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29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,
$ d1 S1 B4 F/ q/ ~7 t/ ~" Lor have a sufficient number of layers, to withstand the electrical stresses that can be expected
/ y7 ^; Y* X+ x( r4 iduring the use of the appliance.
: Y& J9 j' l, E+ ^Compliance is checked
/ s# _; {: j1 u– by measurement, in accordance with 29.3.1, or) t. j- S6 A5 L( r, n& n
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more
& E, Q6 X, F p& Sthan one separate layer, other than natural mica or similar flaky material, or0 Q x: ^6 n5 b4 Z9 _
– by an assessment of the thermal quality of the material combined with an electric strength3 k' Y8 g3 L1 w/ z/ B i/ {
test, in accordance with 29.3.3 and for accessible parts of reinforced insulation
4 j1 s$ ]) z& W/ c# uconsisting of a single layer, by measurement in accordance with 29.3.4, or |
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