IEEE 1572-2004 pdf download IEEE Guide for Application of Composite Line Post Insulators
1.Scope
This is a guide for the application of composite post insulators to overhead transmission and distributionlines lt is based on utility field experiences, results of research laboratory tests, and manufacturersrecommendations.
The guide deals with composite post insulators, which include a core, weathersheds, and metal end fittingsThe core consists of resin and aligned glass fibers. The weathersheds are of elastomeric materials.
2. References
The following referenced documents are indispensable for the application of this document. For datedreferences only the edition cited applies, For undated references the latest edition of the referenceddocument (includi ng any amendments or corrigenda) applies.
Accredited Standards Committee C2, National Electrical Safety Code (NESC).
ANSI C29.11-1989, Composite Suspension lnsulators for Overhead Transmission Lines-Test.2
ANSI C29.17, For Insulators-Composite-Line Post Type.
IEC 61109, Composite lnsulators for A.C. Overhead Lines with a Nominal Voltage Greater than 1000 V-Definitions, test methods, and acceptance criteria.3
IEC/TR 60815, Guide for the Selection of Insulators in Respect of Polluted Conditions.IEEE Std 957TM,IEEE Guide for Cleaning Insulators
3. Definitions
For the purposed of this guide, the following terms and definitions apply. The Authoritative Dictionary ofIEEE Standards Terms, Seventh Edition (B14], should be referenced for terms not defined in this clause.
3.1 Structural terms
The following terms apply to the physical composition of the insulator.
3.1.1 base: An accessory that enables an elastomeric line post to be mounted to a pole or tower.
3.1.2 end fittings: The insulator attachment hardware that is connected to the core.
3.1.3 grading device: A device for controlling the potential gradient at the end fittings, such as a metal ringor various sericonductive devices.
3.1.4 hollow core: A fiber reinforced resin marix, generally cylindrical or conical in shape, whichsurrounds a longitudinal cavity and forms the mechani cal load-bearing component of a hollow insulator.
3.1.5 housing: The external elastomeric covering installed over the core to afford it protection. Dependingon the design of the insulator, this covering may comprise a separate or integral sheath-weathershedsystem. In both cases, the weathersheds provide the wet electrical strength and leakage di stance, whereas thesheath provides the core with protection between weathersheds and near the end fittings
3.1.6 post insulator: An insulator with attached metal parts having a meansfor direct and rigid mounting onstructures and for semirigidly supporting line conductors.
3.1.7 section length: The distance from the primary mounting features or coupling zones from one end of aninsulator to the other end, as defined by the manufacturer.
3.1.8 solid core: The axially aligned fiber-reinforced resin rod that forms the mechanical load-bearingcomponent of the insulator.
NOTE_This qui de deals with solid and hollow core insulators
3.2 Electrical terms
The following terms apply to electrical phenomena that may occur on housing/weathershed material duringservice.
IEEE 1572-2004 pdf download
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