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AS 3439.1-1993 low-voltage switchgear and controlgear assemblies - type-tested and partially type-tested assemblies

Standard Number:  AS 3439.1-1993
Title:  low-voltage switchgear and controlgear assemblies - type-tested and partially type-tested assemblies
Language:  English
Publication Date:  1993/9/28
Execute Date:  1993/12/20
Adopted International Standard:  IEC 439-1-1992 Equivalent
Status:  Withdrawn
Publisher:  Australia Standards(AS)
Price:  
Number of Pages:136P.;A4  

Preface:   
Description:Specifies requirements for type-tested and partially type-tested low voltage switchgear and controlgear assemblies for rated voltages up to 1000 V a.c. at frequencies not exceeding 1000 Hz, or 1500 V d.c. Applies to assemblies intended for use with generation, transmission, distribution and conversion of electrical energy and the control of electrical energy consuming equipment. This Standard is technically equivalent to and has been reproduced from IEC 439-1-1992.  
Catalog:Document Contents
AS 3439.1-1993 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - TYPE-TESTED AND PARTIA...
PREFACE
CONTENTS
1 General
1.1 Scope and object
1.2 Normative references
2 Definitions
2.1 General
2.1.1 Low-voltage switchgear and control gear assembly (ASSEMBLY)
2.1.2 Main circuit (of an ASSEMBLY)
2.1.3 Auxiliary circuit (of an ASSEMBLY)
2.1.4 Busbar
2.1.5 Functional unit
2.1.6 Incoming unit
2.1.7 Outgoing unit
2.1.8 Functional group
2.1.9 Test situation
2.2 Constructional units of ASSEMBLIES
2.2.1 Section
2.2.2 Sub-section
2.2.3 Compartment
2.2.4 Barriered section or sub-section
2.2.5 Transport unit
2.2.6 Fixed part
2.2.7 Removable part
2.2.8 Withdrawable part
2.2.9 Connected position
2.2.10 Test position
2.2.11 Disconnected position (isolated position)
2.2.12 Removed position
2.3 External design of ASSEMBLIES
2.3.1 Open-type ASSEMBLY
2.3.2 Dead-front ASSEMBLY
2.3.3 Enclosed ASSEMBLY
2.3.4 Busbar trunking system (busway)
2.4 Structural parts of ASSEMBLI ES
2.4.1 Supporting structure
2.4.2 Mounting structure
2.4.3 Mounting panel
2.4.4 Mounting frame
2.4.5 Enclosure
2.4.6 Cover
2.4.7 Door
2.4.8 Removable cover
2.4.9 Cover plate
2.4.10 Partition
2.4.11 Barrier
2.4.12 Obstacle
2.4.13 Shutter
2.4.14 Cable entry
2.5 Conditions of installation of ASSEMBLIES
2.5.1 ASSEMBLY for indoor installation
2.5.2 ASSEMBLY for outdoor installation
2.5.3 Stationary ASSEMBLY
2.5.4 Movable ASSEMBLY
2.6 Protective measures with regard to electric shock
2.6.1 Live part
2.6.2 Exposed conductive part
2.6.3 Protective conductor (PE)
2.6.4 Neutral conductor (N)
2.6.5 PEN conductor
2.6.6 Fault current
2.6.7 Earth fault current
2.6.8 Protection against direct contact
2.6.9 Protection against indirect contact
2.7 Gangways within ASSEMBLIES
2.7.1 Operating gangway within an ASSEMBLY
2.7.2 Maintenance gangway within an ASSEMBLY
2.8 Electronic functions
2.8.1 Screening
2.9 Insulation co-ordination
2.9.1 Clearance
2.9.2 Isolating distance (of a pole of a mechanical switching device)
2.9.3 Creepage distance
2.9.4 Working voltage
2.9.5 Temporary overvoltage
2.9.6 Transient overvoltages
2.9.7 Impulse withstand voltage
2.9.8 Power-frequency withstand voltage
2.9.9 Pollution
2.9.10 Pollution degree (of environmental conditions)
2.9.11 Micro-environment (of a clearance or creepage distance)
2.9.12 Overvoltage category (of a circuit or within an electrical system)
2.9.13 Surge arrester
2.9.14 Co-ordination of insulation
2.9.15 Homogeneous (uniform) field
2.9.16 Inhomogeneous (non-uniform) field
2.9.17 Tracking
2.9.18 Comparative tracking index (CTI)
2.10 Short-circuit currents
2.10.1 Short-circuit current (Ic) (of a circuit of an ASSEMBLY)
2.10.2 Prospective short-circuit current (Icp) (of a circuit of an ASSEMBLY)
2.10.3 Cut-off current; Let-through current
3 Classification of ASSEMBLI ES
4 Electrical characteristics of ASSEMBLIES
4.1 Rated voltages
4.1.1 Rated operational voltage (of a circuit of an ASSEMBLY)
4.1.2 Rated insulation voltage (Ui) (of a circuit of an ASSEMBLY)
4.1.3 Rated impulse withstand voltage (Uimp) (of a circuit of an ASSEMBLY)
4.2 Rated current (of a circuit of an ASSEMBLY)
4.3 Rated short-time withstand current (Icw) (of a circuit of an ASSEMBLY)
4.4 Rated peak withstand current (Ipk) (of a circuit of an ASSEMBLY)
4.5 Rated conditional short-circuit current (Icc) (of a circuit of an ASSEMBLY)
4.6 Rated fused short-circuit current (Icf) (of a circuit of an ASSEMBLY)
4.7 Rated diversity factor
4.8 Rated frequency
5 Information to be given regarding the ASSEMBLY
5.1 Nameplates
5.2 Markings
5.3 Instructions for installation, operation and maintenance
6 Service conditions
6.1 Normal service conditions
6.1.1 Ambient air temperature
6.1.2 Atmospheric conditions
6.1.3 Altitude
6.2 Special service conditions
6.3 Conditions during transport, storage and erection
7 Design and construction
7.1 Mechanical design
7.1.1 General
7.1.2 Clearances, creepage distances and isolating distances
7.1.3 Terminals for external conductors
7.2 Enclosure and degree of protection
7.2.1 Degree of protection
7.2.2 Measures to take account of atmospheric humidity
7.3 Temperature rise
7.4 Protection against electric shock
7.4.1 Protection against both direct and indirect contact
7.4.2 Protection against direct contact
7.4.3 Protection against indirect contact
7.4.4 Discharging of electrical charges
7.4.5 Operating and maintenance gangways within ASSEMBLI ES
7.4.6 Requirements related to accessibility in service by authorized personnel
7.5 Short-circuit protection and short-circuit withstand strength
7.5.1 General
7.5.2 Information concerning the short-circuit withstand strength
7.5.3 Relationship between peak and r.m.s. values of short-circuit current
7.5.4 Co-ordination of short-circuit protective devices
7.5.5 Circuits within an ASSEMBLY
7.6 Switching devices and components installed in ASSEMBLIES
7.6.1 Selection of switching devices and components
7.6.2 Installation
7.6.3 Fixed parts
7.6.4 Removable parts and withdrawable parts
7.6.5 Identification
7.7 Internal separation of ASSEMBLIES by barriers or partitions
7.8 Electrical connections inside an ASSEMBLY: bars and insulated conductors
7.8.1 General
7.8.2 Dimensions and rating of busbars and insulated conductors
7.8.3 Wiring
7.9 Requirements for electronic equipment supply circuits
7.9.1 Input voltage variations
7.9.2 Overvoltages
7.9.3 Waveform
7.9.4 Temporary variations in voltage and frequency
7.10 Electromagnetic compatibility
7.10.1 ASSEMBLIES not incorporating electronic equipment
7.10.2 ASSEMBLIES incorporating electronic equipment
8 Test specifications
8.1 Classification of tests
8.1.1 Type tests
8.1.2 Routine tests
8.1.3 Testing of devices and self-contained components incorporated in the ASSEMBLY
8.2 Type tests
8.2.1 Verification of temperature-rise limits
8.2.2 Verification of dielectric properties
8.2.3 Verification of short-circuit withstand strength
8.2.4 Verification of the effectiveness of the protective circuit
8.2.5 Verification of clearances and creepage distances
8.2.6 Verificat ion of mechanical operation
8.2.7 Verification of degree of protection
8.2.8 Verification of the properties of insulating materials
8.3 Routine tests
8.3.1 Inspection of the ASSEMBLY including inspection of wiring and, if necessary, electr...
8.3.2 Dielectric test
8.3.3 Checking of protective measures and of the electrical continuity of the protective ...
8.3.4 Verification of insulation resistance
Annex A - Minimum and maximum cross-sections of copper conductors suitable for connection
Annex B - Method of calculating the cross-sectional area of protective conductors with re...
Annex C - Typical examples of ASSEMBLIES
Annex D - Typical arrangements of forms of separation by barriers or partitions
Annex E - Items subject to agreement between manufacturer and user
Annex F - Measurement of creepage distances and clearances
F.1 Basic principles
F.2 Use of ribs
Annex G - Correlation between the nominal voltage of the supply system and the rated impu...
Annex H - Bibliography
APPENDIX AA - LIST OF VARIATIONS BETWEEN THIS STANDARD AND IEC 439-1
APPENDIX BB - INFORMATION TO BE SUPPLIED BY THE PURCHASER WHEN PLACING ENQUIRY OR ORDER
BB1 GENERAL
BB2 CONCERNING THE INDIVIDUAL CIRCUITS
BB2.1 Information relating to the supply and load circuit
BB2.2 Information relating to equipment in the assembly
BB2.3 Information relating to cables and busbar trunking systems.
BB3 CONCERNING THE ASSEMBLY AS A WHOLE
BB4 INFORMATION RELATING TO SPECIAL SERVICE AND INSTALLATION CONDITIONS
BB5 INFORMATION RELATING TO TESTS
APPENDIX CC - TYPES OF SYSTEM EARTHING
CC1 SCOPE
CC2 TN SYSTEMS
CC3 TT SYSTEM
CC4 IT SYSTEM
APPENDIX DD - GUIDELINES FOR ASSEMBLIES INTENDED TO PROVIDE INCREASED SECURITY AGAINST TH...
DD1 INTRODUCTION
DD2 OBJECT
DD3 POSSIBLE CAUSES OF FAILURE
DD4 ARCING FAULT CONDITIONS
DD5 MINIMIZATION OF ARCING
DD6 MEANS OF ACHIEVEMENT
APPENDIX EE - INTERNAL ARCING- FAULT TESTS
EE1 INTRODUCTION
EE2 RELEVANCE OF TESTS
EE3 TESTS REQUIRED
EE4 PREPARATION FOR ARCING-FAULT TESTS
EE5 TEST PROCEDURE
EE5.1 General
EE5.2 Tests
EE6 SPECIAL TESTS
EE7 ASSESSMENT OF TEST RESULTS
EE8 TEST REPORTS
APPENDIX FF - SELECTION OF COMPONENTS
FF1 GENERAL
FF2 EXAMPLES OF FACTORS TO BE CONSIDERED
FF2.1 Effect on rated thermal current
FF2.2 Effect on rated short-circuit currents
APPENDIX GG - DIFFERENCES BETWEEN THIS STANDARD AND AS 1136.1-1988
GG1 INTRODUCTION
GG2 DIFFERENCES
APPENDIX HH - COMPARISON OF FORMS OF SEPARATION BETWEEN THIS STANDARD AND AS 1136.1-1988
  
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Tile in English:  low-voltage switchgear and controlgear assemblies - type-tested and partially type-tested assemblies

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