Static Flexibility Tester HDX1303
Feature:A sample with a length of 3m±0.05m shall be tested in an apparatus
similar to that shown in figure 2. Two clamps, A and B, shall be
located at a height of at least 1.5m above ground level. Clamp A
shall be fixed and clamp B shall move horizontally at the level of
clamp A. The ends of the sample shall clamped vertically (and
remain vertical during the test), one end in clamp A, the other in
the movable clamp B which shall be at a distance /=0.20m from clamp
A. The cable takes roughly the shape indicated figure 2 by the
dotted lines. The movable clamp B shall then be moved away from the
fixed clamp A until the loop formed by the cable takes the shape,
indicated in figure 2 by the heavy outline, of the U enclosed
wholly between two plumb lines through the clamps and set up
tangentially to the external generatrix of the cable. This test
shall be done twice, the cable being turned in the clamp, after
first test, through 180°.
Parameters:
| A, B clamping head initial distance | 200mm |
| A and B, shall be located at a height above ground level | At least 1.5m |
| Sample length | 3±0.05m |
| The cable being turned in the clamp | 180° |
| Number of testing times | 2 |
Standard:IEC60245-1 Rubber insulated cables-Rated voltages up to and
including 450/750 V-Part 1:General requirements,IEC60245-2 clause
3.2 and Figure 2 Rubber insulated cables-Rated voltages up to and
including 450/750 V-Part 2: Test methods.
Application:It is used for checking mechanical strength of completed flexible
cables. This test does not apply to flexible cables with cores of
nominal cross-sectional area greater than 4mm2 and cables having
more than 18 cores laid up in more than two concentric layers.
Test sample:Completed flexible cables.
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