1 - AS 1966.3-1990 ELECTRIC ARC WELDING POWER SOURCES - PLASMA ARC CUTTING AND WELDING TYPES
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 Constant current (CC) plasma arc power source
6 - 1.4.2 Duty cycle
6 - 1.4.3 Input current
6 - 1 4.4 Load voltage
6 - 1.4.5 Power source terminals
6 - 1.4.6 Maximum output current
6 - 1.4.7 Maximum short-circuit input current
6 - 1.4.8 100-percent duty cycle output current
6 - 1.4.9 Open-circuit voltage
6 - 1.4.10 Power factor
6 - 1.4.11 Rated input current
6 - 1.4.12 Rated input voltage
6 - 1.4.13 Rated output current
6 - 1.4.14 Rating of plasma arc power source
7 - 1.4.15 Rectifier
7 - 1.4.16 Rectifier assembly
7 - 1.4.17 Rectifier stack
7 - 1.4.18 Transformer/ rectifier plasma arc power source
7 - 1.4.19 Welder
7 - 1.5 SAFETY REQUIREMENTS.
7 - 1.5.1 General.
7 - 1.5.2 Earthing facilities.
7 - 1.5.3 Double insulation.
7 - 1.6 SERVICE CONDITIONS.
7 - 1.7 RATING.
7 - 1.7.1 General.
7 - 1.7.2 Rated load voltage.
8 - SECTION 2. PERFORMANCE REQUIREMENTS
8 - 2.1 OPEN-CIRCUIT VOLTAGE.
8 - 2.2 MAXIMUM SHORT-CIRCUIT INPUT CURRENT.
8 - 2.3 TOLERANCE ON APPLIED INPUT VOLTAGE.
8 - 2.4 POWER FACTOR CORRECTION.
8 - 2.5 TEMPERATURE LIMITS.
8 - 2.5.1 General.
8 - 2.5.2 Windings.
9 - SECTION 3. DESIGN
9 - 3.1 GENERAL.
9 - 3.2 TRANSFORMERS.
9 - 3.3 RECTIFIERS.
9 - 3.4 OPERATOR CONTROLS.
9 - 3.5 INPUT AND OUTPUT TERMINALS.
9 - 3.6 IDENTIFICATION OF CONNECTIONS.
9 - 3.7 INDICATION AND ACCURACY OF LOAD CURRENT
10 - SECTION 4. MARKING
10 - 4.1 GENERAL.
10 - 4.2 INFORMATION TO BE MARKED ON PLASMA ARC POWER SOURCES
10 - 4.3 POWER FACTOR CORRECTION MARKINGS.
10 - 4.4 VERIFICATION OF MARKINGS.
11 - SECTION 5. TESTS
11 - 5.1 REQUIREMENTS FOR TESTS.
11 - 5.1.1 General.
11 - 5.1.2 Type tests.
11 - 5.1.3 Routine tests.
11 - 5.2 INSULATION RESISTANCE TEST.
11 - 5.3 HIGH VOLTAGE TEST.
11 - 5.4 TEST OF EARTHING CONNECTION.
11 - 5.4.1 Test procedure.
11 - 5.4.2 Criteria.
12 - 5.5 TEST FOR OPEN-CIRCUIT VOLTAGE.
12 - 5.6 TEMPERATURE-RISE TEST.
12 - 5.7 TEST FOR RATED INPUT CURRENT.
12 - 5.8 POWER FACTOR TEST.
12 - 5.9 EARTH LEAKAGE TEST.
12 - 5.10 TEST FOR MAXIMUM SHORT-CIRCUIT INPUT CURRENT
13 - 5.11 TEST FOR RATED OUTPUT CURRENT.
13 - 5.12 TEST OF POWER RECTIFIER ASSEMBLY
14 - APPENDIX A - METHOD FOR THE DETERMINATION OF TEMPERATURE RISE
14 - A1 SCOPE.
14 - A2 PRINCIPLE.
14 - A3 DEFINITIONS.
14 - A3.1 Temperature rise
14 - A3.2 Ambient temperature
14 - A4 TEST CONDITIONS.
14 - A5 DETERMINATION OF AMBIENT TEMPERATURE.
14 - A6 MEASUREMENT OF TEMPERATURE RISE.
14 - A6.1 General.
14 - A6.2 Resistance method.
15 - A6.3 Thermometer or thermocouple method.
15 - A7 PROCEDURE.
15 - A8 REPORT.
16 - APPENDIX B - RATED 100-PERCENT DUTY CYCLE OUTPUT CURRENT
16 - APPENDIX C - DETERMINATION OF POWER FACTOR
16 - C1 SCOPE.
16 - C2 APPLICATION.
16 - C3 PRINCIPLE.
16 - C4 APPARATUS.
16 - C5 PROCEDURE.
16 - C6 REPORT.