Số hiệu tiêu chuẩn
EN 61557-3
Tên tiêu chuẩn
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 3: Loop impedance (IEC 61557-3:1997)
Ngày phát hành
1997-03-00
Tiêu chuẩn tương đương
DIN EN 61557-3 (1998-05), IDT * BS EN 61557-3 (1997-07-15), IDT * NF C42-198-3 (1997-07-01), IDT * IEC 61557-3 (1997-02), IDT * SN EN 61557-3 (1997), IDT * SN EN 61557-3 (2007), IDT * OEVE EN 61557-3 (1997-04-16), IDT * PN-EN 61557-3 (2003-04-30), IDT * SS-EN 61557-3 (1998-02-27), IDT * UNE-EN 61557-3 (1998-09-24), IDT * TS EN 61557-3 (2002-04-19), IDT * STN EN 61557-3 (2001-10-01), IDT * CSN EN 61557-3 (1998-10-01), IDT * DS/EN 61557-3 (1998-01-09), IDT * NEN-EN-IEC 61557-3:1997 en (1997-04-01), IDT
Từ khóa
Control instruments * Definitions * Deviations * Direct current installations * Drift * Earth conductors * Electrical engineering * Electrical safety * Electromagnetic tests * Grids * Impedance measurement * Inscription * Installations for rated voltages * Instruments * Loop resistance * Low voltage mains * Low-voltage installations * Measurement * Measuring equipment * Measuring instruments * Operating instructions * Outer conductors * Protection * Protective measures * Resistance measurement * Resistors * Specification (approval) * Surveillance (approval) * Test equipment * Testing * Zero conductors * Nets * Network * Resistance * Variations