Old Dutch-series

OD-4 – 1.46 kW
OD-4-E – 4.60 kW
OD-7 – 2.32 kW
OD-7-E – 8.10 kW

2D – 1.8 kW
2D-E – 5.0 kW
3D – 1.46 kW
3D-E – 4.60 kW