Feedthrough and Standoff Insulators

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Feedthrough insulators are designed for either cabinet or building wall mounting, and are fabricated of melamine and Lexan polycarbonate resin. Both materials are very rugged and have exceptional RF properties. Melamine feedthrough insulators are flat plates that can be supplied to large sizes. Lexan units are fabricated as a machined insulator with deep grooves to increase arc path length. For high RF voltage applications, the two insulators are frequently combined for maximum power handling capability. Traditional steatite ceramic feedthrough insulators are also available.

Standoff insulators are manufactured in several standard lengths and diameters, and are supplied in a choice of Lexan, ceramic, or by special order Lexan/ceramic composite.

Composite Lexan/ceramic insulators are a proprietary LBA development which combines the best features of both insulation systems into a superior high voltage insulator. In these components, a ceramic insulator is fixed with epoxy into a Lexan base. Full advantage is made of the anti-tracking properties of the ceramic, while the slight flexibility of the Lexan prevents fracture of the ceramic insulator. This insulator may be used in the most critical applications.

Lexan insulators are recommended for general-purpose use. These heavy-duty insulators are furnished with brass thread inserts to sustain repeated connection stresses and to reduce voltage gradients at the screw.

Lexan insulators are very durable, and have the advantage over traditional ceramic insulators of not cracking under stress.

Custom standoff insulators are available to six feet long and two inches diameter. Corona rings, termination assemblies, and other accessories are available.

Standard Standoff Insulators

The following lengths are available for 3/4" (19mm), 1" (25.4mm), and 1 1/4"(32mm) diameters:

CERAMIC	LEXAN
1 1/4" (25mm) 2" (50mm) 3" (75mm) 4" (100mm) 5" (125mm) 6" (150mm) 10" (250mm) 14" (350mm) 20" (500mm)	1 1/2" (25mm) 2" (50mm) 3" (75mm) 4" (100mm) 5" (125mm) 6" (150mm) 10" (250mm) 14" (350mm) 20" (500mm)

*Specifications subject to change without notice.

For information on Tower Insulators, click here.

For Quotation or Assistance call 800-522-4464 or E-Mail LBA Technology, Inc. at

3400 Tupper Drive (27834), P.O. Box 8026
Greenville, North Carolina 27835
800-522-4464 / 252-757-0279 / Fax 252-752-9155
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