POLYGON TUBE Design Guide

Product catalog summary

Introduction
Polygon Company, established in 1949, is a leader in advanced composite materials for electrical insulation. Their capabilities include pultrusion, filament winding, and more, offering services from fabrication to sub-assembly.

Product Description
The Polygon Tube provides a secondary insulation layer for electric motor armatures, enhancing operator safety and eliminating the need for grounding. It is crucial for appliances rated as "Double Insulated."

Manufacturing Process
Polygon uses two bonding processes to optimize the physical and dielectric performance of their tubes, ensuring a permanent press fit on armature shafts. The tubes have a UL Certified temperature index of 180°C.

Standard Tolerances
The Polygon Tube allows for reduced production costs by enabling slip or press-fit into motor assemblies, securely locking components.

Quality Control
Each tube undergoes rigorous testing at a minimum of 5000 volts to ensure dielectric integrity, with UL approval to grade AFW-G-10.

Composite Material Features
The tubes consist of "E-Glass" fibers and epoxy, offering anisotropic properties controlled by fiber orientation.

Transformer and Distribution Products
Polygon has a long history in supplying insulating products for transformers and distribution, pioneering several technologies and products.

General Specifications

Concentricity Standard TIR: 0.004" (0.10mm)
Compressive Strength: 20,000 psi
Tensile Strength: 20,000 psi
Shear Strength: 6,500 psi
Water Absorption (24 hours): 0.16%
Specific Gravity: 1.8

Electrical Properties

Insulation Resistance: 2.38 x 10¹² ohm/8" length
Volume Resistivity: 2.41 x 10¹⁸ ohm/cm
Surface Resistivity: 3.93 x 10¹⁵ ohms
Dielectric Constant: 4.15
Dissipation Factor: 0.0094

Additional Products
Polygon offers a range of products including composite cross bars, high-temperature fuse tubing, and commutator rings, all designed for high performance at elevated temperatures.

Conclusion
Polygon Company is a vertically integrated supplier in the electrical market, offering a wide range of composite products with unmatched quality and performance.

Catalog excerpts

ELECTRICAL INSULATION Since its establishment in 1949, Polygon Company has stood as one ofthe worldْs premiere leaders in the development of advanced compos-ite materials for many electrical insulative applications. Polygons pro- duction capabilities are among the widest in the world and range from the pultrusion process to filament winding, braiding and circ-winding.In addition, Polygon is known as the worldҒs leading fabricator of com-posite materials. > The Polygon Tube is the insulation sleeve that provides armatures of electric motors a secondary layer of insula-tion. This secondary insulation...

Open the catalog to page 2

ELECTRICAL INSULATION The anisotropic properties composite materials are often misunderstood. Therefore, it is helpful to reviewsome of Polygon Tube'sٙ basic material features as they relate to armature insulation. > THE COMPOSITE TUBE CONSISTS PRIMARILY OF TWO DIELECTRIC MATERIALS: REINFORCING MATERIAL: Consisting of continuous fiber bundles of electrical grade "E-Glass" woven togetherat a specific helix angle with respect to the tube axis and thermoset epoxy resin, property retention (bothin-dielectric and structural) electrical temps. EPOXY: That has a Tg of approximately 120C [266F] or 180C[356F]Properties...

Open the catalog to page 3

ELECTRICAL INSULATION Tensile Strength (Axial)175 KSI Compressive Strength (Axial)175 KSI Compressive Modulus (Axial)6.1 MSI Shear Strength7.0 KSI Shear Modulus0.5 MSI Modulus of Elasticity (Axial)6.1 MSI > PoissonԒs Ratio0.28 Youngs Modulus5.5 x 10 > 6 PSI The all compositecross bar fromPolygonutilizes an engineered com-posite structure that results in excel-lent retention of mechanical andphysical properties at elevated tem-peratures. This all-composite cross bar eliminatesthe need for traditionalmetallic cross bars that need second-ary insulation that is augmented withan additional layer of...

Open the catalog to page 4

ELECTRICAL INSULATION PG-P-6001 designates a general ٓE glass fiber reinforced composite tubing material, with an epoxy resinas matrix. > All calculations based on an 40Ժ wind angle Hoop Strength (Fy x 10 > 3 )60 Tensile Strength (Ft x 10 > 3 PSI) 60 Flexural Strength, Axial (Fbx x 10 > 3 PSI) 55 Poissons Ratio, Axial 0.3 Shear Modulus (Gxy x 10 > 6 PSI)0.8 Elastic Modulus (Ex x 10 > 6 PSI)2.5 Elastic Modulus, Transverse (Ey x 10 > 6 PSI) 1.8 > Ң؅ Thermal Conductivity (BTU/hr/sq ft/F/in)1.8 to 2.3 Specific Heat (BTU/lb/ںF)0.27 > ★ Coefficient of Thermal Expansion (in/in/F)5.0 to 7 x 10 > 6 Heat...

Open the catalog to page 5

ELECTRICAL INSULATION This product has been designed to provide excellent performance at elevated temperatures. With a glasstransition temperature of over 210ٺC this epoxy filament wound commutator ring material exhibits superb performance over extended exposure to elevated temperatures. > All calculations based on an 89 wind angle Hoop Strength (Fy x 10 > 3 )120 Tensile Strength (Ft x 10 > 3 PSI) 20 Flexural Strength, Axial (Fbx x 10 > 3 PSI) 20 Poissonڒs Ratio, Axial 0.08 Shear Modulus (Gxy x 10 > 6 PSI)0.6 Elastic Modulus (Ex x 10 > 6 PSI)1.6 Elastic Modulus, Transverse (Ey x 10 > 6 PSI) 5.0...

Open the catalog to page 6

ELECTRICAL INSULATION TYPICAL PROPERTYTEST METHODCONDITIONUNITSVALUE GradeGP-1GP-2GP-3 > Electric StrengthASTM D-149 Perpendicular > ParallelIn OilKV/in505050 Power Factor 60 HzASTM D-1500.030.030.03 Dielectric Constant 60 HzASTM D-1505.05.05.0 Arc ResistanceASTM D-495Sec100100120 > Ultimate Tensile StrengthASTM D-638RTPSI70,000100,00070,000 Flexural StrengthASTM D-790RTPSI70,000100,00070,000 100CPSI25,00035,000 150ںCPSI15,00020,000 Flexural ModulusASTM D-790RTPSI3 x 10 > 6 6 x 10 > 6 3 x 10 > 6 100CPSI2 x 10 > 6 2.5 x 10 > 6 150ںCPSI1.5 x 10 > 6 2.0 x 10 > 6 ★ Impact StrengthASTM D-256RTFt-lb/in...

Open the catalog to page 7

103 Industrial Park DrIVE / P.O. Box 176 / Walkerton, IN 46574 USA / 800.918.9261 / Ph: 574.586.3145 / Fx: 574.586.7336 / polygoncompOSITES.com COMPOSITE BEARINGS & BUSHINGS POLYLUBEٮ > COMPOSITE MEDICALTUBING POLYMED > COMPOSITE CYLINDERTUBING POLYSLIDEή POLYSTRUCTURE > COMPOSITE SHAPES& FORMS POLYGON TUBE > ELECTRICAL GRADECOMPOSITE TUBING size="-3">

Open the catalog to page 8

All POLYGON catalogs and technical brochures

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

Brand list