{"schemaVersion":1,"slug":"ct-test-terminal","name":"CT test terminal","kind":"symbol","abbreviation":"CT test","aliases":["CT shorting terminal","current transformer test block","test disconnect terminal"],"category":"connections-wiring","drawingTypes":["Schematic"],"referenceFamilies":["IEC","IEEE / ANSI"],"summary":"A current-transformer terminal arrangement providing documented test and shorting facilities.","description":["A CT test-terminal arrangement connects current-transformer secondary wiring to measurement or protection equipment and provides the test or short-circuit facilities specified for the selected assembly. Its representation must be read with the manufacturer circuit and operating documentation.","Test-disconnect terminals are not all interchangeable. CT applications require the correct shorting behaviour and accessory arrangement. This reference explains what to identify in a drawing, not a procedure for disconnecting or working on a live CT circuit."],"readingNotes":["Identify each CT secondary path and the associated test or shorting connections.","Do not infer the operation of a test plug or link from a generic terminal mark."],"drawingChecklist":["Reference the exact terminal assembly.","Identify shorting links and test accessories.","Cross-reference the CT and connected measurement device."],"distinction":"A generic disconnect terminal is not automatically suitable for a CT secondary circuit. Use an arrangement specified for the CT application.","facts":[{"label":"Application","value":"CT secondary measuring and test circuit"},{"label":"Shorting behaviour","value":"Specific to selected assembly"},{"label":"Operating procedure","value":"Follow manufacturer and authorised work instructions"}],"references":[{"sourceId":"ct-terminals","relevance":"Manufacturer CT measuring, testing and leading-short-circuit terminal arrangements."},{"sourceId":"terminal-disconnect","relevance":"Contrast with generic disconnect-terminal products."}],"related":["current-transformer","terminal","terminal-strip","50-instantaneous-overcurrent"],"artwork":"ct-test","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/ct-test-terminal","illustration":{"url":"https://eloragrid.ai/library/illustrations/ct-test-terminal.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ct-terminals","title":"Transformer terminals for measuring and test circuits","publisher":"Phoenix Contact","url":"https://www.phoenixcontact.com/en-ie/products/terminal-blocks/transformer-terminal-blocks?p=7","type":"manufacturer","scope":"Current-transformer test terminals and leading short-circuit arrangements. Use the selected product's instructions for any intervention.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Manufacturer CT measuring, testing and leading-short-circuit terminal arrangements."},{"id":"terminal-disconnect","title":"Disconnect and knife-disconnect terminal blocks","publisher":"Phoenix Contact","url":"https://www.phoenixcontact.com/en-au/products/terminal-blocks/disconnect-and-knife-disconnect-terminal-blocks","type":"manufacturer","scope":"Public disconnect-terminal products, test access and model-dependent connection characteristics.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Contrast with generic disconnect-terminal products."}]}