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要看灯串的具体情况而定。" L! K$ o+ U" P
60598-2-20 的20.10.1章节:
' d" x/ C/ K, j: V2 C5 T' wThe nominal cross-sectional area of the conductors shall be not less than one of the following
' P/ T& b( I' A* o! e* I- o& uvalues:- G8 ~2 {3 a7 Z( A5 s& Y; ^
a) 0,5 mm2 for ordinary lighting chains with E5 or E10 lampholders or other small5 ]9 y4 g4 t9 @. c, L- d
lampholders.
0 D3 N3 ]3 G2 N. Kb) 0,75 mm2 for other lighting chains with E5 or E10 lampholders or other small lampholders,
, m% e, q: L9 A4 _0 ^, Z& uand for lighting chains with E14, E27, B15 or B22 lampholders and fitted with seriesconnected/ s, B" Y+ |! d4 a+ U
lamps.
+ N$ J* _7 D" [5 e! W5 V) J* H% qc) 1,5 mm2 for lighting chains with E14, E27, B15 or B22 lampholders and fitted with parallel
# [- Z2 _- D# tconnected lamps.
2 b3 I2 R7 R3 \- y, zIf the maximum rated wattage of class III lighting chains and parts of chains supplied by& q) \( ]3 A" J4 U7 U+ V! @
SELV is less than 50 W then the conductors of the internal and external cables may have a( U; |6 y0 l" { C; y" J
cross-sectional area of 0,4 mm2 or less provided that the current-carrying capacity and the/ ]+ u4 e+ o& o5 F( f1 u- C! S
mechanical properties are adequate. If the maximum rated wattage exceeds 50 W, the cables: ]7 V7 \% N1 b% a4 i6 C& R
shall comply with 60227 IEC 42 (see asterisk above). If the wattage is less than 50 W the
) w2 n3 a$ `1 s( b1 ~insulation of the cables shall comply with the requirements of 5.3.1 of IEC 60598-1.& @4 ?* R: ]4 U# u
For sealed chains, the internal conductors may have a cross-sectional area of 0,4 mm2 or less
: y: U$ ^+ W* }+ h5 p: w6 [' Z3 Tprovided the current-carrying capacity and the mechanical properties are adequate. In addition,4 |% e5 b3 \! @" n2 W8 V
conductors without insulation are accepted provided adequate precautions have been taken to, b9 D! a8 R6 [* F
ensure maintenance of the minimum creepage distances and clearances and compliance with
, O5 A% d5 N5 }7 bthe requirements of 5.3.1 of IEC 60598-1.
4 @) C& X; h. `" k" bCompliance is checked by inspection, measurement |
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