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6.2.2. Isolations

Isolation clearances necessary to consider an isolation as basic or double, as well as the material used for isolation should comply with certain rules. The isolation material should not be hygroscopic, should have the appropriate thickness and enough creepage. The minimum clearances to consider the type of isolation can be broken down in two types: clearances and creepages. The term clearance indicates the minimum direct distances between two circuits that must be isolated, while the creepage indicates the minimum distance that must exist between the two points following the intermediate isolation contour. These distances vary depending on the level, environment in which the equipment will operate and the voltage that the equipment is supposed to lock. For further information, please check the applicable standard for each type of equipment.