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ubber-tyred gantry (RTG) cranes are the main solution for moving and stacking containers in container terminal yards worldwide. Many of them still run on diesel fuel, which is constantly rising in price, not to mention its impact on the environment. Therefore, the RTG HOHFWULÀFDWLRQLVEHFRPLQJDPRUHDQG more attractive solution to terminal operators. (OHFWULÀHG57*VH[SHULHQFHOHVV down time, there is no need for refuelling and the diesel generator needs less maintenance. In short, e-RTGs are more HIÀFLHQW E-RTGs run on diesel only around 10 percent of the time – required mainly for block changes or maintenance. This reduces CO2 emissions by around a half,


Based on interview of Ernesto Boado, working at customer-facing frontline as Project Manager, Kalmar Crane Services, Cargotec Iberia S.A.

Complete installation After all the electrical and mechanical work RQFUDQHVKDVÄşQLVKHG including installation of any extra components necessary for HOHFWULÄşFDWLRQWKHFUDQH can be commissioned.

while noise levels go down and air quality improves. There are two main types of e-RTG solutions: bus bar and cable reel. Terminal layout, operational type and number of cranes all determine the best choice for the customer. A preliminary site inspection is WKHEHVWZD\WRĂ€QGUHTXLUHGSURMHFW information, even in cases where the port has a preferred solution for RTG HOHFWULĂ€FDWLRQ With good planning, terminal operations can continue as normal WKURXJKRXWWKHHOHFWULĂ€FDWLRQSURFHVV

Container terminals such as Evyapport, Yilport and Marport, with an average of 2,000 lineal metres of bus bar conductor rails and 15 HOHFWULĺHG57*VDUHHVWLPDWHG to repay the customer’s investment in just two years.

Commissioning A Kalmar commissioning engineer checks that all the installations follow the agreed GHVLJQV1HZPRGLÄşHG software is uploaded and operation of the QRZUHWURÄşWWHGH57* crane checked.

Client approval BDQSHjB@SDR The customer tests the functionality of the e-RTGs and signs off on the project after successful tests.

Tech know-how Bus bar (400-440 Volts) requires installation of a steel supportconductor bar assembly all along the stacking area of the terminal. Low voltage cables feed power to bus bars from port substations. A power cable can be manually plugged into a collector trolley that is pulled along the bus bar when an RTG operates. Or an automatic arm-collector assembly is implemented on the existing equipment. Here the collector trolley is automatically connected to the bus bar, enabling fast stack changes. In cable reel (400–440V up to 13kV) designs a power transformer is installed on the crane to reduce the power grid voltage to the e-RTG motor supply voltage. The power feeding point is either at the end or centre of the blocks. For crane QDSQNkSSHMF the diesel generator can stay or it can be removed. If removed, block changes and driving to maintenance areas require an auxiliary genset.

Project closed Overall, the project takes around six to eight months, depending on the number of RTGs, the layout of the port and agreed schedule, among other things.

Guarantee period Normally one year. It covers the scope of Kalmar’s PRGLĺFDWLRQZRUN done during the HOHFWULĺFDWLRQRI RTGs.



Kalmar Global 1/2013  

Welcome to Kalmar Global,Kalmar's new customer magazine. In this first issue: launching the Gloria reachstacker and Kalmar Care service cont...

Kalmar Global 1/2013  

Welcome to Kalmar Global,Kalmar's new customer magazine. In this first issue: launching the Gloria reachstacker and Kalmar Care service cont...