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…
distanza superficiale: distanza più breve lungo la superficie dell’isolante tra due parti conduttrici o tra una parte conduttiva e la superficie accessibile. Le cariche possono propagarsi in modo direzionale attraverso l’aria, formando così una corrente. Questo è il significato dell’autorizzazione. Le cariche possono effettivamente propagarsi anche attraverso il materiale isolante stesso, poiché nessun materiale è…
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