAB","High-voltage alarm state"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"MicroGenius S2/S4 battery charger technical manual","url":"https://www.sens-usa.com/hubfs/Controlled%20Files/Manuals/101330_MGS_User_Manual.pdf"}],"profileId":"power-installation-station-battery"},"url":"https://eloragrid.ai/symbols/station-battery-high-voltage-alarm-block","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/station-battery-high-voltage-alarm-block.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-station-dc","publisher":"SENS","title":"MicroGenius S2/S4 battery charger technical manual","url":"https://www.sens-usa.com/hubfs/Controlled%20Files/Manuals/101330_MGS_User_Manual.pdf","scope":"Battery charging modes, DC distribution interfaces and charger alarms.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for station battery and charger distribution. Battery charging modes, DC distribution interfaces and charger alarms. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}