|

If the PCB is sealed with solid sealant, how to determine the creepage distance and clearance?

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…

How are the creepage distances and electrical clearances of PTC heating element surfaces determined?

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…

Article 3 – Comment comprendre la définition de « ligne d’isolement »

distance de fuite : distance la plus courte le long de la surface de l’isolant entre deux parties conductrices ou entre une partie conductrice et la surface accessible. Les charges peuvent se propager de manière directionnelle dans l’air, formant ainsi un courant. C’est le sens du dédouanement. En fait, les charges peuvent également se propager…