Standard No.:	JB/T 8990-1999
English Name:	Modal test analyses and natural frequency measurement methods of large turbo-generators on stator end windings and evaluation criteria
Chinese Name:	大型汽轮发电机定子端部绕组模态试验分析和固有频率测量方法及评定
Chinese Classification:	K21    Synchronous machine
Professional Classification:	JB    Professional Standard - Machinery
Issued by:	国家机械工业局
Issued on:	1999-8-6
Implemented on:	2000-1-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	90.0
Delivery:	via email in 1~3 business day

本标准规定了大型汽轮发电机定子端部绕驵模态试验分析和固有频率的测量方法及评定准则。
本标准适用于额定功率300MW及以上的额定转速为3000r/min和3600r/min的大型汽轮发电机（包括在空冷、双水冷、全氢冷和水氢冷等）定子端部绕组的模态试验分析和固有频率测量及评定。