Two-thirds of the length of the cord is unreeled. If the withdrawable length of the cord is less than 225 cm, the cord is unreeled so that a length of 75 cm remains on the reel. An additional length of 75 cm of the cord is then unreeled and pulled in a direction so that the greatest abrasion occurs to the sheath, taking into account the normal position of use of the appliance. Where the cord leaves the appliance, the angle between the axis of the cord during the test and the axis of the cord when it is unreeled without substantial resistance is approximately 60°. The cord is allowed to be recoiled by the reel.
If the cord does not recoil at the angle of 60°, this angle is adjusted to the maximum that will allow recoil.
The test is carried out 6 000 times at a rate of approximately 30 times per minute or at the maximum rate allowed by the construction of the cord reel if this is less.
The device adopts a multi-functional fixture, large work surface, can test cord reels up to 300cm, test speed (5-30 times / min) is adjustable, and it is suitable for most test electrical products.
|Compressed air 5 ~ 7kg / cm2
|30 cycles / min (or at the maximum rate allowed by the construction of the cord reel if this is less)
|0~9999 times, the test device will stop working automatically when the preset test cycles are finished
|30~70°，can be preset
|Quick clamping fixtures, easy for clamping the test sample
|Maximum 1000mm, can be adjust