|
你这个问题没描述清楚。这个图2是IEC61984的图2,而IEC61984里面说的很清楚了:
. i% t9 x4 s, B$ Z
9 a! @- S" c- t" Z: f# k- [4 I7.3.10 Bending (flexing) test
( e! X# \, d" k PNon-rewirable connectors shall be subjected to a bending test in an apparatus similar to that( f7 A. T% h- A. D& q- |1 O
shown in Figure 2.
6 u0 Q3 h2 m1 l1 j/ p: k" {- e% X4 P7 `: H* h }
The specimen is fixed to the oscillating member of the apparatus so that, when this is at the1 d# d8 F. {# X8 Z8 b# k" U8 J
midpoint of its travel, the axis of the flexible cable, where it enters the specimen, is vertical' r. P& M4 m$ e5 u+ g
and passes through the axis of oscillation.
: a7 w' k$ @% a( l8 L UThe oscillating member is, by variation of distance d shown in Figure 2, so positioned that the
; N9 j- n5 [7 `, U! }/ g6 T0 Fflexible cable makes a minimum lateral movement when the oscillating member of the test
" [2 Y' L( F1 Z8 g. n3 y1 v% N5 Zapparatus is moved over its full travel.4 a2 |$ B R* {. c' b
The cable is loaded with a weight such that the force applied is
3 U4 i( ~( q+ U8 Y• 20 N for non-rewirable connectors with a conductor cross-sectional area > 0,75 mm2;
# w( Y9 |1 ~% c! \( A• 10 N for non-rewirable connectors with a conductor cross-sectional area ≤ 0,75 mm2.' O3 z0 C, I! J ?
A current equal to the rated current of the connector is passed through the conductors, the
) \' _, k% V' U/ Hvoltage between them being the rated voltage. The protective conductor, if any, shall be: E) }* Z, b# ^7 a
loaded with a sufficient current to perform the continuity test.. C! \. g* t$ @, y9 S# t# _9 m
The oscillating member is moved backwards and forwards through an angle of 90° (45° on* x. q# l \8 I% d# O
either side of the vertical). The number of bendings shall be specified by the DS or the
3 |' u$ `5 f8 q) H: gmanufacturer’s specification. Preferred values are given in Table 4b. The rate of bendings D. |4 X9 ~4 F$ f$ G& s
shall be 60 per minute. One bending is one movement, either backwards or forwards.
. _- E! Q+ X2 I- n, q gSpecimens with cables of circular cross-sectional area shall be rotated approximately 90°
3 r6 f2 w+ O0 b- waround the vertical axis within the oscillating part after 50 % of flexings; specimens with flat# W/ M2 |7 U9 f6 [- W( S! }
flexible cables are only bent in a direction perpendicular to the plane containing the axis of1 |8 s7 t8 g# _1 R+ D; M
the conductor.; } Y! e6 q* T2 \) h; ^2 k# C& V
2 K* i/ g* k; a8 I; l5 r$ @1 y
|
|