AS 3947.7.2-1996

1 - AS 3947.7.2:1996 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - ANCILLARY EQUIPMENT - PROTECTIVE CONDUCTOR TERMINAL BLOCKS FOR ...
4 - PREFACE
7 - 1 General
7 - 1.1 Scope and obj ect
7 - 1.2 Normative references
8 - 2 Definitions
8 - 2.1 protective conductor terminal block
8 - 2.2 partially insulated protective conductor terminal block
8 - 2.3 PEN conductor
8 - 3 Classification
9 - 4 Characteristics
9 - 4.1 Summary of characteristics
9 - 4.2 Type of protective conductor terminal block
9 - 4.3 Rated and limiting values
9 - 5 Product information
9 - 5.1 Marking
10 - 6 Normal service, mounting and transport conditions
10 - 7 Constructional and performance requirements
10 - 7.1 Constructional requirements
11 - 7.2 Performance requirements
12 - 8 Tests
17 - Annex A - Maximum short-time withstand currents allocated to the rail profile

Specifies protective conductor terminal blocks with screw-type or screwless type clamping units primarily intended for industrial applications to form the electrical and mechanical connection between copper conductors and the fixing support and intended to be used in circuits of a rated voltage up to 1000 volt a.c., up to 1000 Hz and up to 1500 volt d.c. This Standard is identical with and has been reproduced from IEC 947-7-2:1995.

This section of IEC 947-7 applies to protective conductor terminal blocks with PE function up to 120 mm2 (250 MCM) and to protective conductor terminal blocks with PEN function equal to and above 10 mm2 (AWG 8) with screw-type or screwless-type clamping units, primarily intended for industrial applications.Protective conductor terminal blocks are used to form the electrical and mechanical connection between copper conductors and the fixing support.It is applicable to protective conductor terminal blocks for the connection of round copper conductors with and without special preparation having a cross-section between 0,2 mm2 and 120 mm2 (AWG 24 and 250 MCM) applied for up to 1 000 V a.c. circuits up to 1 000 Hz and up to 1 500 V d.c. circuits, most commonly in conjunction with terminal blocks according to IEC 947-7-1.This section does not apply to: special construction protective conductors terminal which form an integral part of equipment, being dealt with in the relevant product standard; protective conductor terminals requiring the fixing of special devices to the conductors before clamping them into the terminal, for example flat push-on connectors; protective conductor terminals requiring twisting of the conductors, for example those with twisted joints; protective conductor terminals providing direct contact to the conductors by means of edges or points penetrating the insulation; protective conductor terminals which are dealt with in other particular requirements.

First published as AS 3947.7.2-1996.