{"schemaVersion":1,"slug":"neutral-earthing-resistor-continuity-supervision","name":"Neutral-earthing resistor continuity supervision","kind":"symbol","abbreviation":"NRCS","aliases":["Switchyard earthing and lightning interfaces","switchyards Switchyard earthing and lightning interfaces","switchyards","Switchyards","Resistor path supervision","Earthing-path fault indication"],"category":"power-distribution","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Reports the selected monitor's declared continuity condition for the assigned resistor path.","description":["Reports the selected monitor's declared continuity condition for the assigned resistor path. Earthing and lightning interfaces identify the connections between equipment metalwork, primary protection devices and the station earthing network. Their electrical purpose differs from their physical conductor route or electrode geometry.","In a switchyard arrangement, the earthing references help connect each primary equipment structure and surge-protection device to the correct earth-grid interface. Separate details show actual joints, sizes and installation routes. For this reference, the drawing identifies “Resistor path supervision” at the input and “Earthing-path fault indication” at the output. The monitor's scope must be stated.","Name every connected item and the earthing design reference. The illustrative connection does not establish touch or step voltages, conductor sizing, lightning coverage or safe working conditions. 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: Resistor path supervision. Identify its source device or document and the state represented on the drawing.","Follow the named output: Earthing-path fault indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","The monitor's scope must be stated.","Name every connected item and the earthing design reference. The illustrative connection does not establish touch or step voltages, conductor sizing, lightning coverage or safe working conditions."],"drawingChecklist":["Label the source and connection reference for resistor path supervision.","Identify the destination and defined state of earthing-path fault indication.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: The monitor's scope must be stated."],"distinction":"The monitor's scope must be stated. 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":"Resistor path supervision"},{"label":"Output / connection","value":"Earthing-path fault indication"},{"label":"Lookup label","value":"NRCS is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"s28-eig-earthing-connections","relevance":"Public technical context for switchyard earthing and lightning interfaces. Protective earthing, bonding and earth-electrode interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["iec-earth-electrode","lightning-down-conductor","cable-sheath-single-point-bonding-arrangement"],"artwork":"pi26-neutral-earthing-resistor-continuity-supervision","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchyards","family":"yard-earthing","input":"Resistor path supervision","output":"Earthing-path fault indication"},"plainEnglish":{"title":"What this block does","introduction":"Reports the selected monitor's declared continuity condition for the assigned resistor path.","example":"In a switchyard arrangement, the earthing references help connect each primary equipment structure and surge-protection device to the correct earth-grid interface. Separate details show actual joints, sizes and installation routes. For this reference, the drawing identifies “Resistor path supervision” at the input and “Earthing-path fault indication” at the output. The monitor's scope must be stated.","drawings":"Start at the named input: Resistor path supervision. Identify its source device or document and the state represented on the drawing. Follow the named output: Earthing-path fault indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Resistor path supervision"},{"name":"Output","meaning":"Earthing-path fault 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":["Resistor path supervision","NRCS","Earthing-path fault indication"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Earthing connections","url":"https://www.electrical-installation.org/enwiki/Earthing_connections"}],"profileId":"power-installation-yard-earthing"},"url":"https://eloragrid.ai/symbols/neutral-earthing-resistor-continuity-supervision","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/neutral-earthing-resistor-continuity-supervision.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"s28-eig-earthing-connections","title":"Earthing connections","publisher":"Schneider Electric, Electrical Installation Guide","url":"https://www.electrical-installation.org/enwiki/Earthing_connections","type":"manufacturer","scope":"Definitions of earth electrode, main earthing terminal, removable test link and bonding conductors in an installation earthing arrangement.","checkedOn":"2026-10-28","reuse":"link-only","relevance":"Public technical context for switchyard earthing and lightning interfaces. Protective earthing, bonding and earth-electrode interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}