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clause 4.7 有提到
' O8 e2 n k, l% Z9 qExamples of methods deemed efficient to prevent a wire from becoming detached are:
5 R$ P! r7 ?+ a/ a3 r: ]4 j, Pa) wires are retained by a cord anchorage adjacent to the terminals;
. a# A6 o$ w$ C. s0 v) i5 A" _7 Hb) conductor is clamped by a spring type screwless terminal;: ~* M7 n% }8 R/ {3 q, X7 E) U
c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is3 T0 i# ?8 b1 G+ o3 m. V* |
likely to occur as a result of vibration;4 V, `: ^" O: S6 o+ x0 p
d) wires are twisted together in a reliable manner;$ }' |+ o2 E2 `9 c, T* b6 d5 t! B/ }! j
e) wires are fastened together by insulation tape, sleeves, or the like;
. x/ ~+ `: n% R1 i! rf) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter9 T6 k% L* k! ?* i3 O4 I/ r% z$ J# q8 I& r
slightly greater than the conductor;6 D; b: k; l2 h# U
g) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);
% ^/ k! T) w# R3 G+ D5 Z5 Ih) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).' Q# `8 i1 `- k+ h) K$ M, v$ S
The methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible
2 [, F8 W$ A; }+ J2 K" `cords. |
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发表于 2009-6-2 17:07
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E"才有被要求到勾焊.
发表于 2009-6-6 13:33