GB/T 1029-2005 三相同步电机试验方法

29.160.01

石臀

中华人民共和国国家标准

GB/T1029-2005

代替GB/T1029-1993

三相同步电机试验方法

Testproceduresforthree-phasesynchronousmachines

2005-08-26发布2006-04-01实施

中华人民共和国国家质量监督检验检疫总局发布

中国国家标准化管理委员会

GB/T1029-2005

目次

前言·················································································································……V

1范围··一1

2规范性引用文件.·1

3试验准备·········································································································……1

4一般性试验项目···········································································，···················……1

4.1绝缘电阻的测定·······················································································..··..……1

4.2绕组在实际冷状态下直流电阻的测定··································································……2

4.3轴电压测定·········································································，·······················……4

4.4空载特性的测定·························································································.·..……4

4.5稳态短路特性的测定······················································.·.……，……5

4.6励磁机试验··································································································……6

4.7超速试验······································································································……6

4.8隐极式发电机转子匝间短路试验·············································.·……6

4.9振动的测定··············································································，····················……6

4.10密封状态检查和漏氢测定······································································.····……6

4.11匝间冲击耐电压试验·····································································..……，……6

4.12短时升高电压试验·······························································.·.···……，.，二6

4.13工频耐电压试验···············································································……6

4.14电枢绕组绝缘直流泄漏电流试验及直流耐压试验·················································……8

4.15电压波形正弦性畸变率的测定·······················，，························.·……..‘...……9

4.16噪声的测定····································································，·····.·...……，……9

4.17电话谐波因数的测定······································································.·……，.，9

5效率测定········································································································……10

5.1效率的直接测定法······································.···……10

5.2效率的间接测定法············································……11

5.3量热法···，·································································，································……12

5.4对应于额定负载时各种损耗的测定····································································……12

5.5自减速试验··········································································...·……15

5.6其他负载时效率的求取·····，····························································……16

6温升试验········································································，·······························……16

6.1温度测量方法··························································································……16

6.2温升试验时冷却介质温度的测定，········································.·……16

6.3温升试验时电机各部分温度的测定························，······，········，··························……17

6.4电机各部分在切离电源后所测得的温度修正······················，········，······················……17

6.5短路保温制动法········，··········，··········································.·……17

6.6温升试验方法························，···········，········································……，·.·……，，.，18

7自励恒压时电压调整性能测定···················································……，·.…，·……21

7.1稳态电压调整率的测定·········，······，·····················································，·……，.·...……21

r

GB/T1029-2005

7.2发电机在不对称负载工作时电压偏差程度的测定···················································……21

7.3瞬态电压变化率的测定·······，·，········，·，，······，········，·，，·······，···.····.····……21

8转矩和转动惯量的测定································，.·.············.·……，·……22

8.1堵转电流和堵转转矩测定··············，‘，····，···············，··········.·..··一·，……22

8.2标称牵人转矩的测定.······················……23

8.3同步电动机失步转矩的测定·····························································.···.·……25

8.4电动机的短时过转矩试验···，··············，·····。·············，，······。··················.·······..·…·…26

8.5转动惯量的测定·····，··········，···········，····························……，···········.··.……26

9过电流和机械强度试验···········································，·······················，····...··……26

9.1偶然过电流试验。，，，·1·，，···，··。，，，，·，·，··········，.·.·..·..·..·‘…，，.，，.…，，·‘·，.‘26

9.2过载试验·············，························································································……26

9.3短路机械强度试验……‘26

10负序电流承受能力试验一·，.···……27

11定子绕组端部动态特性测定····················································……27

12参数测定(本章等同采用IEC60034-4)·······················，，······················，·····。·.·..····……27

12.1说明··················································，·····················································……27

12.2用空载饱和特性与三相稳态短路特性确定参数···················································……28

12.3零功率因数过励试验····························，··，···············甲，····.·..·.-..·.·……28

12.4零功率因数过励时，对应额定电压和额定电枢电流时的励磁电流的确定·····················……28

12.5用空载特性、三相稳态短路特性和零功率因数(过励)时对应额定电压和额定

电枢电流的励磁电流确定保梯电抗，···········，······················，·······29

12.6用保梯图确定额定励磁电流·······················································.····……29

12.7用ASA图确定额定励磁电流····，·························，···········.·.··‘·.·..·…30

12.8用瑞典图确定额定励磁电流··········································…·…，...·.·……31

12.9反励磁试验···················，······················，·································，‘··················……31

12.10用反励磁试验确定X。···，·，···················，··········.··········.·，···········..……，，31

12.11低转差率试验····················································································.·.·····……32

12.12用低转差率试验确定Xq·，·，········，，··········，·································，······.·……33

12.13用负载试验测定功角a..························································...·.·……，.33

12.14用负载试验测定功角法确定Xq··················，··················································……33

12.15三相突然短路试验，，·····，，···。‘··，·········，········，··】···，····，，，，···一·，.……34

12.16由三相突然短路试验确定参数···················································.········.·...·..……36

12.17电压恢复试验····，··························……，，······...·······……36

12.18用电压恢复试验确定参数.····，·········‘··········.·……37

12.19转子相对电枢绕组磁场处于直轴和交轴位置时的外施电压试验······························……37

12.20用转子相对电枢绕组磁场直轴和交轴位置时的外施电压试验测定参数···，······‘·，·······……37

12.21当转子处于任意位置时的外施电压试验·········································，····················一38

12.22用转子处于任意位置时的外施电压试验确定参数················································……38

12.23两相稳态短路试验········，···，，···················-‘··，····，，，.·“。。…，，·…，..…38

12.24用两相稳态短路试验确定参数···········································…·…，············……39

12.25逆相序试验·······，···········，·····，·····，·································，，···········，·······.·······……39

12.26用逆相序试验确定参数···，·，·········，·，···········································，·.···.·...……39

12.27三相绕组外施单相电压试验·······················································.···.·……39

GB/T1029-2005

12.28用三相绕组外施单相电压试验确定参数····························································……40

12.29两相对中性点稳态短路试验40

12.30用两相对中性点稳态短路试验确定参数····························································……40

12.31电枢绕组开路时的励磁电流衰减试验·······························································……41

12.32用电枢绕组开路时的励磁电流衰减试验确定式。················································……41

12.33电枢绕组短路时的励磁电流衰减试验·······························································……41

12.34用电枢绕组短路时的励磁电流衰减试验确定Ta················································……41

12.35悬挂转子扭摆试验·······················································································……41

12.36用悬挂转子扭摆试验确定T;和H··································································……41

12.37辅助摆摆动试验42

12.38用辅助摆摆动试验确定T;和H·····································································……42

12.39空载自减速试验··························································································……42

12.40用空载自减速试验确定T;和H42

12.41机械联结机组的有载自减速试验，而同步电机作电动机运行·································……43

12.42用同步电机作电动机运行的有载自减速试验确定兀和H43

12.43电机作发电机运行时的甩负载加速试验····························································……43

12.44用电机作发电机运行时的甩负载加速试验确定兀和H43

12.45额定电压调整率△UN43

12.46用已知试验参数通过计算确定参数··································································……43

附录A(规范性附录)空载短路法求取励磁绕组温升时的AB值····································……46

附录B(资料性附录)物理量的符号及单位·······························································……47

GB/T1029-2005

前言

本标准规范了三相同步电机产品的各项试验方法，是三相同步电机产品各项试验的依据。

本标准前一版本GB/T1029-1993《同步电机试验方法》参照采用了IEC60034-2:1972,IEC

60034-4:1985,IEEE115,1983,I'OCT10169:1977和POCT11828:1986等国际国外标准。

本标准是GB/T1029-1993((同步电机试验方法》的修订版本。在原版标准的基础上，主要作了如

下修订:

1.考虑到我国的实际国情，第12章参数的测定修改采用了国际电工委员会IEC60034-4:1985《同

步电机参数试验方法》,IEC60034-4的附录A为未经最后审定的试验方法，由于该附录内容实际应用

尚不成熟，故本标准中删除了此附录。

2.增加了前言;

增加了负序能力试验;

增加了定子绕组端部动态特性测定;

增加了瞬态电压变化率的测定等内容。

3.删除了全电流法和叠加法的相关内容;

删除了对两台相似或匹配的电机可采用规定的同步反馈法;

删除了短路电流试验等内容。

4.将励磁电流和电压调整率的测定、转动惯量的测定调整到参数的测定中。

5.对原标准GB/T1029-1993中有误之处进行更正。主要更正如下:

①原标准6.6.3.4中:"(I孰RR-o3，775580x0)”改为“(I孰Rv,,75一OX,;

②原标准公式(52)中:第二个“=”改为“·”;

。，L一‘，、__、二“iU、一U'\尸+尸f。尸+尸f-，，

VIh:bFl}L'isllbU7'-I-':编=气石二石r}’

(1一s)PN0一)‘PN

&V"to一(UuN.-U')“·

④若干打印字符错误(上、下角标等)。

6.删除了原标准的附录A、附录B、附录Co

本标准自实施之日起，代替GB/T1029-1993,

本标准的附录A是规范性附录，附录B是资料性附录.

本标准由中国机械工业联合会提出。

本标准由全国旋转电机标委会发电机分技术委员会归口。

本标准由哈尔滨大电机研究所负责起草，东方电机股份有限公司、上海汽轮发电机有限公司、华北

电科院、华中科技大学、发电设备国家工程研究中心、哈尔滨工业大学、上海电器科学研究所等单位参加

起草。

本标准主要起草人:富立新、苟智德、朱昌谦、沈蓉洲、白亚民、宁玉泉、赵一军、孙力、康尔良、

倪立新。

本标准所代替标准的历次版本情况为:

GB1029-1967(首次发布)、GB1029-1980(第一次修订)、GB/T1029-1993(第二次修订)。

本次修订为第三次修订。

GB/T1029-2005

三相同步电机试验方法

范围

本标准规定了三相同步电机的试验方法。

本标准适用于额定功率为1kW(kVA)及以上的同步电动机、发电机和同步调相机不适用于无

直流励磁绕组的同步电机，静止变频电源供电的同步电动机试验可参照使用。

2规范性引用文件

下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有

的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究

是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。

GB755-2000旋转电机定额和性能(idtIEC60034-1:1996)

GB/T5321用量热法测定大型交流电机的损耗及效率(GB/T5321-1985,neqIEC60034-2A:1974)

GB/T7409.3同步电机励磁系统大、中型同步发电机励磁系统技术要求

GB10068轴中心高为56mm及以上电机的机械振动振动的测量、评定及限值(GB10068-

2000,idtIEC60034-14:1996)

GB/T10069.1旋转电机噪声测定方法及限值噪声工程测定方法

GB/T10069.2旋转电机噪声测定方法及限值噪声简易测定方法

GB/T10585中小型同步电机励磁系统基本技术要求

GB/T15548往复式内燃机驱动的三相同步发电机通用技术条件

JB/T6227氢冷电机密封性检验方法及评定

JB/T7836.1电机用电加热器通用技术条件

JB/T8445三相同步发电机负序电流承受能力试验方法

JB/T8446隐极式同步发电机转子匝间短路测量方法

JB/T8990透平型发电机定子绕组端部动态特性和振动试验方法及评定

JB/T9615.1交流低压电机散嵌绕组匝间绝缘试验方法

JB/T9615.2交流低压电机散嵌绕组匝间绝缘试验限值

JB/T10098交流电机定子成型线圈耐冲击电压水平(JB/T10098-2000,idtIEC60034-15:1995)

JB/T10500.1电机用埋置式热电阻第1部分:一般规定、测量方法和检验规则

IEC60034-2旋转电机第2部分损耗和效率的试验方法

IEC60034-4旋转电机第4部分参数试验方法

3试骏准备

试验时，采用的电气测量仪器、仪表的准确度应不低于。.5级(兆欧表除外)，测量三相功率时允许

采用准确度为1.0级的三相瓦特表。测量温度时，允许采用误差为士1℃的温度计

试验前被试电机应处于正常状态，接线正确，设备及导线应符合试验要求。

4一般性试验项目

4_1绝缘电阻的测定

4.1.1绕组对机壳及绕组相互间绝缘电阻的测定

GB/T1029-2005

1.1测.时电机的状态

测量电机绕组的绝缘电阻时应分别在电机实际冷状态和热状态(或温升试验后)下进行。

检查试验时，如无其他规定，则绕组对机壳及绕组相互间的绝缘电阻仅在冷状态下测量。

测量绝缘电阻时应测量绕组温度，但在实际冷状态下测量时可取周围介质温度作为绕组温度

1.2兆欧表的选用

测量绕组对机壳及绕组相互间的绝缘电阻时应根据被测绕组的额定电压按表1选择兆欧表。

表1

被测绕组额定电压UN/V兆欧表规格/V

口.<I000500

1OOO(UN簇2500500-1000

2500<U"簇50001000^2500

5000<U簇120002500-5000

UN>1200050oo-1o000

4.1.1.3测f方法

测量绕组绝缘电阻时，如果各绕组的始末端单独引出，则应分别测量各绕组对机壳及绕组相互间的

绝缘电阻，这时，不参加试验的其他绕组和埋置检温元件等均应与铁心或机壳作电气连接，机壳应接地。

当中性点连在一起而不易分开时，则测量所有连在一起的绕组对机壳的绝缘电阻。

绝缘电阻测量结束后，每个回路应对接地的机壳作电气连接使其放电。

测量水内冷绕组的绝缘电阻时，应使用专用的绝缘电阻测量仪，在绝缘引水管干燥或吹干的情况

下，可用普通兆欧表测量。

不能承受兆欧表高压冲击的电器元件(如半导体整流器，半导体管及电容器等)应在测量前将其从

电路中拆除或短接。

测量时，在指针达到稳定后再读取数据，并记录绕组的温度。

若测量吸收比，则吸收比凡。/凡应测得15s和60s时的绝缘电阻值。

若测量极化指数，则极化指数凡o/R:应测得1min和10min时的绝缘电阻值。

4.1.2其他绝缘电阻的测定

4.1.2.1轴承绝缘电阻的测定

轴承绝缘电阻的测定用不高于1000V的兆欧表测量。

4.1.2.2埋置检温计绝缘电阻的测定

埋置检温计的绝缘电阻测定按JB/T10500.1规定的方法进行

4.1.2.3加热器绝缘电阻的测定

加热器绝缘电阻的测定按JB/T7836.1规定的方法进行。

4.2绕组在实际冷状态下直流电阻的测定

4.2.1实际冷状态下绕组温度的测定

将电机在室内放置一段时间，用温度计(或埋置检温计)测量电机绕组1铁心和环境温度，所测温度

与冷却介质温度之差应不超过2K，对大中型电机，温度计应有与外界隔热的措施，且放置温度计的时

间应不少于15min.

测量电枢绕组和辅助绕组(如自励恒压发电机谐波绕组等)温度时应根据电机的大小，在不同部位

测量绕组端部和绕组槽部的温度(如有困难时可测量铁心齿和铁心扼部表面温度)，取平均值作为绕组

的实际冷状态下温度。

测量凸极式电机的励磁绕组温度时，可在绕组表面若干处直接测量温度，取其平均值作为绕组的实

2

GB/T1029-2005

际冷状态下温度。

测量隐极式电机的励磁绕组温度时，应测量绕组表面的温度，有困难时可用转子表面温度代替，对

大中型电机，测点应不少于三点，取其平均值作为绕组的实际冷状态下温度。

测量自励恒压发电机的励磁装置绕组(如变压器、电抗器绕组等)温度时，应用温度计测量铁心或绕

组的表面温度作为绕组的实际冷状态下温度。

对于液体直接冷却的绕组在通液体的情况下，可在绕组进、出口处液体的温度之差不超过1K，铁

心温度与环境温度相差不超过2K时，取绕组进出口液体温度的平均值作为绕组的实际冷状态下温度

4.2.2绕组直流电阻的测定

绕组的直流电阻可用电桥法、微欧计法、电压表电流表法或者其他测量方法测量

4.2.2.1当使用自动检测装置、数字式微欧计等仪器测量绕组的直流电阻时，通过被测绕组的试验电

流应不超过其额定电流的1000，通电时间不超过1min.

4.2.2.2使用电桥测量时，每一电阻应测量三次，每次应在电桥平衡破坏后重新进行测量，每次读数与

三次读取数据的平均值之差应在平均值的士0.5%范围内，取其平均值作为电阻的实际测量值。如绕组

的直流电阻在1S2以下时，应采用有效数不低于4位的双臂电桥测量。

4.2.2.3使用电压表电流表法测量时，接线原理如图1。图中R。为可调限流电阻，R为被试电机绕

组，V为电压表，A为电流表。图I(a)的接线适用于测量电压表内阻与被测电阻之比大于200时绕组

的电阻，图1(b)的接线适用于测量电压表内阻与被测电阻之比小于200时绕组的电阻。

试验时，所加电流不应超过绕组额定电流的1000，通电时间不超过1min,测量时应同时读取电流

及电压值，每一电阻至少应在三种不同电流值下进行测量，每个测量值与平均值相差应在士。.5%范围

之内，取其平均值作为电阻的实际测量值。

(a)(b)

图1

4.2.2.4测量电枢绕组时，电机的转子静止不动。绕组的各相各支路的始末端均引出时，应分别测量

各相各支路的直流电阻。

如果各相绕组在电机内部连接，那末就应在每个出线端间测量电阻，各相电阻值按下式计算:

对星形接法的绕组，如图2(a)

R}=R-一R_······························……(I)

R、二R-一R_······························……(2)

R,V=R-一R}······························……(3)

对三角形接法的绕组，如图2(b)

R,w·R-

R,，一+R一R-(4)

R-一R

R}·R}}

R、一+R*一Rm,A

Rm,}一R}w

R}}·R.w

K_+R,一‘RmP}(6)

R二一R}

GB/T1029-2005

式中:R、一(R-+R,+R,)/2,R,,,R,w和R-分别为出线端u与v,v与w和w与u之间测得的

电阻值(ED;

民,R。和R*分别为各相的相申Lm(n)

(a)(b)

图2

4.2.2.5励磁绕组的直流电阻应在绕组引至集电环的接线端或集电环表面测量，自励恒压发电机励磁

装置绕组的直流电阻应在绕组的出线端上单独进行测量。

4.3轴电压测定

被试电机应在额定电压、额定转速下空载运行。典型的测量示意图见图3，用高内阻交流电压表先

测定轴电压U,，然后将转轴没有绝缘的一端与其轴承座短接(双侧绝缘的转轴短接任意一侧)，测另一

端对轴承座的电压口2(即油膜电压)，再测该轴承座对地的电压U,测点表面与电压表引线应接触良

好。试验前应分别检查轴承座与金属垫片、金属垫片与金属底座之间的绝缘电阻。

4.4空载特性的测定

4.4.1发电机法

试验时将被试电机拖动到额定转速，电枢绕组开路，在他励方式下进行。

调节励磁电流，如无其他规定，应使空载电枢电压达到额定值的1.3倍或额定励磁电流所对应的电

压值作为空载特性的起始点。然后单方向逐步减小励磁电流到零，一般应量取7-9点(在额定电压值

附近多测几点).每点应读取三线电压，励磁电流、频率(或转速)。最后读取励磁电流为零时的剩磁

电压

如果三线电压对称.则除了在额定电压时读取三线电压外，其他各点可仅读取任一线电压值

1一轴承座

2—绝缘垫片;

3—金属垫片;

4—绝缘垫片;

5一转子。

图3

GB/T1029-2005

试验时频率f与额定频率f}有差异时，电枢空载电压按下式进行折算:

f".

L广们—一，丁L(7)

I

式中:

u试验时测得的空载电压(三相平均值),v;

从折算到额定频率时的空载电压，v,

关系曲线U=f(I,)即为所求的空载特性曲线。若空载特性试验中剩磁电压较高，则应对空载特

性曲线进行修正。修正方法为将特性曲线的直线部分延长与横轴相交，交点的横坐标绝对值△l,为修

正值，然后在所有试验测得的励磁电流数据上加上此值(Ail)，即可得到被修正的曲线。空载特性曲线

的直线部分及其延长线通常称为气隙线，见图4.

图4

4.4.2电动机法

被试电机接到额定频率、电压可调、实际对称的稳定电源上，使电机在他励方式下作空载运行。

调节电源电压，并相应调节被试电机的励磁电流，使电枢电流最小(此时电机的功率因数为1.0，按

二瓦计接法的两只功率表读数相等，方向相同)，这时对应的励磁电流即为该电压下的励磁电流.

如无其他规定，试验应从电枢额定电压的1.3倍开始，调节端电压及励磁电流，直至电机不致于失

步的最低电压时为止，在整个过程中读取7-9点，每点应读取外施电压、励磁电流和频率(或转速)。

如果三线电压对称，则除在额定电压时读取三线电压外，其他各点可仅读一线电压

若试验时的频率与额定频率有差异，则空载电枢电压按公式(7)进行修正。

4.4.3对于1000kVA以下的同步电机，在检查试验中可尽量取额定电压时的励磁电流。

4.5稳态短路特性的测定

4.5.1测定三相稳态短路特性时应用低阻抗导体在尽可能接近电枢绕组出线端处将线端可靠短接

试验时，电机应在他励方式下运行。

4.5.2发曳机法

试验时将被试电机拖动到额定转速，调节励磁电流，使电枢电流在l.2倍额定电流左右，同时读取

电枢电流和励磁电流。逐步减小励磁电流，使励磁电流降低至零为止，共读取5-7点，然后绘制短路特

性曲线IK=f(I,)。如果三相电流对称，则除了在额定电流时读取三线电流外，其他各点可仅读取一线

电流。

4.5.3电动机法(自减速法)

被试电机作空载电动机运行，切断电源后立即减少励磁电流到零并切断励磁电源，然后用事先准备

好的开关将电枢绕组三相同时短接

GB/T1029-2005

接通励磁电源，调节励磁电流使电枢电流为1.2倍额定值左右，同时读取电枢电流及励磁电流。逐

步减小励磁电流，在仪器仪表精度允许的范围内读取5-7点，若在一次自减速中所读取的试验数据不

够时，可重复上述操作直至取得足够的试验数据。然后绘制短路特性曲线I,;=了(10.

4.5.4对于1000kVA以下的同步电机，在检查试验时可仅读取额定电枢电流时的励磁电流。

4.6励磁机试验

励磁机试验按GB/T7409..,,GB/T10585和该类型电机规定的方法进行。

4.7超速试验

如无其他规定，超速试验允许在冷态下进行

超速试验前应仔细检查电机的装配质量，特别是转动部分的装配质量，防止转速升高时有杂物或零

件一飞出。

超速试验时应采取相应的安全防护措施.对被试电机的控制及对振动、转速和轴承温度等参数的测

量应采用远距离测量方法。

超速试验可根据具体情况选用电动机法(提高电源频率)或原动机拖动法。

在升速过程中，当电机达到额定转速时，应观察电机运转情况，确认无异常现象后，再以适当的加速

度提高转速.直至规定的转速。超速值及持续时间按GB755-200。中8.5或该类型电机标准规定的

方法进行

超速试验后应仔细检查电机的转动部分是否有损坏或产生有害的变形，紧固件是否松动以及其他

不允许的现象出现。转子绕组在试验后，必须满足耐电压试验的要求。

4.8隐极式发电机转子匝间短路试验

隐极式发电机转子匝间短路试验按1B/T8446规定的方法进行

4.9振动的测定

振动的测定按GB10068规定的方法进行

4.10密封状态检查和漏氢测定

试验方法按JB/T6227规定的方法进行

4.11匝间冲击耐电压试验

匝间冲击耐电压试验按JB/丁10098和JB/T9615.1JB/T9615.2规定的方法进行。

4.12短时升高电压试验

试验应在电机空载时进行，除下列规定外，试验的外施电压(电动机)或感应电压(发电机)为额定电

压的130%

对在额定励磁电流时的空载电压为额定电压130以上的电机，试验电压应等于额定励磁电流时

的空载电压。

若无其他有关标准或技术文件规定，试验时间为3min，但以下规定除外。

对在130yo额定电压下，空载电流超过额定电流的电机试验时间可缩短至1min。对强行励磁的励

磁机，在强行励磁时的电压如超过130%额定电压，则试验应在强行励磁时的极限电压下进行，试验时

间为1min,

提高试验电压至额定电压的130%时，允许同时提高频率或转速，但应不超过额定转速的115%或

超速试验中所规定的转速。容许提高的转速值应在各类型电机标准中规定

对磁路比较饱和的发电机，在转速增加至115%且励磁电流亦已增加至容许的限值时，如感应电压

值达不到所规定的试验电压，则试验允许在所能达到的最高电压下进行。

4.13工频耐电压试验

试验电压的频率为工频，电压波形应尽可能接近正弦波形在整个耐电压试验过程中，要做好必要

的安全防护措施，被试电机周围应有专人监护

GB/T1029-2005

4.13.1试验要求

4.13.1.1除非另有规定，工频耐电压试验应在电机静止状态下进行

4.13.1.2试验前应先测量绕组的绝缘电阻，如电机需要进行超速、偶然过电流、短时过转矩试验及短

路机械强度试验时，则工频耐电压试验应在这些试验后进行。型式试验时，工频耐电压试验应在温升试

验后立即进行

4.13.1.3当电枢绕组、辅助绕组各相或各支路始末端单独引出时，应分别进行试验。

4.13.1.4试验时被试绕组两端同时施加电压(对小型电机可在绕组一端施加电压)，此时，不参加试验

的其他绕组和埋置检温元件等均应与铁心或机壳作电气连接，机壳应接地。如果三相绕组的中性点不

易分开，三相绕组应同时施加电压。

4.13.1.5对于水冷电枢绕组试‘验在绕组通水的情况下进行时，此时汇水管应接地在不通水的情况

下进行时，但必须将绝缘引水管中的水吹干。

4.13.1.6试验变压器应有足够的容量，如被试电机绕组的电容C较大时，则试验变压器的额定容量

Sti(kVA)应大于下式计算值:

S、二2nfCUU,,X10'······························……(8)

式中: