Varistor UL certification-UL1449 certification test items:
1. Varistor voltage
2. Leakage current
3. Surge test
4. Withstand voltage test
5. Operating voltage test
6. Short-circuit current test
Varistor is a voltage limiting protection device. Using the nonlinear characteristics of the varistor, when the over-voltage appears between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, so as to realize the protection of the post-stage circuit.
Varistor export to the United States for UL certification standards UL 1449 Certification.
Varistor export to the United States for UL1449 certification process:
1. Applicant submits company and product information
2. The applicant shall submit the application form and send the samples to AnKeJie testing and certification laboratory.
3, Anko Jie testing certification laboratory product testing.
4. First factory inspection
5, the applicant is authorized to use the UL mark
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