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clause 4.7 有提到 # D, b' O4 Z' c* ]. x
Examples of methods deemed efficient to prevent a wire from becoming detached are:
* a2 _% n( k) }a) wires are retained by a cord anchorage adjacent to the terminals;
, g! b& p1 y& V O! m: r- G. @6 jb) conductor is clamped by a spring type screwless terminal;. \ P0 c, F, ]$ O p5 }0 }
c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is
! V: S2 `2 l! Nlikely to occur as a result of vibration;' c+ d# @1 T q" w* E
d) wires are twisted together in a reliable manner;( L! C1 v# O5 f
e) wires are fastened together by insulation tape, sleeves, or the like;6 D4 x" o9 Q- R8 a/ I' U3 S
f) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter
2 E' S( Q' K0 K* c! Dslightly greater than the conductor;' ]$ T0 {% _) C O+ }2 ]
g) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);
: ~0 ]4 w$ m7 ]1 F: wh) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).
$ E& q5 \! J8 Z& qThe methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible& w5 ]) y' E9 E6 I, Q, q
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