{"schemaVersion":1,"slug":"series-reactor-primary-path-reference","name":"Series-reactor primary path reference","kind":"symbol","abbreviation":"SPPR","aliases":["High-voltage primary equipment references","switchyards High-voltage primary equipment references","switchyards","Switchyards","Incoming primary current","Series-reactor outgoing path"],"category":"power-distribution","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Identifies the reactor inserted in the assigned main power-current path.","description":["Identifies the reactor inserted in the assigned main power-current path. High-voltage primary equipment carries, interrupts, measures or conditions the main power circuit. Its function, insulation arrangement and equipment boundaries need to be distinguished from the secondary signals used to control it.","In a switchyard equipment diagram, the primary reference identifies the electrical role of an installed component while the linked equipment schedule and manufacturer drawing supply its exact construction and dimensions. For this reference, the drawing identifies “Incoming primary current” at the input and “Series-reactor outgoing path” at the output. Its role differs from a shunt-connected reactor.","Read the connected power path before interpreting a secondary output or alarm. These original educational component references provide no product dimensions, dielectric rating, installation clearance or construction approval. 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: Incoming primary current. Identify its source device or document and the state represented on the drawing.","Follow the named output: Series-reactor outgoing path. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Its role differs from a shunt-connected reactor.","Read the connected power path before interpreting a secondary output or alarm. These original educational component references provide no product dimensions, dielectric rating, installation clearance or construction approval."],"drawingChecklist":["Label the source and connection reference for incoming primary current.","Identify the destination and defined state of series-reactor outgoing path.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Its role differs from a shunt-connected reactor."],"distinction":"Its role differs from a shunt-connected reactor. 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":"Incoming primary current"},{"label":"Output / connection","value":"Series-reactor outgoing path"},{"label":"Lookup label","value":"SPPR is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-hv-primary","relevance":"Public technical context for high-voltage primary equipment references. Primary switching equipment and instrument-transformer interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["power-transformer","capacitor-voltage-transformer","discharge-coil-capacitor-bank-interface"],"artwork":"pi26-series-reactor-primary-path-reference","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchyards","family":"hv-primary","input":"Incoming primary current","output":"Series-reactor outgoing path"},"plainEnglish":{"title":"What this block does","introduction":"Identifies the reactor inserted in the assigned main power-current path.","example":"In a switchyard equipment diagram, the primary reference identifies the electrical role of an installed component while the linked equipment schedule and manufacturer drawing supply its exact construction and dimensions. For this reference, the drawing identifies “Incoming primary current” at the input and “Series-reactor outgoing path” at the output. Its role differs from a shunt-connected reactor.","drawings":"Start at the named input: Incoming primary current. Identify its source device or document and the state represented on the drawing. Follow the named output: Series-reactor outgoing path. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Incoming primary current"},{"name":"Output","meaning":"Series-reactor outgoing path"},{"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":["Incoming primary current","SPPR","Series-reactor outgoing path"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Gas-insulated switchgear","url":"https://www.hitachienergy.com/products-and-solutions/high-voltage-switchgear-and-breakers/gas-insulated-switchgear"}],"profileId":"power-installation-hv-primary"},"url":"https://eloragrid.ai/symbols/series-reactor-primary-path-reference","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/series-reactor-primary-path-reference.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-hv-primary","publisher":"Hitachi Energy","title":"Gas-insulated switchgear","url":"https://www.hitachienergy.com/products-and-solutions/high-voltage-switchgear-and-breakers/gas-insulated-switchgear","scope":"Primary switching equipment and instrument-transformer interfaces.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for high-voltage primary equipment references. Primary switching equipment and instrument-transformer interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}