Safety of power transformers, power supply units and similar devices - - Particular requirements for transformers for class III handlamps for tungsten filament lamps
Standards Australia
<toc>
<bookmarktable>
<bookmark index='0'>
<pageno>1</pageno>
<text>AS/NZS 61558.2.9:2003 SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR PRODUCTS - PARTICULAR REQUIREMENTS FOR...</text>
<bookmark index='1'>
<pageno>4</pageno>
<text>CONTENTS</text>
</bookmark>
<bookmark index='2'>
<pageno>5</pageno>
<text>FOREWORD</text>
</bookmark>
<bookmark index='3'>
<pageno>7</pageno>
<text>1 Scope</text>
</bookmark>
<bookmark index='4'>
<pageno>8</pageno>
<text>2 Normative references</text>
</bookmark>
<bookmark index='5'>
<pageno>8</pageno>
<text>3 Definitions</text>
</bookmark>
<bookmark index='6'>
<pageno>8</pageno>
<text>4 General requirements</text>
</bookmark>
<bookmark index='7'>
<pageno>8</pageno>
<text>5 General notes on tests</text>
</bookmark>
<bookmark index='8'>
<pageno>8</pageno>
<text>6 Ratings</text>
</bookmark>
<bookmark index='9'>
<pageno>8</pageno>
<text>7 Classification</text>
</bookmark>
<bookmark index='10'>
<pageno>9</pageno>
<text>8 Marking and other information</text>
</bookmark>
<bookmark index='11'>
<pageno>9</pageno>
<text>9 Protection against accessibility of hazardous live parts</text>
</bookmark>
<bookmark index='12'>
<pageno>10</pageno>
<text>10 Change of input voltage setting</text>
</bookmark>
<bookmark index='13'>
<pageno>10</pageno>
<text>11 Output voltage and output current under load</text>
</bookmark>
<bookmark index='14'>
<pageno>10</pageno>
<text>12 No-load output voltage</text>
</bookmark>
<bookmark index='15'>
<pageno>11</pageno>
<text>13 Short-circuit voltage</text>
</bookmark>
<bookmark index='16'>
<pageno>11</pageno>
<text>14 Heating</text>
</bookmark>
<bookmark index='17'>
<pageno>11</pageno>
<text>15 Short-circuit and overload protection</text>
</bookmark>
<bookmark index='18'>
<pageno>11</pageno>
<text>16 Mechanical strength</text>
</bookmark>
<bookmark index='19'>
<pageno>11</pageno>
<text>17 Protection against harmful ingress of dust, solid objects and moisture</text>
</bookmark>
<bookmark index='20'>
<pageno>11</pageno>
<text>18 Insulation resistance and dielectric strength</text>
</bookmark>
<bookmark index='21'>
<pageno>11</pageno>
<text>19 Construction</text>
</bookmark>
<bookmark index='22'>
<pageno>13</pageno>
<text>20 Components</text>
</bookmark>
<bookmark index='23'>
<pageno>13</pageno>
<text>21 Internal wiring</text>
</bookmark>
<bookmark index='24'>
<pageno>13</pageno>
<text>22 Supply connection and other external flexible cables or cords</text>
</bookmark>
<bookmark index='25'>
<pageno>14</pageno>
<text>23 Terminals for external conductors</text>
</bookmark>
<bookmark index='26'>
<pageno>14</pageno>
<text>24 Provision for protective earthing</text>
</bookmark>
<bookmark index='27'>
<pageno>14</pageno>
<text>25 Screws and connections</text>
</bookmark>
<bookmark index='28'>
<pageno>14</pageno>
<text>26 Creepage distances, clearances and distances through insulation</text>
</bookmark>
<bookmark index='29'>
<pageno>14</pageno>
<text>27 Resistance to heat, abnormal heat, fire, and tracking</text>
</bookmark>
<bookmark index='30'>
<pageno>14</pageno>
<text>28 Resistance to rusting</text>
</bookmark>
<bookmark index='31'>
<pageno>15</pageno>
<text>Annexes</text>
</bookmark>
<bookmark index='32'>
<pageno>16</pageno>
<text>Annex ZZ - Variations to IEC 61558-2-9:2002 for application in Australia and New Zealand</text>
</bookmark>
</bookmark>
</bookmarktable>
</toc>
Specifies general safety requirements for approval and test purposes for transformers for class III handlamps for tungsten filament lamps. This Standard is an adoption with national modifications and contains the full text of IEC 61558-2-9:2002.
Replacement:
This International Standard covers such aspects of safety as electrical, thermal and mechanical.
This Part 2-9 of IEC 61558 applies to stationary or portable single-phase air-cooled (natural or forced) associated safety isolating transformers for class III handlamps for tungsten filament lamps, having a rated supply voltage not exceeding 1 000 V a.c., a rated frequency not exceeding 500 Hz and a rated output not exceeding 10 kVA.
Transformers for class III handlamps for tungsten filament lamps
- have a no-load output voltage and a rated output voltage not exceeding 50 V a.c. or 120 V ripple-free d.c.;
- are used where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification;
- have a low variation between no-load and rated output voltage;
- have a limited output voltage.
This standard is applicable to dry-type transformers. The windings may be encapsulated or non-encapsulated.
NOTE 1 For transformers filled with liquid dielectric or pulverised material, such as sand, additional requirements are under consideration.
NOTE 2 Attention is drawn to the fact that
for transformers intended to be used in vehicles, on board ships and aircraft, additional requirements (from other applicable standards, national rules, etc.) may be necessary;
for transformers intended for use in tropical areas, measures to protect the enclosure and the components inside the enclosure against external influences like fungus, vermin and termites should also be considered;
in locations where special environmental conditions prevail, additional requirements (from other applicable standards, national rules, etc.) may be necessary.
This standard also applies to transformers incorporating electronic circuits. This standard does not apply to external circuits and their components intended to be connected to the input and output terminals or socket-outlets of the transformer.
| Document Type | Standard |
| Status | Current |
| Publisher | Standards Australia |
| Committee | EL-002 |
| Under Revision |
|
| Supersedes |
|
| Superseded By |
|
