EN 61557-7:2007
Superseded
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
03-23-2007
06-07-2022
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Marking and operating instructions
5.1 Marking
5.2 Operating instructions
6 Tests
Annex A (normative) Illustrations for mechanical tests
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
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 mechanical, visual and/or audible. This part of IEC 61557 does not apply to ancillary measuring equipment for other quantities, for example voltage testers comprising an additional phase sequence indicator. It does not apply to monitoring relays. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a minor revision.
| Committee |
CLC/TC 85X
|
| DevelopmentNote |
To be used in conjunction with EN 61557-1. (05/2007)
|
| DocumentType |
Standard
|
| PublisherName |
European Committee for Standards - Electrical
|
| Status |
Superseded
|
| Standards | Relationship |
| OVE/ONORM EN 61557-7 : 2008 | Identical |
| IEC 61557-7:2007 | Identical |
| NBN EN 61557-7 : 2007 | Identical |
| NF EN 61557-7 : 2007 | Identical |
| NEN EN IEC 61557-7 : 2007 | Identical |
| I.S. EN 61557-7:2007 | Identical |
| PN EN 61557-7 : 2007 | Identical |
| VDE 0413-7 : 2008 | Identical |
| DIN EN 61557-7 : 2008 | Identical |
| BS EN 61557-7:2007 | Identical |
| CEI EN 61557-7 : 2008 | Identical |
| CEI EN 61557-7:2007 | Identical |
| UNE-EN 61557-7:2007 | Identical |
| BS EN 60534-9:2007 | Identical |