IEC 61557-7:1997
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence

Standard No.

IEC 61557-7:1997

Release Date

1997

Published By

International Electrotechnical Commission (IEC)

Status

Be replaced 2007-01

Replace By

IEC 61557-7:2007

Latest

IEC 61557-7:2019/AMD1:2023 CSV

Scope

Deals with measuring equipment applied to test the phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual and/or audible.

IEC 61557-7:1997 history

• 0000 IEC 61557-7:2019/AMD1:2023 CSV
• 1970 IEC 61557-7:2023 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
• 0000 IEC 61557-7:2019 RLV
• 2007 IEC 61557-7:2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence
• 1997 IEC 61557-7:1997 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence