Insulator string and corona-control geometry
Porcelain long-rod insulators, yoke plates, arcing rings and guard rings are reviewed as one assembly against electrical clearances, string layout and approved connection drawings.
REFERENCE 03 · QUOTATION-BASED REFERENCE
380kV quadruple-bundle transmission line hardware quotation
BOQ review for porcelain long-rod insulator strings, yoke plates, arcing and guard rings, compression dead-end clamps, AGS suspension clamps and spacer dampers.
PROJECT CONTEXT
Technical basis at a glance.
BOQ review for porcelain long-rod insulator strings, yoke plates, arcing and guard rings, compression dead-end clamps, AGS suspension clamps and spacer dampers.
PROJECT STAGEBudgetary quotation
QUANTITY BASISSubject to certified drawings
SUPPLY BOUNDARYEquipment and materials only
EQUIPMENT APPLICATION
Relevant supply scope.
- Porcelain long-rod insulator strings
- Yoke plates, arcing rings and guard rings
- Compression dead-end clamps
- AGS suspension clamps
- Spacer dampers and associated hardware
How a 380kV quadruple-bundle line hardware package is checked for geometry, corona control and mechanical duty.
EHV purchasing teams must confirm string geometry, conductor data, attachment dimensions, compression interfaces and bundle spacing before comparing hardware. Drawing-controlled matching reduces interface risk across the full 380kV transmission line hardware package.
Suspension and dead-end interfaces
AGS suspension clamps and compression dead-end clamps are matched to conductor construction, diameter, rated strength, hardware load class and terminal dimensions.
Bundle spacing and vibration control
Spacer dampers are selected from the confirmed quadruple-bundle geometry, sub-conductor data, span information and vibration criteria rather than by voltage class alone.
A traceable path from BOQ review to export handover.
The workflow below is the standard control path for a comparable equipment or material package. Final deliverables follow the confirmed order scope, approved drawings and agreed inspection plan.
- 01
Confirm system basis
Record voltage, frequency, standards, service environment and customer-approved technical inputs.
- 02
Normalize the BOQ
Align item codes, descriptions and quantities; flag missing data, overlaps and unclear scope boundaries.
- 03
Match drawings and interfaces
Check conductor, insulator, pole or tower, attachment, cable and grounding interfaces against revision-controlled drawings.
- 04
Prepare the technical package
Organize datasheets, general arrangements, drawings, schedules and a clear deviation or clarification record.
- 05
Coordinate quality documents
Define the applicable inspection plan, material certificates, dimensional records and release documents for the confirmed order.
- 06
Pack and hand over
Use BOQ-linked package identification, shipping marks and a document index to support receiving and export delivery.
Evidence purchasing and engineering teams can review.
The document set is defined by the confirmed product scope and agreed inspection plan. Typical controls for a comparable package are summarized below.
Drawing and revision control
Approved drawings, interface schedules and revision status are kept aligned with BOQ item references.
Material and inspection records
Applicable material certificates, dimensional checks and inspection records are indexed by product family.
BOQ-coded packing control
Package marks and packing lists connect cartons, bundles or cases to BOQ lines for easier receiving checks.
Technical document handover
Datasheets, drawings, inspection records and the final document index are organized for engineering and purchasing review.
SCOPE & DISCLOSURE
What this reference means.
Quantities remain subject to final certified drawings. Client and country details are withheld, and no completion claim is made.