5629-4 / 2020

0

هندسية

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اختبارات

0 ج.م.

IEC 61557-4/2019 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 Part 4: Resistance of earth connection and equipotential bonding

متبناه

غير الزامى

17.220.20 - 29.080.01 - 29.240.01