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Portal slewing electric

Purely electrical portal crane

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Purely electrical portal crane

The new LPS 420 E is the latest extension of the Liebherr mobile harbour crane product range. The newly designed machine is a purely electric driven portal crane. It is a universal all-rounder and a key asset for handling every type of cargo, from containers to bulk, general cargo and heavy lifts up to 124 t. The forward-looking machine is designed for ports and terminals with an electrical infrastructure.

    
        
LPS 420 E 48 m grab

  • High performance

    With a turnover of up to 1,200 tonnes per hour, the new Liebherr E-crane exceeds the average turnover of comparable electric driven cranes in the market.

  • Universal all-rounder

    The LPS 420 E is a key asset for handling every type of cargo, from containers to bulk, general cargo and heavy lifts up to 124 t.

  • Electric driven

    All crane movements like luffing, hoisting, slewing and travelling are done by electric motors.

  • Power supply

    The LPS 420 E is especially optimised for terminals with a power supply ranging from 380 V to 460 V.

        
    

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Latest technology

Electric winch motors with precise and continuous drive characteristics
Electric winch motors with precise and continuous drive characteristics

Liebherr frequency converter

The LPS 420 E is especially optimised for terminals with a power supply ranging from 380 V to 460 V. 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 Liebherr ship-to-shore gantry cranes and material handlers.

Energy storage unit LiDURO
Energy storage unit LiDURO

Energy storage units

As an additional benefit, high power 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 200 kW of power within 15 seconds.

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From maximum load to maximum speed

Higher bulk turnover than comparable electrical driven cranes in the market
Higher bulk turnover than comparable electrical driven cranes in the market

Bulk turnover - up to 1,200 tonnes per hour

The LPS 420 E raises the bar in terms of electrical driven bulk handling performance. With a turnover of up to 1,200 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 48 metres, ships with a size of up to Panamax class can be served. This makes the crane the ideal electrical driven solution for bulk handling – local emission-free.

The LPS 420 E impresses with some decisive technical advantages that will please every customer. 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 exchanger are installed on top of the slewing platform. According to 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
The LPS 420 E is an ideal solution for terminals where every container counts

Container handling - up to 30 cycles per hour

Productivity is a decisive factor in modern container handling. The LPS 420 E is an ideal solution for terminals where every container counts. With up to 30 cycles per hour, the LPS 420 E is the perfect solution when it comes to container handling performance. The crane can be fitted with various types of fixed or telescopic spreaders. Ship sizes up to post-Panamax class are ideally servable for the LPS 420 E.

The operator of the new LPS 420 E can rely on very dynamic electric motors. Furthermore, the low moment of inertia ensures a fast response of the motor for precise drive characteristics. Due to the high motor speed spread no gear shifting between normal and heavy load is required. This allows for uninterruptible power transmission from maximum load to maximum speed. Another well welcome side effect is that the noise emission of the planetary gear box is low.
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