Division Power equivalent of battery operated active nozzles (NP)

The general equation for the average power equivalent of battery operated active nozzles NP in W, applicable for carpet, hard floor and general purpose vacuum cleaners with the appropriate suffixes, is:

where:

• E is the electricity consumption in Wh at an accuracy of 3 decimal places of the battery operated active nozzle of the vacuum cleaner necessary to return the initially fully charged battery to its originally fully charged state after a cleaning cycle;

• tbat is the total time in hours, at an accuracy of 4 decimal places, in a cleaning cycle in which the battery operated active nozzle of the vacuum cleaner is activated, in accordance with manufacturer’s instructions;

In case the vacuum cleaner is not equipped with battery operated active nozzles the value of NP equals zero.

For the hard floor tests the suffix hf and parameter names NP_hf, E_hf, tbat_hf shall be used in the above equation. For the carpet tests the suffix c and parameter names NP_c, E_c, tbat_c shall be used in the above equation. For each of the cleaning cycles, values of E_hf, tbat_hf and/or E_c, tbat_c , as applicable, shall be included in the technical documentation.