Southwire C7 Manual For Installation And Use

Guide for Installation and Use of Southwire C
Introduction
Southwire's C 7 overhead conductor continues a Southwire tradition of overhead conductors
designed with durability and reliability as the first priorities. Southwire's HS285 overhead
conductor introduced an ultra-high-strength steel core as a means to improve the sag
performance of conductors with steel cores. Southwire's C
targeted at high reliability and long service life.
Similar to the case with steel cores, individual carbon fiber composite strands are assembled to
offer a core that is more flexible than a large monolithic core. A multi-strand core has the
significant advantage of structural redundancy which protects the conductor from catastrophic
failure.
7
C overhead conductor can be manufactured with a choice of two types of electrical grade
aluminum. C 7 conductor is available with fully-annealed 1350 O-temper electrical-grade
aluminum. This conductor is designated Aluminum Conductor Composite Supported (ACCS).
ACCS is the best choice for minimizing thermal sag, but may not be suitable for districts with
heavy ice and/or storm loads. C
aluminum-zirconium alloy. This conductor is designated as (Z) Thermal Aluminum Alloy
Conductor Composite Reinforced (ZTACCR). ZTACCR has additional strength and elastic
modulus from the aluminum alloy for handling heavy loads with minimal sag.
C 7 conductor was designed with the crew in mind. Familiar tools, fittings and procedures
ensure that crews can be confident in the safety and reliability of the C
conductor is tough. The multi-strand core brings flexibility and avoids a single-point-of-failure.
C 7 core is stronger than any steel core and only 20% of the weight. The polymers used in C
core strands are used in the most demanding aerospace and chemical industry applications.
We can be confident that even chemically-aggressive outdoor environments will not degrade
the polymers in the C 7
It is, however, necessary to recognize that carbon fiber polymer composites are different from
metals and may require different handling. The following section contains all of the handling
Page 1 of 23
Overhead Conductor
7
conductor is also available with ZTAL high-temperature
core.
Guide for Installation and use of Southwire C
7 conductor family is similarly
7 conductor family. C
7 Overhead Conductor
7
7
7