STM PDF
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 3: Loop impedance. CEI/IEC 61557-3:2007. Original standard IEC 61557-3-2007 in PDF full version. Additional info + preview on request
Document status: Replaced by St IEC 61557-3-2019
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 4: Resistance of earth connection and equipotential bonding. CEI/IEC 61557-4:2007. Original standard IEC 61557-4-2007 in PDF full version. Additional info + preview on request
Document status: Replaced by St IEC 61557-4-2019
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 5: Resistance to earth. CEI/IEC 61557-5:2007. Original standard IEC 61557-5-2007 in PDF full version. Additional info + preview on request
Document status: Replaced by St IEC 61557-5-2019
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 6: Effectiveness of residual current devices (RCD) in TT, TN and IT systems. Original standard IEC 61557-6-2007 in PDF full version. Additional info + preview on request
Document status: Replaced by St IEC 61557-6-2019
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 7: Phase sequence. CEI/IEC 61557-7:2007. Original standard IEC 61557-7-2007 in PDF full version. Additional info + preview on request
Document status: Replaced by St IEC 61557-7-2023
Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence. Original standard IEC 61557-7-2019 in PDF full version. Additional info + preview on request
Document status: Active