17.220.20 Measurement of electrical and magnetic quantities

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 8: Insulation monitoring devices for IT systems

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 9: Equipment for insulation fault location in IT systems

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 9: Equipment for insulation fault location in IT systems (IEC 61557:2009)

Elektrodrošums zemsprieguma sadales sistēmās maiņstrāvai līdz 1000 V un līdzstrāvai līdz 1500 V. Aizsarglīdzekļu testēšanas, mērīšanas un pārraudzīšanas aparatūra. 10.daļa: Aizsarglīdzekļu testēšanas, mērīšanas un pārraudzīšanas kombinētās mērīšanas iekārtas (IEC 61557-10:2024)

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 1: General requirements

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 1: General requirements

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 12: Power metering and monitoring devices (PMD)

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 12: Power metering and monitoring devices (PMD)

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 12: Power metering and monitoring devices (PMD)

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 12: Power metering and monitoring devices (PMD)

Elektrodrošība zemsprieguma sadales sistēmās maiņstrāvai līdz 1000 V un līdzstrāvai līdz 1500 V. Aizsarglīdzekļu testēšanas, mērīšanas un pārraudzīšanas aparatūra. 13.daļa: Rokā turamas un ar rokām manipulējamas mērknaibles un sensori noplūdes strāvu mērīšanai elektriskajos sadales tīklos (IEC 61557-13:2023)

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 14: Equipment for testing the safety of electrical equipment of machinery