Roland chung
Trusted Information Resource
Dear all,
As you can see from the caption, my question relates to the judgment of fault test. Our product is powered by alkaline batteries. Because the spacings between traces of polarity on PCB can not meet basic insulation, short circuit test was conducted. Since no fuse employed, the peak temperature during short circuit test is up to 180 degree. But the duration of whole test is less than 5 min because of the batteries destroyed. There are no emission of flames and deformation of enclosures. Could I say this test is OK? But according to clause 52.4.1 in 60601-1 2nd edition, for thermoplastic materials, the ball pressure test specified in clause 59.2 b) is carried out at a temperature 25 degree higher than that measured during SFC tests. If so, the test shall be failure, because the ball pressure test is conducted at (180 25) degree.
Please kindly share your experience. Thanks in advance.
As you can see from the caption, my question relates to the judgment of fault test. Our product is powered by alkaline batteries. Because the spacings between traces of polarity on PCB can not meet basic insulation, short circuit test was conducted. Since no fuse employed, the peak temperature during short circuit test is up to 180 degree. But the duration of whole test is less than 5 min because of the batteries destroyed. There are no emission of flames and deformation of enclosures. Could I say this test is OK? But according to clause 52.4.1 in 60601-1 2nd edition, for thermoplastic materials, the ball pressure test specified in clause 59.2 b) is carried out at a temperature 25 degree higher than that measured during SFC tests. If so, the test shall be failure, because the ball pressure test is conducted at (180 25) degree.
Please kindly share your experience. Thanks in advance.