IEC 60947-7-2:2009
Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors

Standard No.

IEC 60947-7-2:2009

Release Date

2009

Published By

International Electrotechnical Commission (IEC)

Latest

IEC 60947-7-2:2009

Replace

IEC 17B/1655/FDIS:2009 IEC 60947-7-2:2002

Scope

This part of IEC 60947 specifies requirements for protective conductor terminal blocks with PE function up to 120 mm? (250 kcmil) and for protective conductor terminal blocks with PEN function equal to and above 10 mm? (AWG 8) with screw-type or screwless-type clamping units@ primarily intended for industrial applications.NOTE AWG is the abbreviation of ??American Wire Gage?? [Gage (US) = Gauge (UK)]kcmil = 1000 cmil1 cmil = 1 circular mil = surface of a circle having a diameter of 1 mil1 mil = 1/1000 inchProtective conductor terminal blocks are used to form the electrical and mechanical connection between copper conductors and the fixing support.lt is applicable to protective conductor terminal blocks for the connection of round copper conductors with or without special preparation having a cross-section between 0@2 mm? and 120 mm? (AWG 24 and 250 kcmil)@ intended to be used in circuits of a rated voltage not exceeding 1 000 V a.c. up to 1 000 Hz or 1 500 V d.c.@ most commonly in conjunction with terminal blocks according to IEC 60947-7-1.This standard may be used as guide for? protective conductor terminal blocks requiring the fixing of special devices to the conductors@ for example quick connect terminations or wrapped connections@ etc.;? protective conductor terminal blocks providing direct contact to the conductors by means of edges or points penetrating the insulation@ for example insulation displacement connections@ etc.Where applicable in this standard@ the term ??clamping unit?? has been used instead of the term ??terminal??. This is taken into account in case of reference to IEC 60947-1.

IEC 60947-7-2:2009 history

• 2009 IEC 60947-7-2:2009 Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors
• 2002 IEC 60947-7-2:2002 Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment; Protective conductor terminal blocks for copper conductors
• 1995 IEC 60947-7-2:1995 Low-voltage switchgear and controlgear - Part 7: Ancillary equipment - Section 2: Protective conductor terminal blocks for copper conductors