0.02mm 2UEW/2UEW155 polyurethane enameled copper magnet winding wire

Main test items:

pinhole test, minimum withstand voltage, tensile test, maximum resistance value.

Test method for pinhole test:

Take a sample with a length of about 6m, immerse it in 0.2% saline. Drop an appropriate amount of 3% alcohol solution in the saline and put 5m long sample in it.

The solution is connected to the positive electrode, and the sample is connected to the negative electrode. After applying 12V DC voltage for 1 minute, check the number of pinholes produced.

For enameled copper wire below 0.063mm, take a sample of about 1.5 meters in length. Only 1m long enameled wire needs to be put into the saline.