Veghel-based Staad B.V., the official importer and dealer for the Doosan construction equipment range in central and southern Netherlands, has developed two electric machines based on original Doosan DX300LC-5 and DX19 models. The new DX300LC Electric 32.3 tonne crawler excavator and DX19 Electric 2.1 tonne mini-excavator are completely emission-free, but provide the same high productivity as that of the conventionally powered Doosan machines.
The DX300LC Electric is powered by a 145 kW electric motor and the system has a high voltage of 650V, resulting in fewer losses and more efficient battery use. Each battery pack has a capacity of 130 kWh and as the machine contains three exchangeable battery packs, there is a combined power of 390 kWh. This gives the DX300LC Electric a useful working time of 8 hours.
As the battery packs are exchangeable and the machine can work on a single pack, the DX300LC Electric can therefore be used all day on site. The exchangeable battery packs allow recharging wherever needed without the need to reposition the machine. Exchanging a battery pack takes no more time than topping up the fuel tank.
The DX19 Electric has a 15 kW electric motor, a system voltage of 350 V and an available battery capacity of 32 kWh. This is also a high voltage system resulting in fewer losses and more efficient battery use.
The battery can be charged via a Type II HV connector and the 6.6 kW on-board charger. This means the Doosan DX19 Electric can simply be recharged from a domestic power socket, in less than 12 hours. Faster charging is possible, but requires a higher rated 380 V power supply. The following charge times are possible: 3 hours @ 380 V / 63 A, 6 hours @ 380 V / 32 A or 12 hours @ 220 V / 16 A. With a fully charged battery, the machine can work for 8 hours.
At this point in time, the new electric excavators are only available in the Netherlands through Staad B.V.