Share by email

IEC 60947-7-4 Redline version

IEC 60947-7-4:2019 RLV
Low-voltage switchgear and controlgear - Part 7-4: Ancillary equipment - PCB terminal blocks for copper conductors
IEC 60947-7-4:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 60947-7-4:2019 specifies requirements for PCB terminal blocks primarily intended for industrial or similar use. Mounting and fixing on the printed circuit board is made by soldering, press-in or equivalent methods to provide electrical and mechanical connection between copper conductors and the printed circuit board. This document applies to PCB terminal blocks intended to connect copper conductors, with or without special preparation, having a cross-section between 0,08 mm2 and 300 mm2 (AWG 28-600 kcmil), intended to be used in circuits of a rated voltage not exceeding 1 000 V AC up to 1 000 Hz or 1 500 V DC. This second edition cancels and replaces the first edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) additional test for PCB terminal blocks with clamping units, where contact pressure is transmitted through insulating materials;
b) tightening torques for screws now given in Table 4 of this document (previously given in Table 4 of IEC 60947-1:2007); tightening torques added for an additional type of screw;
c) new criteria for verification of contact resistance introduced;
d) clarification in the description of the temperature-rise test (current-temperature derating); corrections in the test sequence according to Figure 4.
REDLINE VERSION
English

Technical committee

TC 121/SC 121A Low-voltage switchgear and controlgear

Category

Electromagnetic Compatibility
Publication typeInternational Standard
Publication date2019-01-18
Edition2.0
ICS

29.130.20

Stability date2027
ISBN number9782832264515
Pages107
File size1.97 MB
EditionDatePublicationEditionStatus
  • Achieve food security and promote sustainable agriculture

  • Achieve food security and promote sustainable agriculture

  • Ensure healthy lives and promote well-being for all

  • Ensure inclusive and equitable quality education

  • Ensure availability and sustainable management of water and sanitation for all

  • Promote inclusive and sustainable economic growth, full and productive employment and decent work for all

  • Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation

  • Make cities and human settlements inclusive, safe, resilient and sustainable

  • Ensure sustainable consumption and production patterns

  • Take urgent action to combat climate change and its impacts

  • Conserve and sustainably use ocean, sea and marine resources

  • Strengthen the means of implementation and revitalize the global partnership for sustainable development

See more

Related publications