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clause 4.7 有提到
; j# e: [# M! L. \$ E" D* ?Examples of methods deemed efficient to prevent a wire from becoming detached are:0 i) ~/ s# f7 m6 D W
a) wires are retained by a cord anchorage adjacent to the terminals;# g) P0 z- y q( G- ^7 j7 Y0 t. _( ?3 l
b) conductor is clamped by a spring type screwless terminal;
$ d/ ~' y. h: z: S6 Cc) the wire conductor is anchored to the tag before soldering, unless breakage close to the soldering place is
7 i9 p$ m6 Y0 D( } e+ A' T' Mlikely to occur as a result of vibration;
& p" ^, h+ a! {& G0 z! ^d) wires are twisted together in a reliable manner;
# z( L. W3 Q. a& a+ o! S; We) wires are fastened together by insulation tape, sleeves, or the like;
$ r4 r5 M$ _ X1 I" Df) the wire conductor is inserted into a hole in a printed board, bent and soldered, the hole having a diameter2 L/ s1 ]$ s+ J
slightly greater than the conductor;
9 m) V6 w5 G2 Fg) the wire conductor is securely wrapped around the terminal by means of a special tool (see Figure 19);
5 J( A# Q& }9 B, Zh) the wire conductor is crimped to the terminal by means of a special tool (see Figure 19).: _8 e6 V9 r$ h J1 {! D
The methods under a) to h) apply to internal wiring and the methods under a) and b) to rewireable external flexible7 B, m' z! `5 \* ^ J
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