Norplex-Micarta RT500M Shields Wires and Workers During Electrical Repairs

August 16, 2007

POSTVILLE, IA - Norplex-Micarta, the leading manufacturer of high performance thermoset composite materials and tubes, was recently commissioned by a prominent electric company to produce an electrical shielding unit from their RT500M convolute tubing material. The Norplex-Micarta RT500M tubing is cut in half length-wise and placed over underground electric wires to protect them from forceful impacts made by sledge and jack hammers during repairs. In addition, the thermoset material provides excellent electrical insulation, protecting service engineers from possible electric shock.

Subterranean wires are encased in concrete to offer protection from moisture and extreme temperature fluctuations. When repairs are required, the RT500M tubing is slipped over wires after a small opening in the concrete casing is created. When the job is finished, the tubing is removed and stored in the repair truck for use on the next job. The shielding units range from a ¼-inch to a ½-inch-thickness.

RT500M is a glass-epoxy convolute tube produced from medium glass fabric reinforcement. The reinforcement in this material is E-glass, a low-alkali borosilicate glass with excellent electrical and mechanical properties. E-glass comes in the form of an even-weave substrate, providing enough reinforcement to handle force in any direction applied to it.

RT500M can be manufactured in standard lengths of 36" and 48" (914mm - 1,219mm) with inside diameters ranging from 0.750" - 48" (19.1mm - 1,219mm), outside diameters ranging from 0.875" - 50" (22.3mm - 1,270mm), and wall thickness ranging from 0.062" - 1" (1.57mm - 25.4mm). RT500M meets the requirements of MIL-I-24768/2, Type GEE.

About Norplex-Micarta

Norplex-Micarta is the leading manufacturer of high performance thermoset composites. Norplex-Micarta's vast product line serves power generation, military/aerospace, oil & gas, medical devices, electrical devices, electronics assembly, construction, heavy industry, and transportation markets throughout Europe, Asia/Pacific, and The Americas. Norplex-Micarta is located at:
665 Lybrand Street
Postville, IA 52162
Tel: 563-864-7321
Fax: 563-864-4231

For more editorial information, contact:
Maura Gotha Pollister, Executive Vice President
360 Merrimack Street, Bldg. 5, 3rd Floor
Lawrence, MA 01843 USA
TEL: +1 978-794-5441
FAX: +1 978-688-8418

For more technical information, contact:
Alan Johnson, Director of Business Development
665 Lybrand Street
Postville, IA 52162 USA
TEL: +1 563-864-4275
FAX: +1 563-864-4231

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