Need help?

EN 61557-7:2007 Standard

wave
Save  

  Keywords:

#phase #part #apply #iec #equipment

  Directive

Low voltage (LVD) Directive (2014/35/EU)

  Last Official Journal reference

Tuesday 22nd of July 2025

  Description:

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

  Purpose

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.

  Publication

Wednesday 20th of April 2016

  Related Standards

HD 60269-2:2013

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage fuses - Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial applic...

EN 60974-12:2011

Low voltage (LVD) Directive (2014/35/EU)

Arc welding equipment - Part 12: Coupling devices for welding cables

EN 60947-7-1:2009

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors

EN 60947-7-2:2009

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductor...

EN 60947-7-3:2009

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 7-3: Ancillary equipment - Safety requirements for fuse terminal blocks

EN 60947-8:2003

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machi...

  Stay up to date

CELAB is Notified Body No.2037 for the EMC Directive and Italian office of a Notified Body for the RED Directive.

CELAB performs voluntary inspection activities on technical construction files to check their contents.

CELAB can accomplish all the required tests in order to affix the CE-marking related to EMC, LVD, RED, MDD, machines and many others.

CLICK HERE TO GET TESTS AND INFO ON THE EN 61557-7:2007 STANDARD

  ACCESS

Search for a standard
GO

Register

Already a member?
Login

  OTHER APPLICATIONS

If you are interested in DO160 tests, you can give a try to our other free of charge software:
CE-Marking assistant, Version: 1.3.0