Liebherr have launched the new LPS 420 E, which is the latest extension of their mobile harbour crane product range and a newly designed machine that is a purely electric driven portal crane.

As the LPS 420 E is a member of the LHM series, it is also characterised by high modularity, and therefore, it is a universal all-rounder and a key asset for handling every type of cargo.

Equipped with two winches, each with a powerful 190kW electric motor, the LPS 420 E provides a maximum load capacity of up to 124 tonnes; therefore, the portal crane can be perfectly used for heavy break bulk, as well as project and general cargo.

The LPS 420 E is especially optimised for terminals with a power supply ranging from 380V to 460V. Thanks to the Liebherr active-front-end frequency converter, deviations in the voltage supply can be compensated easily for safe and stable operation.

Due to the critical conditions - like limited space and harsh environmental conditions, a liquid-cooled and highly efficient multi-drive frequency converter system was implemented. The frequency converters are Liebherr-built components, which have proven themselves in manufacturer's ship-to-shore gantry cranes and material handlers.

As an additional benefit, Liebherr energy storage units can be used to reduce the peak-load in the crane main power supply and to take advantage of regenerative energy within the system. The compact unit ensures a high power storage capacity, which enables the accumulation and supply of 200kW of power within 15 seconds.

The LPS 420 E raises the bar in terms of electrical driven bulk handling performance - with a turnover of up to 1200 tonnes per hour, the new Liebherr electric crane exceeds the average turnover of comparable electric driven cranes in the market.

With a maximum outreach of up to 48m, ships with a size of up to Panamax class can be served, which makes the crane the ideal electrical driven solution for bulk handling.

The main components of the E-drive are liquid cooled and the heat is dissipated by heat exchangers. The fully closed liquid cooling system in combination with the heat exchangers are installed on top of the slewing platform. Because of this, no overpressure unit is necessary to prevent dust coming inside the machinery house, which is a big benefit for cranes working in a dusty environment.

The LPS 420 E is an ideal solution for terminals where every container counts. With up to 30 cycles per house, the LPS 420 E is the perfect solution when it comes to container handling performance. Ship sizes up to post-Panamax class are ideally servable for the LPS 420 E.