IEC60950-1 Annex AA Mandrel Test Device With Three 50N weights
IEC60950-1 Annex AA
Three test samples, each individual sample consisting of three or
more layers of non-separable thin sheet material forming REINFORCED
INSULATION , are used. One sample at a time is fixed to the mandrel
of the test fixture (Figure AA.1) as shown in Figure AA.2.
A downward force of 150 N ± 10 N is applied to the free end of the
sample (see Figure AA.3), using an appropriate clamping device. The
mandrel is rotated
− from the initial position (Figure AA.2) to the final position
(Figure AA.3) and back;
− as above for a second time;
− from the initial position to the final position. Audio Video Test Equipment
If a sample breaks during rotation where it is fixed to the mandrel
or to the clamping device, this does not constitute a failure. If a
sample breaks at any other place, the test has failed.
After the above test, a sheet of metal foil, 0,035 mm ± 0,005 mm
thick, at least 200 mm long, is placed along the surface of the
sample, hanging down on each side of the mandrel (see Figure AA.3).
The surface of the foil in contact with the sample shall be
conductive, not oxidized or otherwise insulated. The foil is
positioned so that its edges are not less than18 mm from the edges
of the sample (see Figure AA.4). The foil is then tightened by two
equal weights, one at each end, using appropriate clamping devices.
Audio Video Test Equipment
Standard:Confirm to IEC60065:2014 clause 8.21, figure 14~16, IEC60950
Application:Insulation anti damage strength verification for non separable thin
Test sample:Non separable thin layer material. Audio Video Test Equipment
Feature:The position of 10°and 230°are set with mechanical limit,not only
to ensure the accuracy of the test angle, but also to achieve a
simple operation method; weight with a hanging ring, in case of a
point is damaged because of too large pull force.
1,Weight of 50N*3pcs,can be combined to achieve 100N and 150N
2,Number of test times:3 times.
3,Withstanding voltage tester(Optional). Audio Video Test Equipment
|Test object||non-separable thin sheets of audio video apparatus|
|Reference standard||IEC 60950-1, IEC 61558-1|
|Weights||50N * 3pc|
|Test mandrel||Triangle bar with a tip Audio Video Test Equipment|
|Test times||3 times|
|Dimension||240mmx 240mmx 600mm|
|Optional||withstand voltage tester|