General
- Insulator is a
material that resists the flow of electric current. It is an object
intended to support or separate electrical conductors without passing
current through itself.
- An insulation
material has atoms with tightly bonded valence electrons. The term
electrical insulation has the same meaning as the term dielectric.
- An electrical
insulator resists the flow of electricity. Application of a voltage
difference across a good insulator results in negligible electrical
current.
- Before electricity
was made, there was the Big Electricity to deal with: lightning. Glass
insulators were LRIs (Lightning Rod Insulators), used to insulate
lightning rods and cables from structures.
Process
- Steatite, cordierite,
forsterite, magnesium oxide and aluminum oxide are among the wide
varieties of raw materials used in the production of Du-Co ceramic
insulators. Materials are tested and monitored throughout the production
process.
- Glass temperature for
insulator production degree to 2050-degree range, depending on the size
of the insulator. Smaller insulators could be run hotter, and hotter
glass required the I-D machine to advance more rapidly.
- Porcelain insulator
production for high voltage application can be made by two possible
methods: 1.The conventional (plastic) production process. 2. The
isostatic (developed within PPC group) production process.
Applications
- The software program
called Insulator Selection Tool (IST) can be applied for different
practical cases of Statistical principles of insulator dimensioning. One
of the applications can be the use of the field data obtained at test
stations. Such stations are normally equipped with different measurement
systems for pollution monitoring.
- The PLP Polymer
Insulators are for use in overhead distribution lines using bare or
covered conductors. They are particularly suited for use with Spacer
Cable and Tree wire as a better electrical alternative, to porcelain
insulators.
- Polymer Insulators
can be used with jacketed jumper wires, eliminating skinning, and
providing additional wildlife protection at equipment locations.
Technology
- Insulators composed
of finely spaced alternating layers of dielectric and metal are thought
to minimize secondary emission avalanche (SEA) growth. That can be
achieved through High Gradient Insulator Technology
- The Silicon On
Insulator (SOI) technology has been adopted by major companies for the
fabrication of high-performance, low-power CMOS circuits.
- A Insulation Company
used only Silicone Rubber compounds as the material for the composite
insulator housing. The extensive experience in this field has
positioned that company as market leader in the adaptation and use of
composite insulations in order to replace the glass or porcelain
technologies.
Market
- The UK thermal
insulation market, including building and industrial insulation, has
demonstrated strong growth over the five year review period. The market
has mainly been driven by demand for building thermal insulation in
recent years, while the development of industrial thermal insulation has
been moderate.
-
According to a company's 2008 State of
the Industry Report, the number of insulators reporting a drop in dollar
volume almost tripled since last year. Forty-three percent of insulators
saw their business drop off in 2007 — a figure significantly higher than
for roofers and siders.
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