AS NZS 60335.2.96 pdf download

AS NZS 60335.2.96 pdf download.Household and similar electrical appliances—Safety
1 Scope
This clause of Part 1 is replaced by the following. This part of IEC 60335 deals with the safety of flexible sheet heating elements intended to be incorporated into floors and walls below 1 ,2 m and above 2,3 m and in ceilings, their rated voltage being not more than 250 V for single-phase installations and 480 V for other installations. Flexible sheet heating elements are converted into heating units that are incorporated in the building in accordance with the instructions after which the required level of protection against hazards is achieved. NOTE 1 01 Attention is drawn to the fact that – in many countries, different wiring rules apply; – for heating units intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary; – in many countries, additional requirements are specified by the national authorities for fire protection, the national authorities for building regulations, the national health authorities, the national authorities responsible for the protection of labour and similar authorities. NOTE 1 02 This standard does not apply to – heating units intended exclusively for industrial purposes; – heating units intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas); – blankets, pads, clothing and similar flexible heating appliances (IEC 60335-2-1 7); – foot warmers and heating mats (IEC 60335-2-81 ); – heated carpets and for heating units for room heating installed under removable floor coverings (IEC 60335-2-1 06); – flexible sheet heating elements incorporated in other appliances.
3 Terms and definitions
This clause of Part 1 is applicable except as follows. 3.1 Definitions relating to physical characteristics Replacement: 3.1 .9 normal operation operation of the heating unit after incorporation into the building in accordance with the instructions. Flexible sheet heating elements, the current of which can vary depending on the length of the flexible sheet heating elements and those that can supply other flexible sheet heating elements are loaded so that the current marked on the flexible sheet heating elements flows through the heating unit. Heating units for storage heating applications are charged for 75 % of the rated charging period. 3.1 .1 01 rated charging period longest uninterrupted charging period assigned to the heating unit by the manufacturer 3.2 Definitions relating to means of connection Replacement: 3.2.1 supply leads set of wires intended for connecting the appliance to fixed wiring 3.5 Definitions relating to types of appliances 3.5.4 Addition: Heating units are considered to be fixed appliances. 3.5.1 01 flexible sheet heating element heating element consisting of sheets of electrical insulation laminated with electrical resistance material, or a base material on which electrically insulated heating wires are fixed Note 1 to entry: This definition does not preclude other methods of combining the insulation and resistance materials. 3.5.1 02 heating unit flexible sheet heating element equipped with means of connection to the supply and with insulation surrounding live parts Note 1 to entry: The heating unit can be partly or completely prefabricated.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows. 5.2 Replacement: In general, eight samples are required for the tests. The tests of 13.3 and of Clauses 15 and 16 are carried out on one sample. The tests of 18.101 and of Clause 30 are carried out on one sample. The test of 21.102 is carried out on two samples. One of these samples is also used for the test of 22.101. The test of 22.103 is carried out on one sample. The remaining tests are carried out on the sixth sample. The other two samples are required for incorporating into the test arrangement to create the necessary thermal environment. NOTE 1 01 Additional samples can be necessary if tests have to be repeated. Nine samples of modular heating units are necessary for the tests of 1 1 .2.1 02. Additional samples are necessary if the tests of 1 8.1 02 are carried out. Additional samples can be necessary for testing different sizes of heating units. The test of 22.105 is carried out on the same sample as that used for the test of 13.2. Two samples of the additional layer of material, of sufficient size to cover the heating unit, are required if the test of 21.104 is carried out.