JIS C 9300:1999

Introduction1 Scope2 Normative references3 Definitions4 Environmental conditions5 Test conditions 5.1 Type tests 5.2 Routine tests 5.3 Classification of test conditions6 Protection against electric shock 6.1 Insulation 6.1.1 Clearances 6.1.2 Creepage distances 6.1.3 Insulation resistances 6.1.4 Dielectric strength 6.2 Protection against electric shock in normal service (direct contact) 6.2.1 Protection provided by the enclosure 6.2.2 Capacitors 6.2.3 Automatic discharge of input capacitors 6.3 Protection against electric shock in case of a fault condition (indirect contact) 6.3.1 Isolation of the input circuit and the welding circuit 6.3.2 Insulation between windings of the input circuit and the welding circuit 6.3.3 Internal conductors and connections 6.3.4 Movable coils and cores7 Thermal requirements 7.1 Heating test 7.1.1 Tolerances of the test parameters 7.1.2 Duration of the heating test 7.2 Temperature measurement 7.2.1 Surface temperature sensor 7.2.2 Resistance 7.2.3 Embedded temperature sensor 7.2.4 Determination of the ambient air temperature 7.2.5 Recording of temperature 7.3 Limits of temperature rise 7.3.1 Windings, commutators and slip-rings 7.3.2 External surfaces 7.4 Loading test 7.5 Commutators and slip-rings8 Abnormal operation 8.1 Stalled fan 8.2 Short circuit 8.3 Overload9 Thermal protection 9.1 Construction 9.2 Location 9.3 Operation 9.4 Resetting 9.5 Operating capacity 9.6 Indication10 Connection to the input supply 10.1 Supply voltage 10.2 Power supply 10.3 Means of connection 10.4 Input supply terminals 10.4.1 Marking of terminals 10.4.2 Continuity of the protective circuit 10.5 Cable anchorage 10.6 Inlet openings 10.7 Input supply on/off switching device 10.8 Supply cables 10.9 Supply coupling device (attachment plug)11 Output 11.1 Maximum no-load voltage (U [0][max]) 11.2 Type test values of the conventional load voltage 11.3 Mechanical switching devices used to adjust output 11.4 Welding output connections 11.4.1 Protection against unintentional contact 11.4.2 Location of socket outlets 11.4.3 Outlet openings 11.4.4 Marking 11.5 Power supply to external devices 11.6 Auxiliary power output 11.7 Arc striking voltage12 Control circuits13 Hazard reducing device14 Mechanical requirements 14.1 Enclosure 14.2 Impact resistance of handles, push buttons etc. 14.3 Handling means 14.4 Drop withstand 14.5 Tilting stability15 Rating plate 15.1 Description 15.2 Tolerances 15.3 Direction of rotation16 Adjustment of the output 16.1 Type of adjustment 16.2 Marking of the adjusting device 16.3 Indication of current or voltage control17 Instructions and markings 17.1 Instructions 17.2 MarkingsAnnex 1 (normative) Classification, ratings and characteristics 1 A.C. arc welding power source 2 Drooping characteristic rectifier type d.c. arc welding power source 3 Constant voltage characteristic consumable electrode type gas-shielded metal arc welding power source 4 Drooping characteristic engine-driven d.c. arc welding power sourceAnnex 2 (normative) Unbalanced load in case of a.c. TIG welding power sources 1 Introduction 2 Unbalanced load 3 Example for an unbalanced loadAnnex 3 (normative) Construction of input supply terminals 1 Size of terminals 2 Spacings between terminals 3 Connections at the terminals 4 Construction of the terminals 5 Fixing of the terminalsAnnex 4 (normative) Methods of a 10 Nm impact test 1 Pendulum impact hammer 2 Free fall weightAnnex 5 (normative) Classification of transient overvoltageAnnex 6 (informative) Summarization of specifications in IEC 60204-1 to be applied to type BAnnex 7 (informative) Examples of marking on rating plate

Specifies power resources for industrial and professional use of such a system that the power is fed from the a.c. power supply or the source is driven by an engine.

99 [20/02/1999]92 [01/03/1993]