NEN-EN-IEC 61557-7/A1
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
active, Most Current
| Organization: | NEN |
| Publication Date: | 1 November 2023 |
| Status: | active |
| Page Count: | 20 |
| ICS Code (Power transmission and distribution networks in general): | 29.240.01 |
| ICS Code (Measurement of electrical and magnetic quantities): | 17.220.20 |
| ICS Code (Electrical insulation in general): | 29.080.01 |
scope:
NOTE Common three-phase distribution systems are depicted in IEC 61010-1:2010, Annex I and IEC 61010-1:2010/AMD1:20
Document History
NEN-EN-IEC 61557-7/A1
November 1, 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
NOTE Common three-phase distribution systems are depicted in IEC 61010-1:2010, Annex I and IEC 61010-1:2010/AMD1:2016, Annex I.
June 1, 2022
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 7: Phase sequence
This part of IEC 61557 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be...
April 1, 2007
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 7: Phase sequence
This part of IEC 61557 specifies the requirements for measuring equipment applied to testing the phase sequence in three-phase distribution systems. Indication of the phase sequence may be...
April 1, 1997
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
Deals with measuring equipment applied to test the phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual and/or audible.