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60598里的规定:6 c2 H- u, D: J
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A current of at least 10 A, derived from a source with a no-load voltage not exceeding 12 V,
9 a) y: A( t! \4 Xshall be passed between the earthing terminal or earthing contact and each of the accessible& u O7 z1 j% x* L% N$ B
metal parts in turn.# |) S+ R; l8 B& R
: h- M8 z1 W# S6 U+ u- J6 K/ jThe voltage drop between the earthing terminal or earthing contact and the accessible metal1 l0 \$ w6 b: l3 I! z8 \; C! |
part shall be measured and the resistance calculated from the current and the voltage drop. In( g/ C3 U/ P& r, x0 u' g3 ^
no case shall the resistance exceed 0,5 Ω. When type testing, the current shall be applied for a
/ F# N9 {# ^) b" Q5 q0 D4 n& c9 xperiod of at least 1 min. w. x: U" M5 w8 H+ r* a0 P! M3 a, e
* {9 ?+ o8 k {; n- P8 v) n
NOTE :In the case of a luminaire with a non-detachable flexible cable for the supply connection, the earthing contact is at the plug or supply end of the flexible cable or cord. |
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