|
|
60598里的规定:
) k" ~. K7 Y0 {
& \- U& c6 P4 t8 k" Y: o9 SA current of at least 10 A, derived from a source with a no-load voltage not exceeding 12 V,+ a8 i0 K& u1 b$ W( n
shall be passed between the earthing terminal or earthing contact and each of the accessible
: U8 }4 F$ c4 C+ @$ A. i6 H) R% U1 @4 [+ gmetal parts in turn.( w2 d2 r# R* P& C" G
7 y% Z2 E x; B, Z
The voltage drop between the earthing terminal or earthing contact and the accessible metal0 `5 G* {0 S; V5 G6 p1 T; n# F
part shall be measured and the resistance calculated from the current and the voltage drop. In. p! t1 ~' B8 [9 `
no case shall the resistance exceed 0,5 Ω. When type testing, the current shall be applied for a
; S. n3 m; N3 \+ Kperiod of at least 1 min.
& E! b' J# v$ ^: [) e5 P' h" D- w# c- N4 B- L1 O( ~6 q
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. |
|