Introducing such insulators from the structure and advantages of
Composite insulator structure
Synthetic insulators, also known as organic composite insulators,
rubber insulators or non-porcelain insulators, are composite
structural insulators composed of organic synthetic materials,
mainly composed of a core rod, a metal fitting, a shed skirt and a
A fitting is a mechanical load transfer component of a composite
insulator that is assembled with a mandrel to form a connector for
a composite insulator. The structure affects the strength and
mechanical properties of the mandrel of the insulator.
The shed skirt is the outer insulating part of the composite
insulator. Its function is to make the composite insulator have
high enough insulation resistance against wet flash and pollution
flash to protect the mandrel from atmospheric erosion.
The mandrel is the load-bearing component of the mechanical load of
the composite insulator and the main component of the inner
Part of the bonding layer is to complete the connection between the
sheath and the mandrel with adhesive glue; the other part is to use
the potting glue to complete the connection between the sheds. The
quality of the bond is directly related to the level of internal
Synthetic insulator advantage
Excellent mechanical properties: the mandrel is made of epoxy glass
fiber, its expansion strength is 1.5 times that of ordinary steel,
3 to 4 times that of high-strength porcelain, the axial tensile
force is particularly strong, and it has strong vibration
absorption capacity, and its seismic damping performance is very
good. High, 1/7 to 1/10 for porcelain insulators.
Good anti-pollution performance: The synthetic insulator has water
repellency. When it rains, the synthetic insulator umbrella-shaped
corrugated surface will not wet and form a water film, which will
drip in the shape of water droplets, which is not easy to form a
conductive channel, and its pollution flash voltage is high. It is
3 times the same as the voltage grade porcelain insulator.
Excellent electrical corrosion resistance: the surface of the
insulator leaks and flashes to form irreversible deterioration, the
general standard is not less than 4.5 (ie 4.5kV), and the composite
insulator is 6 to 7.
Good anti-aging performance: After ten years of practice test, the
composite insulator has no change in surface non-wetting property
and resistance to electric corrosion, except that the color is
slightly deeper and the dielectric constant and dielectric loss
angle are slightly increased. , indicating that the anti-aging
performance is good.
Good structural stability: general porcelain suspension insulator
is internal rubber assembly structure, galvanic corrosion, low zero
value insulation resistance will be produced during operation, and
synthetic insulator is external rubber assembly structure, mandrel
is solid insulation material, no degradation And breakdown, there
will be no zero-value insulators.
High efficiency of line operation: Synthetic insulators have good
self-cleaning performance and no zero-value insulators. Therefore,
cleaning and inspection work can be changed every 4 to 5 years,
shortening the time for maintenance and power failure.
Light weight: The light-insulating insulator itself is light in
weight, easy to transport and construction, and can greatly reduce
the labor intensity of the staff.