| Publication CODE |
Title |
| IEC 61557-7:2019 (2019-07) |
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 |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
85.00 €
|
28. |
Description
IEC 61557-7:2019 is available as IEC 61557-7:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61557-7:2019 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be mechanical, visual and/or audible. This document does not apply to additional measurements for other quantities. It does not apply to monitoring relays. IEC 61557-7:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following changes with respect to the previous edition:
a) alignment of the structure with that of the whole IEC 61557 series;
b) updated requirements in 4.3 in accordance with new editions of IEC 61010-1 and IEC 61010-031;
c) the information on markings was extended;
d) the information on the operating instructions was extended;
e) complement to the information on the testing of leads;
f) test leads for insulated conductors were introduced;
g) Annex B was added with information on phase sequence tests and indications.
|
| Class |
C990
(IEC PUBLICATIONS IEC PUBLICATIONS)
|
| Committee |
TC 85
MEASURING EQUIPMENT FOR ELECTRICAL AND ELECTROMAGNETIC QUANTITIES
|
| Responsible |
Vinckx Luc
Diamant Building
Bd. A. Reyerslaan, 80
B-1030
BRUXELLES - BRUSSEL
Belgique
E-mail: luc.vinckx@ceb-bec.be
|
| BEC Approval |
2019-07-26 |
| ICS-Code (International Standards Classification) |
17.220.20
, 29.080.01
, 29.240.01
|
| NBN Status |
New |
|
| IEC publication date |
2019-07-26 |
| IEC stability date |
2025-12-31 |
| IEC file modification date |
2019-07-26 |
| IEC last modification date |
2019-07-26 |
|
