The Composite Insulators The Composite Insulators comply with
the latest editions of and amendments to, the
standards/specification listed below:
CSA
CANADIAN STANDARDS ASSOCIATION
G164-4
- Hot dip galvanizing of
Irregular Shaped Articles
CAN/CSA
- Quality Assurance Program
Categories 2299.3
ANSI
- AMERICAN NATIONAL STANDARDS
INSTITUTE
C29.1
- American Standard Test Method For
Electrical Power Insulators
C29.7
- American Standard For Wet-processed
Porcelain Insulators (High Voltage Line Post Type) Electrical Power
Insulators
987-1985
- IEEE Guide For Application of
Composite Insulators
D750
- Recommended Practice for Operating
Light and Weather Exposure Apparatus (Carbon Arc Type) For
Artificial Weather Testing Of Rubber Compounds.
D1499
- Recommended Practice For Exposure
of Plastics.
D2240
- Rubber Properties, Durometer
Hardness
D2565
- Recommended Practice For Operating
Xenon-Arc Light And Water Exposure Apparatus Plastics.The
weathershed of the Post Insulators shall be manufactured from
either Hydrated Alumina Ethylene Propylene Copolymer (EPM) as the
primary constituent or Silicone Elastomers. The weathershead shall
be injection moulded and brought to final cure state in one
continuous process to prevent internal undercure or surface
overcure. Additionally, the weathershead shall provide hydrophobic
surface, even after exposure to tropical marine environment, ultra
violent rays and moisture.Core The rod or the core is
manufactured from Fibreglass, having 70-75 by weight of auxiliary
aligned glass fibre bonded by an organic resin. The rod is either
be cast or pultruded.The end fittings are have the following
properties:
i. are
compressed onto the Fibreglass rod
memberii. are
not move relative to the central Fibreglass rod at applied
loads equal to two times the rated Routine Test Load or maximum
designed cantilever
loadsiii. are attracted
to the rod after completion of all external heat processes used to
cure or bond component parts. The insulator are
provided load limiting bases that will deform under
longitudinal loading of more than 100% of the rated design
cantilever load. Performance Characteristics The
Polymeric Insulators are meet the under listed performance
characteristics.
ITEM
11kV
33KV Dry Flashover
Withstand
90kV
180kV Wet flashover withstand
70kV
165kV Positive Impulse Critical
flashover
145kV
300kV Maximum
Radio Interference Voltage Below 1micro
volt Below 1 micro
volt
Design Tension
Strength
100kN
100kN Residual Strength after Power
Arc
80kN
80kN Mechanical
Proof Test
Load
45kN
45kN Maximum Sustained
Load
34kN
34kN Design Torque
Rating
83
Nm
83 Nm The insulator are suitable for accepting both
aluminium and copper conductors having cross-sectional areas
ranging from 35mm2 to 265mm2. The insulators are designed for
mounting on the angle and channel crossarms specified in
Specification E14 All exposed ferrous part shall be treated
against corrosion. Treatment by hot dip galvanizing is
preferable. /* January 22, 2024 19:08:37
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a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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