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    • 4. 发明公开
    • VERFAHREN UND VORRICHTUNG ZUM AUSBILDEN EINES GLIMMSCHUTZES
    • 方法和设备形成电晕防护
    • EP2907225A2
    • 2015-08-19
    • EP13821835.9
    • 2013-12-30
    • Siemens Aktiengesellschaft
    • GRIEM, HaraldLANG, SteffenPOHLMANN, FriedhelmSTAUBACH, Christian
    • H02K3/40H02K15/12
    • H02K15/105B05D1/02H02K3/40H02K15/12
    • The invention relates to a method for forming corona shielding (7) on a winding bar (4) for high-voltage machines (1), having end corona shielding (8) in a first section (9) and outer corona shielding (10) in a second section (11) that adjoins the first section (9), said method comprising the following steps: provision (S1) of a first composition, which comprises a carrier material and a first filler contained therein and having a first electrical resistance; provision (S1) of a second composition, which comprises the same carrier material and a second filler contained therein and having a second electrical resistance, wherein the first and second fillers contain an identical dopable semiconductor material, the doping of which determines the electrical resistance of the first and second fillers, and wherein the second resistance differs from the first resistance; application (S2) of the first composition in the first section (9) to form the end corona shielding (8); and application (S2) of the second composition in the second section (11) to form the outer corona shielding (10). The same carrier material and fillers having the same properties are used for both compositions, and therefore the corona shielding with the end corona shielding and the outer corona shielding can be formed in one go (one single production step). The invention also relates to a device (19) for forming corona shielding (7) on a winding bar (4) for high-voltage machines (1).
    • 10. 发明公开
    • TEILLEITERSCHLUSSPRÜFUNG VON STÄNDERSTÄBEN ELEKTRISCHER MASCHINEN
    • TEILLEITERSCHLUSSPRÜFUNGVONSTÄNDERSTÄBENELEKTRISCHER MASCHINEN
    • EP3014291A1
    • 2016-05-04
    • EP14772081.7
    • 2014-09-09
    • Siemens Aktiengesellschaft
    • STAUBACH, Christian
    • G01R31/02G01R31/08G01R31/11G01R31/12
    • G01R31/11G01R31/025G01R31/06G01R31/1272G01R31/34
    • The invention relates to a method and an apparatus (10) for checking a multiplicity of mutually insulated strands in a stator winding bar (1) of an electric machine. The method comprises injecting (100) a test signal (U1), determining (200) a first component of the test signal (U1), and comparing (300) at least the first component with a reference signal (Uref) in order to determine damage to insulation between individual strands of the multiplicity of strands. The apparatus (10) according to the invention comprises a signal source (12) and a measuring apparatus (14). The method according to the invention and the apparatus (10) according to the invention are particularly suitable for checking stator winding bars (1) as are used in a generator and/or an electric motor.
    • 本发明涉及一种用于检查电机的定子绕线棒(1)中的多个相互绝缘的绞线的方法和装置(10)。 该方法包括:(100)测试信号(U1),确定(200)测试信号(U1)的第一分量,并将至少第一分量与参考信号(Uref)进行比较(300),以确定 多股线的单股之间的绝缘损坏。 根据本发明的装置(10)包括信号源(12)和测量装置(14)。 根据本发明的方法和根据本发明的设备(10)特别适用于检查在发电机和/或电动机中使用的定子绕组杆(1)。