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clause 4.7 有提到
4 C# a$ g! I. \0 `Examples of methods deemed efficient to prevent a wire from becoming detached are:. s+ M& U/ r2 w. y6 A3 P, E
a) wires are retained by a cord anchorage adjacent to the terminals;
3 D2 t2 G: T+ m' r+ _; u Pb) conductor is clamped by a spring type screwless terminal;! y! F. M4 |1 R: L& f( A7 c/ t
c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is
' ?5 ^6 A3 D: y0 z5 `) U8 y% _likely to occur as a result of vibration;
$ n+ S7 n; o {2 Fd) wires are twisted together in a reliable manner;
3 L6 `3 |5 q3 ^- q, Q( ye) wires are fastened together by insulation tape, sleeves, or the like;
. U5 O/ b# p) K' of) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter
2 z$ N, q3 f5 [8 Hslightly greater than the conductor;
# @( ?- H4 ]. H8 t( o7 ug) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19); _0 a+ ~8 l- u/ z+ P% h8 h
h) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).* j% m: y- i" q' \+ q) e# p
The methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible9 W* }) \: E3 [ E& N+ P4 o5 c
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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