CEI EN 61557-9 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures Part 9: Equipment for insulation fault location in IT systems
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- Картотека зарубежных и международных стандартов
Comitato Elettrotecnico Italiano
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures Part 9: Equipment for insulation fault location in IT systems
N EN 61557-9
Annotation
This part of IEC 61557 specifies the requirements for the insulation fault location system (IFLS) which localizes insulation faults in any part of the system in unearthed IT a.c. systems and unearthed IT a.c. systems with galvanically connected d.c. circuits having nominal voltages up to 1 000 V a.c., as well as in unearthed IT d.c. systems with voltages up to 1 500 V d.c., independent of the measuring principle.
IT systems are described in IEC 60364-4-41 amongst other literature. Additional data for a selection of devices in other standards should be noted.
NOTE Further information on insulation fault location can be found in the following standards: IEC 60364-4-41:2005, 411.6, and IEC 60364-5-53:2001, 531.3.
Автоматический перевод:
Электробезопасность в распределительных системах низкого напряжения до 1 000 В a.c. и 1 500 В d.c. - Оборудование для испытания, измерения или контроля Части 9 защитных мероприятий: Оборудование для изоляции обвиняет место в IT-системах
Эта часть IEC 61557 определяет требования для системы места ошибки изоляции (IFLS), локализующей ошибки изоляции в любой части системы в незаземленном IT a.c. системы и раскопавшей IT a.c. системы с гальваническим образом связанными d.c. схемами, имеющими номинальные напряжения до 1 000 В a.c., а также в незаземленных системах It'd.c. с напряжениями до 1 500 В d.c., независимый от измеряющегося принципа.
