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Heat Shrinkable Pole Cap

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Heat Shrinkable Pole Cap Specification

Surface Treatment
Smooth, anti-tracking finish

Installation Guideline
Clean pole top, fit cap, uniformly apply heat for full shrinkage and seal

Feature
Weather resistant, UV resistant, anti-tracking, corrosion proof

Size
Available for 11kV, 22kV, 33kV applications

Layer
Single wall

Thermal Conductivity
0.22 W/mK

Coating Type
Non-Adhesive

Density
1.2 Gram per cubic centimeter(g/cm3)

Product Type
Heat Shrinkable Pole Cap

Material
Cross-linked Polyolefin

Rated Voltage
Up to 36kV

Tensile Strength
>10 MPa

Width
Custom as per pole diameter

Thickness
2.5 mm

Application
Insulation and environmental sealing of pole terminations

Breakdown Voltage
>25 kV/mm

Heat Conductivity
0.22 W/mK

Color
Red/Black

Max Withstanding Temperature
110C continuous

UV Resistance
Excellent

Shrink Ratio
3:1

Water Absorption
<0.5%

Storage Temperature
0C to 50C

Service Life
>20 Years

Minimum Shrinking Temperature
120C

Flame Retardancy
Self-extinguishing

About Heat Shrinkable Pole Cap

Provided Pole Cap is manufactured from high quality cross-linked polyolefin material under the guidance of our expert professionals as per the set quality norms. It is fitted to drilling machinery and equipment. Further, offered caps are available in numerous sizes or known for their unique features like superior grade finish, sturdy design, corrosion resistance and greater durability. Offered Pole Cap mainly used in warping, splitting, cracking mainly from to surface, which can cause gaps and loosening of tool handles.

Pole Cap is Heat Shrink Cap, used to cover the top of the Wooden Power Pole & to protect it from ingress of water / moisture, thereby increasing Pole life. The caps are manufactured from high quality Cross-linked Polyolefin material.

The Best & Cost-effective Solution for long term maintenance of Poles :

Wood shrinks when losing moisture from the cell walls & swells when gaining moisture in the cell walls. This shrinking & swelling can result in warping, splitting, cracking mainly from top surface; which can cause gaps & loosening of Tool Handles. Wooden Poles with Pole Cap eliminates such problems & avoids extra cost of Clamps, used to tighten the gaps; thereby avoiding long term maintenance of wooden poles.
Use of Polecap typically adds some nominal percentage to the total cost of New Pole replacement. Precaution is always better than cure.

Features:

Hot melt adhesive lining provides 100% environmental sealing against weathering, moisture, contamination and adverse environmental conditions according to IP 68.
Resistance to UV rays & Ozone.
Versatile and cost effective, as 5 sizes of Pole Cap covers Pole dia. from 140 mm to 460 mm.
Service life of Pole Cap is more than 30 years.
Easy installation on concrete, wood, steel or composite poles in minutes.

Benefits :

Once the heat applied, adhesive filled inside the top surface (optional) melts & penetrates into the pole cracks and cavities, thereby reinforces the top of the pole.
Provides excellent Impact resistance, i.e. when a Pole end covered with Pole cap hits on a sharp edge, it would not crack.
Prevents birds from perching (woodpecker damage) or nesting on top of round tubular & solid poles. Protects the top of the pole from damage caused by freeze and thaw conditions.
Eliminates outages from flash-over & electrocutions.
No maintenance after installation.

Technical Qualification Report : QR 1035

SELECTION CHART

All dimensions are in mm

CODE NO.
Ds (Min.)
Df (Max.)
LS (Min.)
Tf(± 10%)
POLE RANGE

GPC 801
230
125
220
4.0
140 - 200

GPC 901
310
120
220
7.0
140 - 280

GPC 1001
400
204
220
6.0
230 - 360

GPC 1101
500
200
220
6.0
230 - 460

D : Internal Diameter ; s : as supplied ; f : after free recovery

TECHNICAL SPECIFICATION

PROPERTIES
VALUE
STANDARD

Tensile Strength
12 N/mm² (Mpa) (min.)
ASTM D638

Ultimate Elongation
350% (Min.)
ASTM D638

Water absorption
0.2 % (max.)
ASTM D570

Accelerated Ageing
(120^oC for 500 Hrs)
ASTM D2671

Tensile Strength
11 N/mm² (Mpa) (min.)
ASTM D 638

Ultimate Elongation
300%(Min.)
ASTM D638

Heat Shock (250^oC for 30 Min.)
No Cracking or flowing
ESI 09-11

Continuous Temperature limit
-40^oC to + 110^oC
IEC 216

Dielectric Strength
12 KV/mm. (Min.)
ASTM D149

Volume Resistivity
1 x 10¹⁴ Ohm.cm(min.)
ASTM D257

Dielectric Constant
5 (Max.)
ASTM D150

INSTALLATION INSTRUCTIONS

Polecap supplied by us are in an expanded form. When heated above 1250c they attempt to shrink back to their original dimensions, conforming to the objects they cover. Use a propane (preferred) or butane gas torch. Adjust the torch to obtain a soft blue flame with a yellow tip. Pencil-like blue flames should be avoided. Keep the flame moving continuously to avoid scorching the material.

Pole Preparation :

If necessary, cut the Pole end so that it is straight and even. Clean and de-grease the Pole surface that will come into contact with sealant. (Fig. 1)
Installation of Polecap :

Place the Polecap over the top of the Pole.(Fig. 2)

Shrink the Polecap into place, starting at the closed end and working towards the Pole Adhesive will be visible at ends. (Fig. 3)
Properly installed Polecap will be smooth and conform to Pole. Allow the cap to cool before applying any mechanical strain. Installation of Pole cap completed. (Fig. 4)

Superior Insulation and Seal

Our Heat Shrinkable Pole Cap delivers top-tier electrical insulation and dependable sealing for pole terminations. Its unique material composition and advanced design guarantee continuous performance in harsh outdoor conditions, safeguarding infrastructure and extending equipment life.

Long-Term Reliability and Protection

Designed with a service expectancy exceeding 20 years, this pole cap endures UV light, weather, and corrosive environments. Its anti-tracking finish and self-extinguishing features minimize maintenance needs and mitigate failure risks, making it ideal for critical electrical installations.

Easy Installation and Custom Fit

With simple installation stepsjust clean, cap, and heatit suits site conditions perfectly. The cap shrinks at 120C for a tight, long-lasting fit, reducing installation time and labor. Sizes are fully customizable for your pole diameters, ensuring seamless compatibility.

FAQs of Heat Shrinkable Pole Cap:

Q: How do I correctly install the Heat Shrinkable Pole Cap?

A: Ensure the pole top is clean and dry, position the pole cap over the termination, and apply uniform heat (minimum 120C) using a gas torch or hot air gun. Continue heating until the cap shrinks fully and forms a tight seal.

Q: What are the main benefits of using this heat shrinkable pole cap?

A: This cap delivers robust electrical insulation up to 36kV, provides waterproof and anti-tracking protection, and resists UV rays and corrosion, granting long service life while minimizing maintenance for power pole terminations.

Q: When should I use the Heat Shrinkable Pole Cap?

A: Use it whenever reliable insulation and environmental sealing are needed for pole terminations, especially in high-voltage applications (11kV, 22kV, 33kV), or in outdoor environments exposed to moisture, sunlight, or harsh weather.

Q: Where can this pole cap be applied?

A: It is suitable for electrical distribution poles in outdoor settings such as power utility networks, substations, and industrial sites where long-term, weatherproof insulation and sealing are required.

Q: What makes the material of the pole cap ideal for outdoor applications?

A: The cross-linked polyolefin material offers excellent UV resistance, flame retardancy, anti-tracking, and corrosion-proof properties, making it exceptionally durable against environmental stressors.

Q: What pole diameters or sizes are supported?

A: Widths are fully customizable to match the diameter of your poles. The Heat Shrinkable Pole Cap is available for standard voltage classes: 11kV, 22kV, and 33kV.

Q: How does the non-adhesive, smooth finish benefit the installation?

A: The non-adhesive, anti-tracking surface simplifies installation and provides a reliable seal against moisture and contaminants, while reducing the chance of surface electrical discharge.

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