The purpose of this test is to confirm the durability of power cables at the entry point of electrical appliances. The cable entry point is typically a potential failure point because the cable may undergo excessive bending and curving due to sharp angles in the equipment. (Please note: Devices with retractable power cords are exempt from the cable bend test.)

The testing and equipment used in this process adhere to the following standards: IEC 60227-2 clause 5.6.3.2, IEC 60227-2 clause 3.2, and IEC 60335-1 clause 25.14. 

The cable bend test involves securing a suitable length of cable sample in the equipment and applying a load of 0.5 kg. A current of approximately 0.1A should pass through the cable conductors. The sample is then bent back and forth in a plane perpendicular to the axis of the conductors, forming 90° angles on either side of the vertical line. The bending motion covers a 180° range, with a bending rate of 60 cycles per minute, for a total of 60,000 cycles and 120,000 individual strokes.

During this process, the current should not be interrupted, and the equipment will automatically indicate any such faults.

Upon completion of the test, the cable is subjected to further testing, a 1.5kV withstand voltage test, as per IEC 60227-2 clause 2.2, which is applied to the conductors and the cable immersed in water.