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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.
| Author | VDE |
|---|---|
| Editor | VDE |
| Document type | Standard |
| Format | Paper |
| Cancellation date | |
| Confirmation date | |
| expiration_de_validite | |
| ICS | 17.220.20 : Measurement of electrical and magnetic quantities
|
| Number of pages | 13 |
| Replace | DIN EN 61557-7 (1998-05) |
| Cross references | EN 61557-7 (2007-03), IDT |
| Weight(kg.) | 0.1221 |
| Year | 2008 |
| Document history | DIN EN 61557-7 (2008-02) |
| Country | Germany |
| Keyword | DIN EN 61557;EN 61557;EN 61557-7;61557 |