functional insulation as well as other insulation exists on circuit boards. Typically, the surface environment of a circuit board is determined to be either Pollution degree 3 or pollution degree 2.If the circuit board is mounted in an electrical box and sealed with a solid sealant, the sealing will look as follows: What should be…
We are discussing here the second structure of the PTC heating element, PTC heating element structure please refer to the explanation of its definition. How is the creepage distance of the functional insulation at the location of the red circle in Figure 1 determined? We all know that NOTE 1 of TABLE 18 section has…
فاصله خزش: کوتاهترین فاصله در امتداد سطح عایق بین دو قسمت رسانا یا بین یک قسمت رسانا و سطح قابل دسترسی. تعریف فاصله خزش از استاندارد IEC 60664-1:2020 می آید. از آنجایی که باید فاصله خزش را توضیح دهیم، باید تصاویر شکل 4 تا شکل 14 را در استاندارد IEC 60664-1:2020 نشان دهیم. در اینجا،…
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