|
29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,
4 @- k- A3 R0 u3 Q% k9 _1 uor have a sufficient number of layers, to withstand the electrical stresses that can be expected. I9 _+ K" j- I
during the use of the appliance.
2 R+ R/ s |9 O/ F CCompliance is checked4 B; n$ Z/ [ T7 g* {
– by measurement, in accordance with 29.3.1, or9 B- P1 x% l* @7 I4 T2 w
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more
4 }0 [6 [- Z8 E9 m; R+ B9 sthan one separate layer, other than natural mica or similar flaky material, or
6 Y7 F' y( D `$ V b. E– by an assessment of the thermal quality of the material combined with an electric strength4 k4 ? B& u' W* k
test, in accordance with 29.3.3 and for accessible parts of reinforced insulation
" q% o0 N7 c: G2 P p" Pconsisting of a single layer, by measurement in accordance with 29.3.4, or |
|