JB/T 4278.19-2011 "Rubber plastic Wire and cable test equipment method of verification Part 19: Insulation scratch resistance tester" specifies the verification items and technical requirements of the insulation scratch resistance tester, including verification equipment, method of verification, verification results and processing. This standard is applicable to the verification work of newly manufactured and neutralized insulation scratch resistance testers. The tester should have the function of fixing the sample, the scratch test bench needs to meet specific geometric requirements, and the size of the contact part between the doctor blade and the sample is also strictly stipulated. During the test, parameters such as scraping Frequency, voltage and scraping distance are specified in detail to ensure the accuracy and Reliability of the test results.