1 - AS 1284, Part 2-1973 ELECTRICITY METERS - PORTABLE ALTERNATING CURRENT ROTATING STANDARD WATTHOUR METERS
4 - PREFACE
5 - CONTENTS
7 - SECTION 1. SCOPE AND GENERAL
7 - 1.1 SCOPE.
7 - 1.2 REFERENCE STANDARDS.
7 - 1.2.1 Electrical Measurements.
7 - 1.2.2 Standard Reference Frequency.
7 - 1.2.3 Standard Reference Temperature.
7 - 1.3 DEFINITIONS.
7 - 1.3.1 Rotating Standard Watthour Meter and Components.
8 - 1.3.2 Electrical Characteristics.
8 - 1.3.3 Rated Values.
8 - 1.3.4 Percentage error of meter
8 - 1.3.5 Circuits.
8 - 1.3.6 Meter Ranges.
10 - SECTION 2. MECHANICAL REQUIREMENTS
10 - 2.1 GENERAL.
10 - 2.2 ADJUSTING DEVICES.
10 - 2.3 LEVELLING.
10 - 2.3.1 Level Indicator.
10 - 2.3.2 Meter Level Adjustment.
10 - 2.4 CASE.
10 - 2.5 SECURITY SEALING.
10 - 2.6 WINDOW.
10 - 2.7 TERMINALS.
11 - 2.8 REGISTER (COUNTING MECHANISM).
11 - 2.8.1 Register Scales.
11 - 2.8.2 Provision for Photoelectric Sensing.
11 - 2.8.3 Register Reset.
11 - 2.8.4 Register Lubrication.
12 - SECTION 3. ELECTRICAL REQUIREMENTS
12 - 3.1 HEATING.
12 - 3.2 SPEED OF ROTATION.
12 - 3.3 CURRENT AND VOLTAGE RANGES.
12 - 3.4 MINIMUM TORQUE.
12 - 3.5 BURDEN.
12 - 3.6 DIELECTRIC PROPERTIES.
12 - 3.6.1 General.
12 - 3.6.2 Insulation.
13 - 3.6.3 Impulse Level.
13 - 3.7 STARTING AND STOPPING.
14 - SECTION 4. MARKING
14 - 4.1 NAMEPLATE.
14 - 4.2 ADDITIONAL INFORMATION.
14 - 4.2.1 Multi-range Meters.
14 - 4.2.2 Diagram of Connections.
14 - 4.2.3 Manufacturer’s Test Certificate.
15 - SECTION 5. ACCURACY
15 - 5.1 TEST CONDITIONS.
15 - 5.2 LIMITS OF ERRORS.
17 - 5.3 EFFECT OF INFLUENCE QUANTITIES.
17 - 5.3.1 General.
17 - 5.3.2 Effect of Change of Ambient Temperature.
17 - 5.3.3 Effect of Tilt.
17 - 5.3.4 Effect of Change of Voltage.
17 - 5.3.5 Effect of Change of Frequency.
18 - 5.3.6 Effect of Magnetic Field of External Origin.
18 - 5.3.7 Effect of Current Coil Self-heating.
19 - 5.3.8 Effect of Voltage Coil Self-heating.
19 - 5.3.9 Effect of Harmonic Content in Current Waveform.
19 - 5.4 CREEP.
20 - 5.5 ADJUSTMENTS.
21 - APPENDIX A - DETERMINATION OF EFFEECT OF MAGNETIC FIELD EXTERNAL ORIGIN