Low-Temperature Impact Test Device HC9926
Standard:IEC60811-1-4 clause 8.5 , IEC60884-1 and VDE0620, common test
methods for insulating and sheathing materials of electric and
optical cables-part 1-4:Methods for general application-Test at low
temperature.
Application:For assessing the impact resistance of electrical accessories at
low temperature, it is also used to assess the impact resistance of
wire and cable at low temperature.
Test sample:Electrical accessories, surface mounted installation box, screwed
glands, cover cap, polyvinyl chloride insulating and sheathing
materials of electric cables etc.
Feature:The apparatus shall be placed on a pad of sponge rubber about 40 mm
thick and held in a refrigerator before and during the test.
Parameters:
| Parameters/Model | H9926 | H9926A |
| Working station | Single station | 3 working stations |
| Weight of the drop hammer g | 1000±2 and 100±1 | 100,200,300,400,500,600,750,1000,1250,1500(weight collocation is according to table 1 and table 2) |
| The height of the drop impact mm | 100 | 100 |
| Acier steel | Φ20,Bottom end arc:R300,100g | Φ20,Bottom end arc:R300,100g |
| Corresponding standards and applicable scope | IEC60884-1 clause 24.4,figure 27; IEC60884-1 clause 30.4,figure 42: | IEC60811-1-4:,IEC60811-1-14 |
| Release mode | Manual, mechanical release | Manual, mechanical release |
Table 1:For the samples of laying of cable, the weight of the drop
hammer required are as follows:
| The external diameter of the samples(D/mm) | The weight of the drop hammer /g |
| ＞ | ＜or ≤ |
| - | 4.0 | 100 |
| 4.0 | 6.0 | 200 |
| 6.0 | 9.0 | 300 |
| 9.0 | 12.5 | 400 |
| 12.5 | 20.0 | 500 |
| 20.0 | 30.0 | 750 |
| 30.0 | 50.0 | 1000 |
| 50.0 | 75.0 | 1250 |
| 75.0 | - | 1500 |
Table 2:For the samples of flexible cable and telecommunication
cable, the weight of the drop hammer required is as follows:
| The external diameter of the sample D/mm | The weight of drop hammer /g |
| ＞ | ＜or ≤ |
| For flat flexible cord | 100 |
| - | 6.0 | 100 |
| 6.0 | 10.0 | 200 |
| 10.0 | 15.0 | 300 |
| 15.0 | 25.0 | 400 |
| 25.0 | 35.0 | 500 |
| 35.0 | - | 600 |
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