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clause 4.7 有提到 " D& X" f8 N% B, j! y1 d# P+ r
Examples of methods deemed efficient to prevent a wire from becoming detached are:
- F$ q6 g9 s3 \1 d+ Ca) wires are retained by a cord anchorage adjacent to the terminals;0 X6 a9 T# t+ B7 M
b) conductor is clamped by a spring type screwless terminal;
8 |& g z0 ^! d7 _$ ]c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is
) R8 [% y4 V% A4 ^, Blikely to occur as a result of vibration;, b# E' ?' b" R! _* |/ U
d) wires are twisted together in a reliable manner; N/ \! m# _: x9 ` T |
e) wires are fastened together by insulation tape, sleeves, or the like;* ?1 k( ~$ i% e1 r8 O: e
f) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter8 }; B) x) Y* W: h2 P
slightly greater than the conductor;6 \3 B$ v4 l% G2 {1 }4 L# ~
g) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);& X( Q2 }2 z1 i6 U9 k/ l+ m$ c" T
h) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).
" ^# X9 A, s% ], L# T+ Z) V, |& JThe methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible
3 B" |4 p% N0 ^1 k' J+ ]; Scords. |
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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