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clause 4.7 有提到
; C7 e! `2 \( `; r, D( ]4 V( qExamples of methods deemed efficient to prevent a wire from becoming detached are:% B/ j- u% N1 _: T
a) wires are retained by a cord anchorage adjacent to the terminals;
( c' a1 M) c, z+ l# ^% z' Db) conductor is clamped by a spring type screwless terminal;, E! o( t, T5 e( k, ?$ v
c) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is: |% ^: K A7 x# v, s* C' x6 O+ F
likely to occur as a result of vibration;
! }: ]8 _. M% F. G3 A% I; l! Kd) wires are twisted together in a reliable manner;3 Z& d& V8 c& \. N0 y
e) wires are fastened together by insulation tape, sleeves, or the like;
) Q" C7 `0 q5 \/ v4 l5 C6 Hf) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter0 }; Q, d( T- V7 j5 @
slightly greater than the conductor;
% o3 a3 f P$ \# D; H% ag) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);
& \0 a" T; ]5 vh) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).) x- z- h1 B2 ]- J& T( h; U5 E* b
The methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible
) S u& v$ p( B R8 r5 xcords. |
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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
