Cable Tracker™

Description:

Photovoltaic modules are mounted on two suspended cables.  The Cable Tracker is oriented on a north-south axis and tracks east and west to follow the sun, and is best suited for large installations where a large site is available.  There are two models to choose from depending on location and power requirements using either active tracking or passive tracking.

Cable Tracker Advantages:

• Minimal site grading and clearing.  Fixed piers are located every 50 feet.

• Minimal structures planted in the ground allow for easy site reclamation.

• Modules are low to the ground (about 5 feet), allowing easy module installation and wiring.

• Good for high wind areas since modules are low to the ground. The Cable Tracker is CA certified for 90 mph wind conditions.

• Less expensive than conventional trackers.

Modules:

All PV modules – equal to, or less than, 66” in length – can be mounted. (Zomeworks needs to know the exact modules to correctly position mounting holes.)

Passive Tracking:

Cable Tracker’s passive tracking uses the shifting weight of a liquid refrigerant and a unique shadow plate to keep the array of modules pointed at the sun.  This tracking mechanism is similar to that used by the Track Rack™.  Like the Track Rack this works well for remote users who value reliability.

Active Tracking:

Cable Tracker’s active tracking system uses a controller and one or more actuators to keep the module array targeting the sun.  The active tracking is more accurate---but more expensive---than passive tracking and requires some electronics maintenance.  The active system also needs a minimal power source for the controller and actuators.

Model CT-67-A:

The modules on the CT-67-A are north-south adjustable to better track the sun year ‘round.  The number of modules in a 50’ span depends on the array’s latitude.  This model is good for applications where winter power is essential.

Model CT-67-F:

The model CT-67-F is designed for low latitude locations or where summer power is the primary need.  The modules are laid flat on the cables allowing more modules per 50’ span.  This model is also quite a bit less expensive and approaches the cost of fixed racks.

Spans:

There is no minimum span, but spans less than 50’ become cost prohibitive.  The maximum span is 200’.  For the CT-67-F model where the modules are laid flat, the 50’ spans from end to intermediate towers allows for 42’ of modules including 2” for space between modules while the 50’ spans from intermediate to intermediate allow for 47’ of module space.  For the CT-67-A model the available module space is less and dependent on the maximum north-south tilt angle.  Multiple spans can be located parallel to each other 20’ apart on center.

Installation:

The Cable Tracker is supported by 5” Schedule 40 steel piers at each end and at intermediate points (every 50’).  In addition, each end requires an anchor.  Depending on soil conditions, piers can be driven, screwed (helical piers) or set in concrete.  End piers are set at 67º while intermediate piers are set at 90º and 5’ above existing ground.  Zomeworks end-arm and intermediate-arm assemblies sit on top of the piers.  The customer is responsible for piers and anchors and their proper installation.  Pier depth should be determined by an engineer familiar with local soil conditions.

The primary module cables are 3/8” galvanized steel.  Two cables measuring 50’, plus the length of the span, are provided.  Two 1” x 12” turnbuckles are provided to apply final tension to the customer-provided earth anchors.

Patents:

Patents for the improvements to the original Cable Tracker have been applied for.

Buying Information

To purchase this or for more information to assist in your purchasing decision, simply call Zomeworks Corporation's customer service at the toll free number below.  We can accept your payment directly over the phone and we accept both Visa and MasterCard.

(solar modules not included)