Standard
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AS 1284.1-2004
[Current]Electricity metering, Part 1: General purpose induction watthour meters
Specifies safety and performance requirements for general purpose single-rate and multi-rate induction watthour meters with terminals arranged for bottom connection or with contact blades arranged for the meter to plug-in to a socket conforming to AS 1284.4.
Published: 03/06/2004
Pages: 31
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.3 Referenced documents
1.4 Definitions
1.5 Conditions for operation in service
2 Constructional requirements
2.1 General
2.2 Case and terminal cover
2.2.1 Mechanical strength
2.2.2 Ignitability and combustion propagation
2.2.3 Entry of objects, dust and moisture
2.2.3.1 Entry of sealing wire
2.2.3.2 Enclosure classification
2.2.3.3 Protection against corrosion by salty air
2.2.4 Visibility of internal parts
2.2.5 Fixing screws (bottom-connected meter)
2.3 Dimensions
2.4 Security sealing
2.5 Terminations (bottom-connected meters)
2.5.1 Terminals
2.5.2 Clearance and creepage distances
2.5.3 Protection against short-circuit
2.6 Disconnecting devices
2.7 Register
2.7.1 General
2.7.2 Multi-rate register
2.7.2.1 General
2.7.2.2 Arrangement and identification
2.7.2.3 Operation of changeover device
2.8 Rotor
2.8.1 Magnetic flotation
2.8.2 Disc clearances
2.8.3 Direction of rotation
2.8.4 Disc markings
3 Electrical requirements
3.1 Standard values
3.2 Standard voltage ratings
3.3 Standard current ratings (Ib–Imax)
3.4 Voltage and current circuit parameters
3.4.1 Burden of voltage circuit intended for operation from a voltage transformer
3.4.2 Burden of current circuit (CT-operated meter)
3.4.3 Power loss in register changeover device
3.5 Temperature limits
3.5.1 Temperature limits for electrical insulation
3.5.2 Temperature limits for terminals
3.5.3 Test conditions
3.6 Connection
3.7 Dielectric properties
3.7.1 General
3.7.2 Insulation of internal parts
3.7.3 Double insulation
3.7.4 Lightning-impulse withstand test
4 Performance requirements
4.1 Reference conditions
4.2 Limits of error
4.2.1 Meter constant
4.2.2 Register test
4.2.3 Load range errors
4.2.4 Interpretation of test results
4.3 Effect of influence quantities
4.3.1 General
4.3.2 Effect of change of ambient temperature
4.3.3 Effect of change of voltage
4.3.4 Effect of change of frequency
4.3.5 Effect of current waveform distortion
4.3.6 Effect of tilt
4.3.7 Effect of current coil self-heating
4.3.8 Effect of external magnetic field
4.3.9 Effect of reversed-phase sequence (three-element meter)
4.3.9.1 Balanced three-element driven
4.3.9.2 Single-element driven
4.3.10 Effect of alternative usage and phase reversal (two-element meter)
4.3.10.1 Balanced two-element driven
4.3.10.2 Single-element driven
4.3.11 Effect of register friction
4.3.12 Effect of short-time overcurrent
4.3.12.1 Physical effect
4.3.12.2 Effect on error
4.3.13 Effect of shock
4.3.14 Effect of high temperature
4.3.15 Effect of register changeover device
4.4 Starting
4.5 Running with no load
5 Marking
5.1 Nameplate
5.2 Durability of marking
5.3 Diagrams of connections
6 Determination of compliance
6.1 Type tests
6.2 Routine tests
Appendix A
Appendix B
Appendix C
C1 Scope
C2 Test apparatus
C3 Procedure
C4 Report
Appendix D
D1 Scope
D2 Principle
D3 Test apparatus
D4 Procedure
D5 Report
Appendix E
E1 Scope
E2 Principle
E3 Test apparatus
E4 Procedure
E4.1 Single-element meter
E4.2 Multi-element meter
E5 Report
Cited references in this standard
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