| Reference |
IEC 61557-7 ed2.0 withdrawn corrigendum |
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|
| Title |
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
|
| Publication date |
2007-01-29 |
Format, price
(Swiss francs)
and language |
 | 35.- |
| 17 pages |  | 35.- |
| 144 Kb |
|
| |
| Abstract |
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.
|
| Technical Committee |
85 - Measuring equipment for electrical and electromagnetic quantities
|
| ICS Codes |
| 17.220.20 |
Measurement of electrical and magnetic quantities
*Including measuring instruments, instrument transformers
*Electric energy meters in buildings, see 91.140.50
|
| 29.080.01 |
Electrical insulation in general
|
| 29.240.01 |
Power transmission and distribution networks in general
*Powerline telecommunications, see 33.040.60 |
|
| |
| Replaced by |
|
| Stability date |
2017 |
| |
| Work in progress |
| Project | Stage code | Forecast publication date |
|---|
| No project under development | - | - |
|
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