{"schemaVersion":1,"slug":"gis-gas-density-lockout-interface","name":"GIS gas-density lockout interface","kind":"symbol","abbreviation":"GGLI","aliases":["Switchyard equipment condition interfaces","switchyards Switchyard equipment condition interfaces","switchyards","Switchyards","Gas-condition lockout contact","Assigned operation block"],"category":"power-distribution","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Receives the manufacturer's assigned gas-condition blocking output for the documented operation.","description":["Receives the manufacturer's assigned gas-condition blocking output for the documented operation. Yard equipment supervision carries the condition and support-system information of primary equipment into station alarms. A monitor's declared alarm, measurement and self-fault output need separate point names.","In a switchyard marshalling kiosk, gas compartment, operating mechanism and cabinet-service indications are collected for the station controller. Their equipment tags identify the actual compartment or mechanism being monitored. For this reference, the drawing identifies “Gas-condition lockout contact” at the input and “Assigned operation block” at the output. Different operations can have different blocking rules.","Keep primary-device identity, compartment boundaries and monitor health visible. A monitoring illustration does not establish a leak rate, operating threshold or remaining equipment life. 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: Gas-condition lockout contact. Identify its source device or document and the state represented on the drawing.","Follow the named output: Assigned operation block. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Different operations can have different blocking rules.","Keep primary-device identity, compartment boundaries and monitor health visible. A monitoring illustration does not establish a leak rate, operating threshold or remaining equipment life."],"drawingChecklist":["Label the source and connection reference for gas-condition lockout contact.","Identify the destination and defined state of assigned operation block.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Different operations can have different blocking rules."],"distinction":"Different operations can have different blocking rules. 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":"Switchyards"},{"label":"Input / boundary","value":"Gas-condition lockout contact"},{"label":"Output / connection","value":"Assigned operation block"},{"label":"Lookup label","value":"GGLI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-gis-monitoring","relevance":"Public technical context for switchyard equipment condition interfaces. Gas, operating mechanism and circuit-breaker condition monitoring. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["partial-discharge-sensor","ga-substation-rtu","gis-compartment-gas-zone-identification"],"artwork":"pi26-gis-gas-density-lockout-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchyards","family":"yard-auxiliaries","input":"Gas-condition lockout contact","output":"Assigned operation block"},"plainEnglish":{"title":"What this block does","introduction":"Receives the manufacturer's assigned gas-condition blocking output for the documented operation.","example":"In a switchyard marshalling kiosk, gas compartment, operating mechanism and cabinet-service indications are collected for the station controller. Their equipment tags identify the actual compartment or mechanism being monitored. For this reference, the drawing identifies “Gas-condition lockout contact” at the input and “Assigned operation block” at the output. Different operations can have different blocking rules.","drawings":"Start at the named input: Gas-condition lockout contact. Identify its source device or document and the state represented on the drawing. Follow the named output: Assigned operation block. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Gas-condition lockout contact"},{"name":"Output","meaning":"Assigned operation block"},{"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":["Gas-condition lockout contact","GGLI","Assigned operation block"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Modular switchgear monitoring","url":"https://www.hitachienergy.com/in/en/products-and-solutions/high-voltage-switchgear-and-breakers/monitoring-and-controlled-switching/modular-switchgear-monitoring-msm"}],"profileId":"power-installation-yard-auxiliaries"},"url":"https://eloragrid.ai/symbols/gis-gas-density-lockout-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/gis-gas-density-lockout-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-gis-monitoring","publisher":"Hitachi Energy","title":"Modular switchgear monitoring","url":"https://www.hitachienergy.com/in/en/products-and-solutions/high-voltage-switchgear-and-breakers/monitoring-and-controlled-switching/modular-switchgear-monitoring-msm","scope":"Gas, operating mechanism and circuit-breaker condition monitoring.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for switchyard equipment condition interfaces. Gas, operating mechanism and circuit-breaker condition monitoring. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}