IEC TS 62271-304:2019 EN-FR d2a95eb8
High-voltage switchgear and controlgear - Part 304: Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution
现行
发布日期 :
2019-03-21
实施日期 :
IEC TR 62271-307:2015 EN-FR 93d7c607
High-voltage switchgear and controlgear - Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
REVISED
发布日期 :
2015-09-16
实施日期 :
IEC 61300-3-53:2020 RLV EN 560722c1
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-53: Examinations and measurements - Encircled angular flux (EAF) measurement method based on two-dimensional far field data from multimode waveguide (including fibre)
现行
发布日期 :
2020-12-15
实施日期 :