{"schemaVersion":1,"slug":"gis-pressure-relief-operated-interface","name":"GIS pressure-relief operated interface","kind":"symbol","abbreviation":"GPOI","aliases":["Switchyard equipment condition interfaces","switchyards Switchyard equipment condition interfaces","switchyards","Switchyards","Relief-device operation contact","Compartment relief indication"],"category":"power-distribution","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Receives the assigned compartment pressure-relief device status at station supervision.","description":["Receives the assigned compartment pressure-relief device status at station supervision. 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 “Relief-device operation contact” at the input and “Compartment relief indication” at the output. The output does not define an access procedure.","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: Relief-device operation contact. Identify its source device or document and the state represented on the drawing.","Follow the named output: Compartment relief indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","The output does not define an access procedure.","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 relief-device operation contact.","Identify the destination and defined state of compartment relief indication.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: The output does not define an access procedure."],"distinction":"The output does not define an access procedure. 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":"Relief-device operation contact"},{"label":"Output / connection","value":"Compartment relief indication"},{"label":"Lookup label","value":"GPOI 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-partial-discharge-monitor-interface"],"artwork":"pi26-gis-pressure-relief-operated-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchyards","family":"yard-auxiliaries","input":"Relief-device operation contact","output":"Compartment relief indication"},"plainEnglish":{"title":"What this block does","introduction":"Receives the assigned compartment pressure-relief device status at station supervision.","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 “Relief-device operation contact” at the input and “Compartment relief indication” at the output. The output does not define an access procedure.","drawings":"Start at the named input: Relief-device operation contact. Identify its source device or document and the state represented on the drawing. Follow the named output: Compartment relief indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Relief-device operation contact"},{"name":"Output","meaning":"Compartment relief 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":["Relief-device operation contact","GPOI","Compartment relief indication"],"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-pressure-relief-operated-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/gis-pressure-relief-operated-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."}]}