Product Description Composite tension insulators are
essential components used in electrical power transmission systems.
They are designed to provide reliable support for power lines while
also insulating them from the surrounding environment. The 66kV
composite tension insulator is a high-quality product that can
withstand high voltage and harsh environmental conditions. The
66kV composite tension insulator is easy to install and maintain.
Its simple design allows for quick and easy attachment to power
lines, reducing installation time and costs. Maintenance is also
minimal, as the insulator requires no special cleaning or upkeep
beyond regular inspections.Typical Line Voltage(kV)Section
Length(mm)Dry Arcing Distance(mm) Leakage
Distance(mm)Specified Mechanical Load(SML, kN)Routine Test
Load(RTL, kN)1min. Power Frequency Withstand
Voltage(Wet) (kV)Critical Impulse Flashover Voltage(Pos/Neg)
(kV)25432±10275600703580190kV/220kV Notes:1. Different
strength and coupling fittings are available.2. Below 220kV
electrical data shown for composite line post insulators without
corona rings and mounted vertically. Wuhan Line
Power recommends corona rings to be installed at 220kV and
above.3. Additional section lengths and creepage distances are
available. Contact sales agency for details.4. All dimensions,
tolerances and tests are within allowable IEC standards or
ANSI standards.5. All dimensions are in millimeters(mm). If in
inches and pounds, please specify.6. We can design according to the
end user's requirements. FEATURES:1. The silicone rubber
housing of Composite Line Post Insulator were taken shape by whole
injection. It has good hydrophobicity, hydrophobicity migration and
soil resistance, as well as excellent electrical insulation
properties and aging resistance, which could prevent effectively
those accidents of pollution flashover so as to ensure the safe
running of high voltage transmission lines. 2. The modified
ECR fiberglass reinforced epoxy resin rod is used as it has good
resistance to high temperature, stess corrosion & acid attack, as
well as fine damping action, high tensile strength (> 1200Mpa)
and resistance to creep and fatigue failure, which effectively
ensure the internal insulation quality and mechanical stength of
insulators.3. End fittings are crimped onto fiberglass rod
with voice-operated displacement type crimper. The insulators with
this crimping technique have high mechanical strength and small
dispersion. Taking the most advanced automatic overall injection
moulding technic and connection method of crimping for production
and assembling, and the whole crimping procedure controlled by
computer and the crimping result monitored by ultrasonic detector
to assure each product is qualified.
ItemRequirementMeasured ValuedVisual examinationFuchsine,grey or white, no obvious mechanical admixture. Vulcanized sillion rubber with dense and smooth cutting surface.OkHardness (shore A)≮5065~70Tensile strength (Map)≮44~6Failure elongation (%)≮150≮180Tearing strength (kN/m)≮10 (right angle sample)12~15Volume resistivity (Ω.m)1X10123~8X1012Puncture strength (kV/mm)Alternating current ≮22≮30Tracking and erosionTMA4.5,erosion depth≯2.5mmTMA4.5, erosion depth
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