IEC60598-2-20 Light Testing Equipment For Winding A Flexible Pipe
Conform to standard: IEC60598-2-20:6.14 Figure 3,
it is used to test the mechanical strength of the light string.
Diameter of cylinder (mm): 250mm
IEC60598-2-20 Test Device Suitable For Winding A Flexible Pipe
20.6.14 Sealed lighting chains shall have adequate mechanical strength.
For rigid sealed lighting chains, compliance is checked by subjecting the pipe 45 times to each
of the following tests carried out in turn:
- a) A pull of 60 N, the stress being applied to the ends of the pipe, without jerks, for 1 min.
- b) A torque of 0,15 Nm, the stress being applied to the ends of the pipe in the most
unfavourable direction (alternatively in cases of doubt) without jerks for 1 min.
For flexible sealed lighting chains, compliance is checked by the tests of a) and b) above
followed by the additional test below:
Wind the pipe on a cylinder of 250 mm diameter with a pull of 60 N for the number of
operations and at the ambient temperature given below:
– for chains having an IP number up to and including 20 10 times at 25 °C ± 5 °C
– for chains having an IP number over 20 10 times at 25 °C ± 5 °C
10 times at –15 °C ± 5 °C
After the test, the pipe shall show no damage affecting the safety of the chain and shall comply
with the electric strength test of clause 20.14 applied between live parts and the body.
NOTE 1 Failure of lamps during the test is permitted.
NOTE 2 An example of a test device suitable for winding a flexible pipe is given in figure 3.