Effective 1/1/2022, Starline will no longer be manufacturing new systems for USST; including Span-Guard, Tri-Bar/Four-Bar, PowerGlide and TightWire. They will continue to offer accessories and parts for existing systems through 2022.
Span-Guard was the first continuous, joint-free electric conductor bar introduced. Span-Guard is uniquely designed with no electric joints in the solid copper conductor. And the flexible fully-enclosed insulated cover provides the most reliable, highest quality conductor system on the market. This joint-less conductor is ideal for cranes, hoists, and moving equipment where problems and downtime cannot be tolerated.
Tri-Bar/Four-Bar provides a variety of electric power system design solutions for mobile electrification. The trolley systems can extend for hundreds of feet using continuous copper conductors, which are the ideal medium for communication and control signals for cranes and hoists. Our Tri-Bar/Four-Bar trolley systems can be factory shaped to your specifications into loops, ovals, circles, and multi-curved monorail tracks, and modified with switches, isolated zones, and trolleys that can be disengaged. These custom systems are shipped for easy assembly and installations.
PowerGlide is a patented conductor bar system with retractable wheels that allows you to insert or remove the trolley anywhere along the conductor run. No more trap doors at the end of the electrical conductor run, or bending the bottom of the box track and forcing the trolley out. Just retract the trolley wheels for easy removal and inspection!
PowerGlide comes with 4 electrical conductors preassembled in a one-piece PVC insulator which means no joints to cause arcing and damage to the electrical conductors.
The 90 amp rating means that PowerGlide will fit most cranes, hoists and monorails while still keeping a compact, lightweight design for easy installation. The aluminum housing and optional closure strip help to keep dirt and grime from any environment out of the power path.
TightWire is a continuous joint-free electrical conductor system that ships on a roll. TightWire uses a single piece insulator containing 4 solid copper conductors, and is compact and light weight which makes it fast and easy to install. Spring tension is applied from the end assemblies which keep the system strong and straight and only requires 10 feet spacing between hangers. Fewer supports translate into quicker installation time. No expansion joints required.
TightWire’s conductors are preassembled in a one-piece PVC insulator which means no joints to cause arcing and electrical damage. The 90 amp size can be used for most crane needs.