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Edit: GTG 2021-12-30 41
62368-1 has been implemented in most countries and regions. As a common standard for IT, communication equipment and computer peripheral products, the products meet the requirements of the 62368-1 standard and become an important step to enter the international market. Among them, electrical distance plays a very critical role in safety assessment. The risk of electric shock is the focus of safety assessment, and electrical distance is an important method to meet the protection of electric shock. GTG Xiaobian compiled and collected relevant information, and made a simple induction and interpretation of the electrical distance requirements in 62368-1.
Electrical distances are divided into two categories, namely clearance and creepage.
CLEARANCE REQUIREMENTS OF 62368-1
CLEARANCE REQUIREMENTS, the corresponding clause of 62368-1 is 5.4.2, and is the primary method for evaluating clearances. In addition, Appendix X provides a second alternative method, and the original method is 1 of 2.
a) Clause 5.4.2 of 62368-1 requires two paths to evaluate clearances, namely the working voltage look-up table method (clause 126.96.36.199) and the withstand voltage look-up table method (clause 188.8.131.52), and then take the highest value. There are many contents in this clause, which are summarized in the following table for easy understanding and use.
62368-1 Creepage distance requirements
Compared to the clearance requirements of 62368-1, the requirements for creepage distances in Clause 5.4.3 of 62368-1 are simpler. Summarized as follows:
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