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13.2.1 Compliance is checked by the following test:1 _( a/ F( |1 t
The test is not made on parts of ceramic material or on insulation of wiring.0 q! t$ A. {, w; w
The test shall be made in a heating cabinet having a temperature 25 °C ± 5 °C in excess of the
# ~+ ?1 z) n' v! Woperating temperature of the relevant part determined during the temperature test (normal
# N9 u& s) B3 l6 z% x: ]. Hoperation) of Section 12, with a minimum temperature of 125 °C when parts retaining currentcarrying( R7 m6 L7 H+ c6 u2 o0 p8 D' o
parts or SELV parts in position are tested, and 75 °C for other parts.
# P. X* G2 N6 f: n9 tThe surface of the part to be tested shall be placed in the horizontal position and a steel ball of7 j+ A5 ~6 c+ ^6 w! C7 D
5 mm diameter pressed against this surface with a force of 20 N. A suitable apparatus for this( [7 y! x, L2 }: D: j
test is shown in Figure 10. If the surface under test bends, the part where the ball presses/ w" R5 X) m2 c7 W+ O! p
should be supported.
9 _" N3 U8 \- n4 T; V$ iAfter 1 h, the ball shall be removed from the sample, and the sample shall be cooled by" i+ W! x4 h1 Z4 Z
immersion in cold water for 10 s. The diameter of the impression shall be measured and shall/ y k; ^5 _+ ?) [! y- D# n
not exceed 2 mm. |
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