Arrangement for test on covers or cover plates

Introduction:

24.14.1 Verification of the retention of covers or cover-plates 

Forces are gradually applied perpendicular to the mounting surface, in such a way that the

resulting force acting on the centre of the covers, cover-plates, or parts of them is respectively.

– 40 N, for covers, cover-plates or parts of them complying with the tests of 24.17 and

24.18, or

– 80 N, for other covers, cover-plates or parts of them.

The force is applied for 1 min. The covers or cover-plates shall not come off.

The test is then repeated on new specimens, the cover or cover-plate being fitted on the wall

after a sheet of hard material, (1 ± 0,1) mm thick, has been fitted around the supporting frame

as shown in figure 31.

NOTE The sheet of hard material is used to simulate wallpaper and may consist of a number of pieces.

After the test, the specimens shall show no damage within the meaning of this standard.

24.14.2 Verification of the removal of covers or cover-plates

A force not exceeding 120 N is gradually applied, perpendicular to the mounting/supporting

surfaces, to covers, cover-plates or parts of them by means of a hook placed in turn in each

of the grooves, holes, spaces or the like, provided for removing them.

The covers or cover-plates shall come off.

Conform to standard:

IEC 60884-1:2002+A1:2006 figure 31

Technical Parameter:

lTest range:around 250mm;

lHard board:1+/-0.1mm;

lForce range:0-200N;