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INSULATIONS/COATINGS
Many
types and/or combinations of insulations are available. Below are a
few of the more common ones, however many, many more are available!
Poly Amide-Imide
Enamel
Trade
names: HPT, HAPT,
HPAM, HTAI, GP200, MR200, HOK
Temperature Rating: 200C
Relative Dielectric Strength:
1500 Volts
NEMA Specifications:
MW-35C, MW-36C |
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Description: Film insulation
consisting of Polyimide resin. Typically red or purple in color.
Typical coating thickness is .0015-.0025", but varies with
conductor dimensions.
Applications: All types
of electromagnetic coils for motors & controls, as well as
a wide variety of other applications.
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Polyimide
Enamel
Trade names:
HML, Allex, Pyrex, Pyre ML
Temperature Rating: 220C
Relative Dielectric Strength: 1500 Volts
NEMA Specifications:
MW-16C, MW-20C |
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Description: Dual Film insulation
consisting of an underlying coating of Polyester (amide) (imide)
resin with an overcoating of polyamideimide resin. Typically red
or purple in color. Typical coating thickness is .0015-.0025",
but varies with conductor dimensions.
Applications: All types
of electromagnetic coils for motors & controls, as well as
a wide variety of other applications. Used where higher temperature
rating than Poly Amide-Imide is needed.
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Polyester
Glass
Trade names:
Daglass, Polyglass, SPG (DPG), SDG (DDG)
Temperature Rating: 155
or 180C
Relative Dielectric Strength:
500 Volts
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Description: Textile covering
consisting of pure fiberglass yarn, which is wrapped, varnish
treated, and then heat fused to the underlying conductor. Can
be constructed with a single layer or double layer of glass yarn.
Available with polyester, epoxy, or silicon varnish. Typically
used in high temperature applications with suitable varnish. May
be applied over bare conductor, various types of enameled conductors,
or over other insulations.
Applications: All types
of electromagnetic coils for motors & controls, as well as
a wide variety of other applications. Particularly suitable for
harsh mechanical environments due to abrasion/vibration resistance
and ability to bond well with various resins.
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Glass
Trade names:
Glass
Temperature Rating: 155-220C
(dependent upon bonding resin used)
Relative Dielectric Strength: 500 Volts |
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Description: Textile covering
consisting of pure fiberglass yarn, which is wrapped, varnish
treated, and then heat fused to the underlying conductor. Can
be constructed with a single layer or double layer of glass yarn.
Available with polyester, epoxy, or silicon varnish. Typically
used in high temperature applications with suitable varnish. May
be applied over bare conductor, various types of enameled conductors,
or over other insulations.
Applications: All types
of electromagnetic coils for motors & controls, as well as
a wide variety of other applications. Particularly suitable for
harsh mechanical environments due to abrasion/vibration resistance
and ability to bond well with various resins.
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Polyimide
Taped
Trade names:
Kapton, Apical
Temperature Rating: 220C
Relative
Dielectric Strength: 2500 Volts
NEMA Specifications: MW-45C, MW-46C |
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Description: Polyimide film
tape covering
Applications: All types
of electromagnetic coils for motors & controls, as well as
a wide variety of other applications. Particularly suitable for
high temperature and high electrical stress environments, such
as in traction motor applications. Available in types FN, CR (Corona
Resistant)
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