发电电动机技术要求 Technical requirements for motor-generator  ICS  29.160 CCS  K 20   中华人民共和国国家标准 GB/T 20834—2024 代替 GB/T 20834—2014 2024-09-2 9发布 2025-04-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     现场运行条件   ·························································································   1 5     定额与参数   ···························································································   2      5.1     容量与功率   ······················································································   2      5.2     额定电压   ·························································································   2      5.3     额定功率因数   ····················································································   2      5.4     额定转速   ·························································································   2      5.5     运行期间电压和频率的变化   ·····································································   2      5.6     效率和损耗   ······················································································   3      5.7     电气参数和时间常数   ·············································································   4      5.8     总谐波畸变率（THD）   ·········································································   4 6     温度   ··································································································   4      6.1     温升   ······························································································   4      6.2     定子温升的测量   ·················································································   5      6.3     非基准运行条件和定额时温升限值的修正   ······················································   5      6.4     轴承温度   ·························································································   5 7     运行特性及电气连接   ·················································································   5      7.1     特殊运行要求   ····················································································   5      7.2     电动工况起动方式   ···············································································   5      7.3     电气连接   ·························································································   5 8     绝缘系统   ······························································································   5 9     机械性能与设计   ······················································································   6      9.1     旋转方向   ·························································································   6      9.2     最大设计转速   ····················································································   6      9.3     临界转速   ·························································································   6      9.4     振动分析与固有频率   ·············································································   6      9.5     结构强度和刚度   ·················································································   6      9.6     起动和停机   ······················································································   6      9.7     超速   ······························································································   7 10     振动与摆度   ··························································································   7 11     噪声   ·································································································   7 GB/T 20834—2024     Ⅰ 12     结构要求   ······················