ITU-R M.1799
Sharing between the mobile service and the mobile-satellite service in the band 1 668.4-1 675 MHz
现行
发布日期 :
2008-03-01
实施日期 :
This recommended practice provides procedures to detect external discharges in form-wound bars and coils and complete stator windings of rotating machines operating in air with a rated line-to-line voltage greater than 2300 V at power frequency. The recommended practice is applicable to bars, coils, and complete stator windings. The recommended practice covers two inspection methods--the visual blackout test and the use of corona imaging instruments.