Product DescriptionThe composite insulator consists of a mandrel,
an umbrella sheath and a connecting harness.The material of
the mandrel is glass fiber reinforced plastic, which is used
to provide the mechanical properties of the insulator. The
sheath is connected to the surface of the mandrel through
adhesives to protect the mandrel. The connecting fittings
are located at both ends of the composite insulator to connect
the composite insulator to the pole tower fittings.
ModelRated Votage Specified Mechanical
LoadStructure Height Minimum Dry Arc
DistanceMinimum Creepage Distance Lightning Impulse Withstand
Voltage Wet Power Frequency Withstand Voltage
(KV)(KN)(mm)(mm)(mm)≥(kV)≥ (kV)
FXBW-66/706670940±157502170410185Payment & Shipping Terms:Minimum
Order Quantity:100 pcsPrice:NegotiablePackaging Details:plywood
case, fumigated solid wood caseDelivery Time:45~50 days
EX-worksStandard:IEC 61952, ANSI C29.1RAW MATERIALS:End
FittingsCoreSheds and HousingHot dip galvanized cast iron or cast
steelEpoxy & Glass fiber(ECR is available)HTV Silicone RubberMin.
thickness of the galvanization: 86μmDiameter(mm): Φ38, Φ40, Φ55,
Φ70, Φ90, Φ120Color: Grey, RedNotes:1. The color can be
customized.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.Electrical test equipment and Mechanical
test machineProduct structure and advantagesOur company specializes
in the production of composite insulators for transmission lines.
The main structure is composed of rubber, epoxy glass fiber core
and metal end fittings. Compared with similar ceramic and glass
insulators, silicone rubber insulators have the following
advantages:(1) Small size, light weight (1/7~1/10 times that of
ceramic insulators with the same voltage), good elasticity of the
shed, not easy to break, convenient transportation and
installation, and economical.(2) High mechanical strength. FRP rods
have high tensile strength, which is 5-10 times that of ceramic
materials. The cross-section of the core material is small, the
product is small in size, light in weight, and high in tensile
strength. It is easy to manufacture large-tonnage insulators above
300KN.(3) High antifouling performance and good aging resistance.
The silicone rubber injection molded shed has good hydrophobicity
and mobility, which makes the insulator have high anti-pollution
flashover voltage and good electrical corrosion resistance.(4) Easy
installation and maintenance, which can greatly reduce maintenance
costs caused by power outages and manual labor intensity.(5) The
production process is simple and the delivery time is short.
FEATURES: 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. 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.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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