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IEC60335-2-14、GB4706.30
3.1.9.110 Food mixers with beaters for mixing cake batter are operated with the beater blades as close as possible to the bottom of a bowl containing dry sand having a grain size
between 170 μm and 250 μm. The height of the sand in the bowl is approximately 80 % of the length of the effective part of the beater.
3.1.9.110 带有混合做蛋糕糊状物搅打器的食物混合器工作时，其搅打器的叶片应尽可能靠近有干沙的混料盆，沙粒的大小在170um～250um之间。盆中沙子的高度为搅打器有效部件长度的80%。
UL982 负载沙50~80目
满足UL982第36.2.2节要求：
36.2.2 Dry 50 – 80 core sand is to be used as a load for the type of food mixer mentioned in 36.2.1. The beater blades are to extend as nearly as possible to the bottom of the mixing bowl, and the depth of the level sand is to be such as to cover approximately 80 percent of the blade length when the blades are stationary. If this quantity of sand is enough to stall the blades of a multiple-speed machine on the low speed, just enough sand may be removed to permit motion of the blades for the low-speed operation only.
