Crane fuel saving and RTG electrification

Reduce RTG fuel consumption by up to 95% with electrification

Electrification of RTGs reduces emissions and can reduce fuel costs by as much as 95 percent. The return on investment can be less than two years.

We are able to supply a turnkey electrification solution for all brands of RTG cranes. Kalmar experts work with you to specify a solution that meets your operational needs and ensures the optimum return on investment. Working with Kalmar means you can take advantage of the best technology and solutions on the market. We are completely independent and can advise on the electrification of all brands of equipment. A turnkey project includes the design and supply of power grid connections, substations, a conductor-bar system, or cable-reel integration, taking into account the full chain of interacting components. The two main types of E-RTG conversions are cable reel and conductor bar. Cable-reel conversion: In cable-reel (400 V–13 kV) designs, a power transformer is usually installed on the crane to reduce the substation voltage to the E-RTG motor supply voltage. The power feeding point can be at the end or center of the container stack, or a combination of the two. For crane retrofitting, the diesel generator can either remain in place or be removed. If it is removed, block changes and driving to maintenance areas require an auxiliary genset or batteries. Conductor-bar solution: Busbar designs (400–1,000 V) require the installation of a steel support conductor bar assembly along each of the terminal’s stacking areas. Low voltage cables feed power from the substations to the busbars. A power cable can be manually plugged into a collector trolley, which is pulled along the busbar when an RTG is operating. Alternatively, an automatic arm-collector assembly is integrated into the RTG. This arrangement eliminates the need for human intervention and therefore enables faster stack changes.