Accretion (meteorology) Accretion (meteorology) Accretion is defined as the gradual collection of something over time. In meteorology or atmospheric science it is the process of accumulation of frozen water as precipitation over time as it descends through the atmosphere, in particular when an ice crystal or snowflake hits a supercooled liquid droplet, which then freeze together, increasing the size of the water particle. The collection of these particles eventually forms snow or hail in clouds and depending on lower atmosphere temperatures may become rain, sleet, or graupel. Accretion is the basis for cloud formation and can also be seen as water accumulates
Explosion-proof enclosure ingress of sleet, snow, dust, dirt, and rain. In addition to the features and benefits that accompany Type 1 and Type 2, this make offers a much higher resistance to rain, sleet, snow, dust, and extreme weather conditions. Offers protection against hazardous parts and guards the equipment from getting damaged by solid foreign objects. Type 3S enclosures can be used both indoors and outdoors to keep electrical equipment from deteriorating due to the ingress of rain, snow and sleet and functional flaws even when it is fully covered with ice. Over and above the protection offered by Type 3R, these