According to the standard requirements of IEC60335-1 clause 25.14, the supply cord of household electrical appliances such as coffee pots, electric irons, lamps and other appliances need to undergo flexing resistance tests.
The basic requirements for supply cord flexing test:
- The oscillating member is moved through an angle of 90°(45° on either side of the vertical),
- The rate of flexing is 60 per minute
- A force of 10N or 5N is applied to the power cord
- The number of flexings for type Z attachments being 20000 and for other attachments 10000.
- During the test, the conductors are supplied at rated voltage and loaded with the rated current of the appliance
The result of the flexing test can’t be:
- A short circuit between the conductors
- A breakage of more than 10% of the strands of any conductor
- Separation of the conductor from its terminal
- Loosening of any cord guard
- Damage to the cord or cord guard which could impair compliance with this standard
- Broken strands piercing the insulation and becoming accessible
For this test, Pego has produced a supply cord flexing test apparatus to meet the requirements. The supply cord flexing test apparatus is used to simulate the frequent bending of the outlet of the power cord of household appliances during movement, and to assess whether the outlet of the power cord will cause dangers such as wire breakage and insulation damage due to bending. It evaluates the protection and bending resistance of the outlet of the power cord. The power cord bending testing machine also can be used for testing different samples by customizing fixtures, weights, and load voltage and current to meet other standards, like IEC60884-1, IEC60745-1 etc.
