AS 1284.1-1991

1 - AS 1284.1-1991 ELECTRICITY METERING - GENERAL PURPOSE INDUCTION WATTHOUR METERS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 REFERENCED DOCUMENTS
6 - 1.4 DEFINITIONS
6 - 1.4.1 Definitions related to the meter
6 - 1.4.2 Definitions related to components
7 - 1.4.3 Characteristic terms
8 - 1.4.4 Rated values
8 - 1.4.5 Reference conditions
8 - 1.4.6 Tests
8 - 1.5 CONDITIONS FOR OPERATION IN SERVICE
9 - SECTION 2 CONSTRUCTIONAL REQUIREMENTS
9 - 2.1 GENERAL
9 - 2.2 ADJUSTING DEVICES
9 - 2.3 CASE AND TERMINAL COVER
9 - 2.3.1 Mechanical strength
9 - 2.3.2 Water absorption
9 - 2.3.3 Ignitability and combustion propagation
9 - 2.3.4 Entry of objects, dust and moisture
10 - 2.3.5 Visibility of internal parts
10 - 2.3.6 Fixing screws (bottom-connected meter)
10 - 2.4 DIMENSIONS
11 - 2.5 SECURITY SEALING
11 - 2.6 TERMINATIONS (BOTTOM-CONNECTED METERS)
11 - 2.6.1 Terminals
12 - 2.6.2 Clearance and creepage distances
12 - 2.6.3 Terminal layout or location
12 - 2.6.4 Protection against short-circuit
12 - 2.7 DISCONNECTING DEVICES
12 - 2.8 REGISTER
12 - 2.8.1 General
12 - 2.8.2 Pointer register
14 - 2.8.3 Digital register
14 - 2.8.4 Multi-rate register
14 - 2.9 ROTOR
14 - 2.9.1 Basic torque
14 - 2.9.2 Magnetic flotation
14 - 2.9.3 Disc clearances
14 - 2.9.4 Internal sighting strip
14 - 2.9.5 Direction of rotation
16 - 2.9.6 Disc markings
16 - 2.9.7 Photoelectric test facilities
17 - SECTION 3 ELECTRICAL REQUIREMENTS
17 - 3.1 STANDARD VALUES
17 - 3.2 STANDARD VOLTAGE RATINGS
17 - 3.3 STANDARD CURRENT RATINGS
17 - 3.4 VOLTAGE AND CURRENT CIRCUIT PARAMETERS
17 - 3.4.1 Burden of voltage circuit intended for operation from a voltage transformer
17 - 3.4.2 Burden of current circuit (CT-operated meter)
17 - 3.4.3 Power loss in register change-over device
17 - 3.5 TEMPERATURE LIMITS
17 - 3.5.1 Temperature limits for electrical insulation
17 - 3.5.2 Temperature limits for terminals
17 - 3.5.3 Test conditions
18 - 3.6 CONNECTION
20 - 3.7 DIELECTRIC PROPERTIES
20 - 3.7.1 General
20 - 3.7.2 Insulation of internal parts
20 - 3.7.3 Double insulation
20 - 3.7.4 Lightning-impulse withstand test
21 - SECTION 4 PERFORMANCE REQUIREMENTS
21 - 4.1 REFERENCE CONDITIONS
21 - 4.2 LIMITS OF ERROR
21 - 4.2.1 Meter constant
21 - 4.2.2 Register test
21 - 4.2.3 Load range errors
22 - 4.2.4 Interpretation of test results
22 - 4.3 EFFECT OF INFLUENCE QUANTITIES
22 - 4.3.1 General
22 - 4.3.2 Effect of change of ambient temperature
22 - 4.3.3 Effect of change of voltage
22 - 4.3.4 Effect of change of frequency
22 - 4.3.5 Effect of current waveform distortion
22 - 4.3.6 Effect of tilt
22 - 4.3.7 Effect of current coil self-heating
23 - 4.3.8 Effect of external magnetic field
23 - 4.3.9 Effect of reversed-phase sequence (three-element meter)
23 - 4.3.10 Effect of alternative usage and phase reversal (two-element meter)
23 - 4.3.11 Effect of register friction
23 - 4.3.12 Effect of short-time overcurrent
24 - 4.3.13 Effect of shock
24 - 4.3.14 Effect of high temperature
24 - 4.3.15 Effect of register change-over device
24 - 4.4 STARTING
24 - 4.5 RUNNING WITH NO LOAD
25 - 4.6 ADJUSTMENTS
25 - 4.6.1 Range of adjustments
25 - 4.6.2 Independence of adjustments
26 - SECTION 5 MARKING
26 - 5.1 NAMEPLATE
26 - 5.2 DURABILITY OF MARKING
26 - 5.3 DIAGRAMS OF CONNECTIONS
27 - SECTION 6 DETERMINATION OF COMPLIANCE
27 - 6.1 TYPE TESTS
27 - 6.2 ROUTINE TESTS
29 - APPENDIX A - INFORMATION TO BE SUPPLIED WITH ENQUIRY AND ORDER
29 - APPENDIX B - LIST OF REFERENCED DOCUMENTS
30 - APPENDIX C - NOISE LEVEL TESTING OF METERS
30 - C1 SCOPE
30 - C2 TEST APPARATUS
30 - C3 PROCEDURE
30 - C4 REPORT
30 - APPENDIX D - METHOD FOR THE DETERMINATION OF THE RESISTANCE OF CERTAIN COMPONENTS TO ULTRAVIOLET LIGHT
30 - D1 SCOPE
30 - D2 PRINCIPLE
30 - D3 TEST APPARATUS
30 - D4 PROCEDURE
30 - D5 REPORT
31 - APPENDIX E - METHOD FOR THE DETERMINATION OF THE EFFECT OF AN EXTERNAL MAGNETIC FIELD
31 - E1 SCOPE
31 - E2 PRINCIPLE
31 - E3 TEST APPARATUS
31 - E4 PROCEDURE
31 - E4.1 Single-element meter
31 - E4.2 Multi-element meter
31 - E5 REPORT
32 - INDEX

Specifies safety and performance requirements for general purpose single-rate and multi-rate induction watthour meters with terminals arranged for the bottom connection or with contact blades arranged for the meter to plug-in to a socket conforming to AS 1284.4. Supersedes requirements for two-rate meters previously specified in AS 1284.3 - 1973.

This Standard specifies requirements for general purpose single-rate and multi-rate induction watthour meters (hereinafter referred to as 'meters') for the measurement of 50 Hz a.c. electrical energy in domestic, industrial or commercial premises.The Standard specifies terminal arrangements and connections for bottom-connected meters, also contact blade arrangements and connections for single-element single-phase 2-wire plug-in meters by cross-reference to AS 1284.4.For transformer-operated meters, the standard specifies secondary registration (see Clause 2.8.1.2) and the applicability of an appropriate transformer ratio constant.NOTES:1. For voltage transformers and current transformers, see AS 1243 and AS 1675 respectively.2. In order to facilitate the specification and purchase of meters, the Standard lists information which should be supplied with enquiry and order (see Appendix A).

First published in part as AS C39-1927T.
Second edition 1942.
Revised and redesignated in part as AS C39.1-1963.
Revised and redesignated AS 1284.1-1973.
Second edition 1985.
AS C39.3 first published 1965.
Revised and redesignated AS 1284.3-1973.
AS 1284.1-1985 and part of AS 1284.3-1973 revised, amalgamated and issued as AS 1284.1-1991.