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STN - Slovenské národní normy
Stránka 2840
STN EN 61557-4 (01.10.2001) Neplatné
Electrical safety in low voltage distribution systems up to 1 kV a.c. and 1,5 kV d.c.. Equipment for testing, measuring or monitoring of protective measures. Part 4: Resistance of earth connection and equipotential bonding
Dostupné prevedenie: Tlačené
STN EN 61557-4 (01.12.2007) Neplatné
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
Dostupné prevedenie: Tlačené
STN EN IEC 61557-4 (01.02.2022) Neplatné
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 4: Resistance of earth connection and equipotential bonding
Dostupné prevedenie: Tlačené
STN EN 61557-5 (01.10.2001) Neplatné
Electrical safety in low voltage distribution systems up to 1 kV a.c. and 1,5 kV d.c. Equipment for testing, measuring or monitoring of protective measures. Part 5: Resistance to earth
Dostupné prevedenie: Tlačené
STN EN 61557-5 (01.12.2007) Neplatné
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
Dostupné prevedenie: Tlačené
STN EN IEC 61557-5 (01.03.2022) Neplatné
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 5: Resistance to earth
Dostupné prevedenie: Tlačené
STN EN 61557-6 (01.12.2001) Neplatné
Electrical safety in low voltage distribution systems up to 1 kV a.c. and 1,5 kV d.c. Equipment for testing, measuring or monitoring of protective measures. Part 6: Residual current devices (RCD) in TT, TN and IT systems
Dostupné prevedenie: Tlačené
STN EN IEC 61557-6 (01.02.2022) Neplatné
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
Dostupné prevedenie: Tlačené
STN EN 61557-6 (01.06.2008) Neplatné
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
Dostupné prevedenie: Tlačené
STN EN 61557-7 (01.10.2001) Neplatné
Electrical safety in low voltage distribution systems up to 1 kV a.c. and 1,5 kV d.c. Equipment for testing, measuring or monitoring of protective measures. Part 7: Phase sequence
Dostupné prevedenie: Tlačené
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