根据国家有关部门下达的任务要求,为促进生产企业提高产品质量、防止劣质产品危害国家和消费者利益,今年第三季度集中在东北地区对Y系列(IP44)小型三相异步电动机的部分生产厂进行了国家监督性产品质景抽查。这次共抽查了15家电机厂,其中3家因并厂转产或因暂无原料生产Y系列产品,其余12家厂分在黑龙江、吉林、辽宁等省。一、抽查方法 1.抽样方法一律采用事先不通知的突击性随机抽样的方法,依据GB2828-81计数抽样标准进行。考虑到产品样品实物重而大,且运输周期长、试验工作量大等因素,决定在被检厂家成品库内控制库存量在150台之内抽取6台样机的原则。其中3台样机在现场就地检测 According to the requirements issued by the relevant authorities of the country, in order to promote production enterprises to improve product quality and prevent inferior products from harming the interests of the country and consumers, the third quarter of this year will focus on the production of Y series (IP44) small three-phase asynchronous motors in the northeastern region. A national sample of supervised product quality checks was conducted. A total of 15 motor plants were spot-checked this time, among which 3 were converted to production or Y-series products were temporarily produced without raw materials. The remaining 12 plants were divided into Heilongjiang, Jilin and Liaoning provinces. First, sampling methods 1. Sampling methods shall be adopted without prior notice of surprise random sampling method, according to GB2828-81 count sampling standards. Taking into account the fact that the product samples are heavy and heavy, with long transport cycles and large test workload, it was decided to take six prototypes within 150 units of controlled inventory in the finished product warehouse. Three of the prototypes were tested at the site