Page 18 of 23 Guide for Installation and use of Southwire C
7
Overhead Conductor
Formed Wire Hardware (available from PLP
®
)
PLP has qualified their Thermolign® formed-wire fittings on ZTACCR versions of C
7
conductor.
Formed-wire fittings are slightly more labor-intensive, but offer the advantage of tool-free
installation. Again, the fitting manufacturer has installation guides on their web site, and it is
critical to follow their instructions to ensure long and reliable service life.
Figure 2120: PLP Thermolign Dead End Assembly
Figure 22: PLP Thermolign Splice Assembly
Suspension Units
A cushioned suspension system is required for C
7
conductor. A bolted metal clamp has not
been qualified and is therefore not acceptable. Rubber-lined clamping systems avoid crushing
forces should clamp bolts be over-tightened. Rubber linings also help to prevent fatigue
damage from Aeolian vibration. The suspension system must be rated to handle temperatures
up to 225°C.
PLP and AFL have qualified their CGS® and HIBUS® suspension units on C
7
conductor. Where
operating conditions are extreme, there is an extra measure of protection offered by formed-
To Next Page
Loading...
