I work for a lab device manufacturing firm. During the testing of our electronic pipette according to IEC 61010-1,the safety test lab asked why it did not have the symbol indicating double insulation.
Our pipette is powered by a rechargeable battery and the DC two-pin adapter to charge the battery is provided within the box.
I know a bit about the classes of electrical products like Class I, Class II, and Class III, but I am confused about why, if the device is powered by a rechargeable battery and the DC adapter provided with the device is a two-pin adapter, it would be mandatory for the device to have double or reinforced insulation?
If the device has reinforced insulation then do we also have to place a double insulation symbol on the product? Should there be a double insulation symbol on the product itself of or is it allowed to place it on the packaging box?
Can anyone provide clarity on this topic?