{"id":"lapp-insulators-315291-70-l","name":"315291-70+L porcelain station-post insulator","manufacturer":"LAPP Insulators","category":"switchgear","description":"315291-70+L porcelain station-post insulator from LAPP Insulators. The manufacturer table lists Leakage Distance, Reference Standard, in. [mm]: 132 [3353]; Leakage Distance, High Leak, in. [mm]: 200 [5080]; Leakage Distance, Extra High Leak, inches [mm]: 215 [5461]. Download the source catalogue and inspect the 315291-70+L column.","equipment":["porcelain station-post insulator","315291-70+L"],"keywords":["315291-70+L","315291-70+L","porcelain station-post insulator","insulator","station post","switchyard","substation"],"markets":["Global"],"marketNote":"The source table supplies the listed product values. The project insulation, mechanical loading and regional requirements must be checked for the selected installation.","kind":"product","sourceUrl":"https://us.lappinsulators.com/documentation/","officialEvidenceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1","sourcePublisher":"LAPP Insulators","formats":["PDF"],"availability":"direct","accessNote":"Download the verified original here. The manufacturer source is linked for revision checks; preview images are for inspection and the original drawing supplies the design dimensions.","checkedAt":"2026-11-03","files":[{"id":"catalogue","name":"750kV.pdf","filenameBasis":"source-url","format":"PDF","purpose":"Manufacturer catalogue with 315291-70+L data and outline references on PDF page 1","url":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf","availability":"direct","bytes":197208,"sha256":"85447af345ad74e39403ebf16909a3fd324eb8fca3d64d19bd23c1d5b0b2a014","retrievedAt":"2026-11-03T01:37:53.143222+00:00","validation":"signature-checked","hosted":true,"redistribution":"unknown","previewPages":[1],"rightsReview":{"checkedAt":"2026-11-03","sources":["https://us.lappinsulators.com/documentation/","https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf"],"note":"Current manufacturer download listing and the complete catalogue text were inspected. No explicit reproduction prohibition was identified in this catalogue. Copyright remains with the named manufacturer; no redistribution licence is asserted."},"hostingBasis":{"policy":"no-explicit-prohibition","checkedAt":"2026-11-03","evidenceUrl":"https://us.lappinsulators.com/documentation/","attribution":"LAPP Insulators"},"delivery":{"kind":"original","name":"750kV.pdf","format":"PDF","sha256":"85447af345ad74e39403ebf16909a3fd324eb8fca3d64d19bd23c1d5b0b2a014","bytes":197208,"includes":["Unchanged official original"]},"downloadUrl":"https://eloragrid.ai/tools/cad-library/download/lapp-insulators-315291-70-l/catalogue"}],"fileClasses":["porcelain station-post insulator","manufacturer model-specific table","catalogue outline reference"],"configurationNote":"Use the 315291-70+L column on PDF page 1. The download is the complete catalogue, not a standalone DWG or STEP part.","applications":["switchyards","substations"],"technicalFacts":[{"label":"Leakage Distance, Reference Standard, in. [mm]","value":"132 [3353]","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"},{"label":"Leakage Distance, High Leak, in. [mm]","value":"200 [5080]","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"},{"label":"Leakage Distance, Extra High Leak, inches [mm]","value":"215 [5461]","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"},{"label":"Cantilever Strength, lbs. [kN]","value":"1200 [5.3]","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"},{"label":"Tensile Strength, lbs. [kN]","value":"20000 [89.0]","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"},{"label":"Compression Strength, lbs. [kN]","value":"60000 [266.8]","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"},{"label":"Impulse Withstand, kV","value":"750","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"},{"label":"Net Weight, Each, lbs. [kg]","value":"146.0 [66.2]","sourceUrl":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"}],"partNumber":"315291-70+L","equipmentFacts":[{"label":"Equipment / resource","value":"315291-70+L porcelain station-post insulator"},{"label":"Manufacturer","value":"LAPP Insulators"},{"label":"Resource type","value":"Product"},{"label":"Part number","value":"315291-70+L"},{"label":"Leakage Distance, Reference Standard, in. [mm]","value":"132 [3353]"},{"label":"Leakage Distance, High Leak, in. [mm]","value":"200 [5080]"},{"label":"Leakage Distance, Extra High Leak, inches [mm]","value":"215 [5461]"},{"label":"Cantilever Strength, lbs. [kN]","value":"1200 [5.3]"},{"label":"Tensile Strength, lbs. [kN]","value":"20000 [89.0]"},{"label":"Compression Strength, lbs. [kN]","value":"60000 [266.8]"},{"label":"Impulse Withstand, kV","value":"750"},{"label":"Net Weight, Each, lbs. [kg]","value":"146.0 [66.2]"},{"label":"Listed file formats","value":"PDF"},{"label":"Listed files","value":"1"},{"label":"Available previews","value":"1 catalogue page previews"},{"label":"Recorded revisions","value":"Confirm the revision with the manufacturer"},{"label":"Source checked","value":"2026-11-03"},{"label":"Download access","value":"Email registration for site downloads; official source links are also available"}],"previewImage":"/tools/cad-library/drawing-preview/lapp-insulators-315291-70-l/catalogue?asset=a0d1b1dae391a2de87d0f87eb4c1228d89b09c914b23d0ff3d8e06a11bffbfb3","relatedReferences":[{"name":"Switchgear panel","url":"https://eloragrid.ai/objects/switchgear-panel"},{"name":"Switchboard","url":"https://eloragrid.ai/objects/switchboard"},{"name":"Ring main unit","url":"https://eloragrid.ai/objects/ring-main-unit"}],"fileChoiceGuidance":["Download 750kV.pdf and open PDF page 1. Find the 315291-70+L column; other tables and model rows or columns describe different insulators. This source is a catalogue PDF. A native DWG or STEP file is not included; use Request CAD for an editable model."],"plainEnglish":{"title":"What the equipment does","introduction":"A station-post insulator supports an energised conductor while separating it electrically from its grounded support. Its end fittings, height and mechanical strength determine how it can be mounted.","example":"When positioning 315291-70+L on a substation support, use PDF page 1 to compare its mounting interfaces with the structure and conductor connection. The listed Leakage Distance, Reference Standard, in. [mm] is 132 [3353].","drawings":"Download 750kV.pdf and open PDF page 1. Find the 315291-70+L column; other tables and model rows or columns describe different insulators. This source is a catalogue PDF. A native DWG or STEP file is not included; use Request CAD for an editable model.","terms":[{"name":"CAD","meaning":"Computer-aided design files used to prepare drawings and models."},{"name":"Revision","meaning":"The recorded version of a drawing or model."}],"diagram":"flow","steps":["Identify the support position","Match the named reference and fixing","Coordinate the structure and conductor"],"caption":"A simplified explanation of how this item works. It does not show terminal wiring or an operating procedure.","sources":[{"label":"LAPP Insulators official source","url":"https://us.lappinsulators.com/wp-content/uploads/2026/07/750kV.pdf#page=1"}],"profileId":"station-post-insulator","checklist":["For 315291-70+L, the source records Leakage Distance, Reference Standard, in. [mm]: 132 [3353]. Match that value to the conductor-support arrangement.","Compare the 315291-70+L column on PDF page 1 with the exact fixing or stud arrangement shown in the catalogue; use the dimensions for this exact reference.","The source also lists Leakage Distance, High Leak, in. [mm]: 200 [5080]. Check the project requirement against the manufacturer’s specified units and conditions.","Leakage distance follows the insulating surface. It is different from the overall height; use the height value for the physical layout."],"questions":[{"question":"Where is the 315291-70+L information in this download?","answer":"Open PDF page 1 of 750kV.pdf and find the 315291-70+L column. The page preview preserves the manufacturer table; the download contains the complete catalogue."},{"question":"Is an editable CAD model included for 315291-70+L?","answer":"This entry provides the manufacturer PDF reference and its model-specific values. A DWG, DXF or STEP model is not attached; request the exact model and preferred format here."}]},"canonicalUrl":"https://eloragrid.ai/tools/cad-library/equipment/lapp-insulators-315291-70-l"}