I.S. EN IEC 61557-7:2022
Current
The latest, up-to-date edition.
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 (IEC 61557-7:2019)
Hardcopy , PDF
English
07-06-2022
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Marking and operating instructions
6 Tests
Annex A (normative) Illustrations for mechanical tests
Annex B (informative) Phase sequence test
Bibliography
This part of IEC 61557 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems.
| Committee |
IEC/TC 85
|
| DocumentType |
Standard
|
| ISBN |
978-2-8322-7161-2
|
| Pages |
42
|
| ProductNote |
This standard also refers to IEC 60050-311:2001. The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document.
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| IEC 61557-7:2019 | Identical |
| EN IEC 61557-7:2022 | Equivalent |
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