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BS EN 61557-8:1997
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Insulation monitoring devices for IT systems
18 стр.
Заменен
Печатная копияПечатное издание
130.03 £ (включая НДС 20%)
Разработчик:
Зарубежные/BSI
ICS:
17.220.20 Measurement. Including measuring instruments, instrument transformers / Измерения электрических и магнитных величин. Включая измерительные приборы, измерительные трансформаторы
Ключевые слова:
Electrical measuring instruments, Electrical protection equipment, Electrical safety, Safety devices, Low voltage, Low-voltage equipment, Electrical insulation, Computer networks, Data processing, Marking, Instructions for use, Type testing, Electrical testing, Electrical resistance, Resistance measurement, Impedance measurement, Electrical impedance, Response time, Rated voltage, Visual inspection (testing)