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clause 4.7 有提到
- a! U/ j' \* E8 p9 M& BExamples of methods deemed efficient to prevent a wire from becoming detached are:; @( y v& ]9 Q- C0 v" R# q
a) wires are retained by a cord anchorage adjacent to the terminals;
! {$ J. L1 X3 N$ _, P- r2 H6 W- Rb) conductor is clamped by a spring type screwless terminal;8 v4 u [: t5 E8 T! @$ w1 T
c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is
* c0 s! ]; A" `likely to occur as a result of vibration;
5 b2 B0 B! \, g" B& s8 |. zd) wires are twisted together in a reliable manner;
Z: K3 E* B \ y9 D8 X4 ~% le) wires are fastened together by insulation tape, sleeves, or the like;8 a' R `2 k6 \! {0 K0 f* Z
f) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter
H9 y# ^. m1 R w/ xslightly greater than the conductor;) a2 Z5 ?& m/ [! s1 `2 p8 `3 C) ?
g) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);
A3 q- }3 _" z% hh) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19)./ N2 k" M4 q3 L+ T6 k1 r) n
The methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible. J/ o; F$ k1 X
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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
