|
fuse comply with IEC 60127 shall subject to the subclause 19.12. there is a current requirment. (if ok, no other additional tests needed)
% H5 j3 e9 T0 ]% V9 y& aand other components operated(break), can consider to be an intentionally weak part.
. i( X/ y4 Y% A, [" w- q% ^6 Jwhen this weak part are broken to comply with this standard, and it shall be become permanently open-circuit." T: A( v+ z, Z( X
this test shall repeat on second sample, this test shall also statisfactorily completed. 5 b$ h, l* i- ?7 `7 Z+ c
+ J+ y4 d2 [, V8 H
that means you only need to test two times total. - D9 J- B M- p( }1 g0 Q8 T3 r+ L
* T; D, g S0 B2 `but the protected device in the fixed wiring does not provide the necessary protection.8 n ^% Q) T' V8 D O3 ]6 e+ w7 z
4 i* l8 n, Y0 y+ ]! W! ayou can read the clause 19 of iec 335-1 |
|