Typical for oil lubrication unit for continuous operation is doubling of key components (power unit, filter, cooler, etc.). It can use reserve component if the function of key components fails. The aggregate is fitted with its own reservoir. Either the aggregate can be fitted with its own reservoir, or oil volume in lubricated machine (e.g. gearbox, bearing box) is used as an oil reservoir. Nominal dose of lubrication aggregates with reservoir is set to 0.5 – 600 dm³/min. Standard electric motors are 230/400V AC and 400/690V AC, for other voltages consult the supplier.