/images/buttons/swirl_60.jpg/images/southwire_100x70.jpgKeeping O’Hare Cool with CAMVkeeping-ohare-cool-with-camv.htmCompact CAMV architecture provides cost-saving power distribution
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Keeping O’Hare Cool with CAMV

Compact CAMV architecture provides cost-saving power distribution

When Chicago’s O’Hare airport needed to upgrade the control systems for the huge facility’s complex HVAC equipment, planners faced a power distribution problem.

Southwire created a uniquely designed version of their Covered Aerial MV (CAMV) system.  This provided a cost-controlling solution that allowed the HVAC systems to keep operating during the major changes to the underground HVAC power distribution system.  Southwire’s solution fulfilled project engineers’ need for an economical temporary power feed that could maintain service to the HVAC equipment without expensive underground work.

“O’Hare needed a great deal of 5 kV power in a 390-foot run,” says Joe McAuliffe, Southwire senior product engineer. “The Southwire solution was to hang UL-rated cables from standard CAMV spacer hardware, which normally carries conductors that are not UL-rated.”

The UL-rated cable can enter buildings and go directly into cable trays without expensive termination structures. The CAMV spacer hardware allows multiple circuits on a single pole, delivering high power density in the overhead distribution line. This unique combination from Southwire delivered significant cost savings compared to underground alternatives.

Southwire’s broad product line provided the solution

The cable that solved the problem was a Southwire UL-rated 750 kcmil aluminum-conductor non-shielded MV 90 cable. A series of 50-foot high poles carry two circuits. Each circuit uses two 750 kcmil conductors per phase. The CAMV architecture lets all 12 conductors hang from two cross-arms on each pole. Each group of three conductors and their spacer hardware are supported on an Alumoweld-Aluminum messenger.

Southwire’s broad line of available cable constructions along with inovative ideas from the sales group and customer let Southwire engineers pair exactly the right conductor for the application with the CAMV hardware that keeps the cable system compact. “Cable availability and the ability to keep the circuits compact and out of the way of the construction project were the keys to the end-to-end solution,” says McAuliffe.