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  7. Powercord Flex Tester
EC 60320-1 (appliance couplers) section 22 and IEC 60884-1 (plugs and sockets) section 23 require appliance couplers and plugs to be designed so that the cord cannot be subjected to excessive bending at the cord exit. Connectors are subjected to a 20,000 flex test and plugs are subjected to a 10,000 flex test, both 45 degrees from cord axis, with 10N or 20N of force on the cord, and one flex every second. During this test, the rated current of the plug or connector is passed through the phase conductors. Furthermore, half way through the test, the plug or connector is rotated 90 degrees. There shall be no interruption of current, no short circuit between conductors during this test.
Interpower Corporation's powercord Flex Tester This Interpower test equipment allows automated flex testing of plug and connector bend / strain reliefs, typically 10,000 or 20,000 flexes (At one flex per second), per IEC 60320 and IEC 60884. Tests verify plug and connector bend relief designs protect cable and internal conductors from stress, breaking, arcing. thumbnail