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EN 61557-7:2007 Standard

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  Keywords:

#phase #part #apply #iec #equipment

  Directive

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

  Last Official Journal reference

Wednesday 13th of December 2023

  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

EN 61557-13:2011

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

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 mo...

EN 61558-2-3:2010

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

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-3: Particular requirements and tests for i...

EN 61558-2-9:2011

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

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-9: Particular requirements and tests for tr...

EN 61558-2-8:2010

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

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-8: Particular requirements and tests for t...

EN 61558-2-7:2007

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

Safety of power transformers, power supplies, reactors and similar products - Part 2-7: Particular requirements and tests for tran...

EN 61558-2-6:2009

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

Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular...

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