AS 3439.4-1995

1 - AS 3439.4-1995 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PARTICULAR REQUIREMENTS FOR ASSEMBLIES FOR CONSTRUCTION SI
4 - PREFACE
6 - CONTENTS
7 - 1 General
7 - 1.1 Scope
7 - 2 Definitions
10 - 3 Classification of ACS
10 - 4 Electrical characteristics of assemblies
10 - 5 Information to be given regarding the assembly for construction sites (ACS)
10 - 5.1 Nameplates
11 - 5.3 Instructions for instal lati on, operati on and mai ntenance
11 - 6 Service conditions
11 - 6.1 Normal servi ce condi ti ons
11 - 6.1.1 Ambi ent ai r temperature
11 - 6.1.2 Atmospheric condi ti ons
11 - 7 Design and construction
11 - 7.1 Mechani cal design
12 - 7.2 Enclosure and degree of protecti on
13 - 7.4 Protecti on agai nst el ectri c shock
14 - 7.5 Short-ci rcuit prot ection and short-ci rcuit wit hstand strength
15 - 7.6 Components i nstall ed in assembli es
15 - 7.7 Internal separat ion of assembl ies by barri ers or parti ti ons
15 - 7.9 Requi rements for electronic equi pment suppl y ci rcuits
15 - 8 Test specifications
15 - 8.1 Classif i cati on of tests
16 - 8.2 Type tests
20 - 9 Particul ar features of the various functional types of ACS
20 - 9.1 Incoming suppl y and meteri ng ACS
20 - 9.1.1 Incoming unit
21 - 9.1.2 Metering unit
21 - 9.1.3 Outgoing unit
21 - 9.2 Main distribution ACS
21 - 9.2.1 General arrangement
21 - 9.2.2 Incoming unit
21 - 9.2.3 Outgoing units
21 - 9.3 Distribution ACS
21 - 9.3.1 General arrangement
22 - 9.3.2 Incoming unit
22 - 9.3.3 Outgoing units
22 - 9.4 Transformer ACS
22 - 9.4.1 General arrangement
22 - 9.4.2 Incoming unit
22 - 9.4.3 LV/ELV unit
23 - 9.4.4 LV/LV units
23 - 9.5 Final distribution ACS
23 - 9.5.1 Incoming unit
23 - 9.5.2 Outgoing unit
24 - 9.6 Socket-outlet ACS
24 - 9.6.1 Incoming unit
24 - 9.6.2 Outgoing unit, LV or ELV
25 - APPENDIX F - INTERCONNECTION OF TYPES OF ACS: EXAMPLES
28 - APPENDIX AA - LIST OF VARIATIONS BETWEEN THIS STANDARD AND IEC 439-4

Applies to type-tested assemblies (TTA) intended for use on construction sites, i.e. temporary places of work to which the public do not generally have access and where building construction, installation, repairs, alterations or demolition of property (buildings) or civil engineering (public works) or excavations or where any other similar operations are carried out. These assemblies may be transportable (semi-fixed) or mobile. This Standard is technically equivalent to and reproduced from IEC 439-4:1990.

Replace the last three paragraphs by the following:This standard applies to type-tested assemblies (TTA) intended for use on construction sites, i.e. temporary places of work to which the public do not generally have access and where building construction, installation, repairs, alteration or demolition of property (buildings) or civil engineering (public works) or excavation or any other similar operations are carried out. These assemblies may be transportable (semi-fixed) or mobile.This standard does not apply to assemblies for use in the administrative centres of construction sites (offices, cloakrooms, assembly rooms, canteens, restaurants, dormitories, toilets, etc.).NOTE - As regards the transformers incorporated in an ACS, it should be noted that both the nominal primary voltage and the nominal secondary voltage must be within the limits specified in IEC 439-1 for this standard to be applicable.

First published as AS 3439.4-1995.