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本帖最后由 qij1979 于 2018-4-8 15:23 编辑
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+ [7 S8 m$ B4 ]5.3.1.2 0 T2 t- |4 p! o2 K+ \( k
Replace the first dashed list item with the following new text:8 N$ x4 a# p* o# A
– the minimum cross-sectional area may be less than 0,4 mm2 if overheating of the wire : a- N2 {' Z6 M1 S
conductor insulation is prevented under normal and short circuit operating conditions in
/ @$ }/ h, f, h& {& Vaccordance with the tests of 5.4; ' p6 i' r# U+ Q' i! [* W
Add, at the end of 5.3.7, the following new Clause 5.4:
& Z+ ?2 g0 k& a* ]5.4 Test to determine suitability of conductors having a reduced cross-sectional area
* C7 q3 I4 M. K; e& c' QTo determine suitability of conductors having a reduced cross-sectional area, connected to% b9 H) ]- g+ I+ W# P; [" K
controlgear that limits the current to 2 A, the following test shall be conducted: # p7 z8 H7 l; t
a) disconnect the conductors being evaluated as close as practical to the lights source in the
$ i3 H4 }2 D% k( |luminaire and attach a resistive load using minimum 1 mm2 cross section test leads; these. o( Z# l9 q# b) c" ^% v) ^! h! O
leads shall be routed out of the luminaire in a manner that will have the least impact on6 R: W6 {3 @" a9 ^- e1 n
temperatures within the luminaire;
( s! I& o2 p) D3 @b) adjust the resistive load to measure the maximum output current of the control gear,! S& s! v- r7 B( F
maximum measured current shall not exceed 2,5 A;
* T" q8 N2 e* k. uc) with the resistive load set to draw maximum output current, conduct the thermal test in2 n) q+ J+ |4 B2 D) l
accordance with 12.4. (see Figure 33); - H7 q6 q3 D, F% L
d) the resistive load is then set to 0 Ω (short circuit) and the thermal test repeated in) J+ p, T3 t6 e& b, N
accordance with 12.4 (see Figure 33);
( z3 M) v" a4 b3 |0 X' lIn no case shall the temperature of the luminaire wiring insulation exceed the limits stated in) A8 Z# } k% C- x: f4 s# y, d( C
Table 12.2 nor shall there be any indication of damage to luminaire wiring. 2 p( o6 X+ P) I% V+ d) X
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