AS/NZS 3350.2.40:1997

1 - AS/NZS 3350.2.40:1997 SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - PARTICULAR REQUIREMENTS - ELECTRICAL HEAT PUMPS,
4 - PREFACE
7 - CONTENTS
9 - 1 Scope
10 - 2 Definitions
12 - 3 General requirement
12 - 4 General conditions for the tests
12 - 5 Void
12 - 6 Classification
13 - 7 Marking and instructions
15 - 8 Protection against access to live parts
15 - 9 Starting of motor-operated appliances
15 - 10 Power input and current
15 - 11 Heating
20 - 12 Void
20 - 13 Leakage current and electric strength at operating temperature
21 - 14 Void
21 - 15 Moisture resistance
22 - 16 Leakage current and electric strength
22 - 17 Overload protection of transformers and associated circuits
22 - 18 Endurance
22 - 19 Abnormal operation
29 - 20 Stability and mechanical hazards
29 - 21 Mechanical strength
29 - 22 Construction
32 - 23 Internal wiring
32 - 24 Components
33 - 25 Supply connection and external cords
33 - 26 Terminals for external conductors
33 - 27 Provision for earthing
33 - 28 Screws and connections
33 - 29 Creepage distances, clearances and distances through insulation
34 - 30 Resistance to heat, fire and tracking
35 - 31 Resistance to rusting
35 - 32 Radiation, toxicity and similar hazards
39 - Annexes
39 - Annex A - Normative references
39 - Annex D - Alternative requirements for protected motor units
39 - Annex F - Motors not isolated from the supply mains and having basic insulation not designed for the rated voltage of the applia
40 - Annex AA - Examples for operating temperatures of the appliance
41 - ANNEX ZZ - VARIATIONS BETWEEN THIS STANDARD AND IEC 335-2-40:1995

Specifies particular safety requirements for approval and test purposes. It is to be read in conjunction with AS/NZS 3350.1:1994. This Standard is technically equivalent to and reproduced from IEC 335-2-40:1995.

This clause of part 1 is replaced by:This part of IEC 335 applies to the safety of electric heat pumps, including sanitary hot water heat pumps, air- conditioners, and dehumidifiers incorporating sealed motor-compressors, their maximum rated voltages being not more than 250 V for single phase appliances and 600 V for all other appliances.Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard.The appliances referenced above may consist of one or more factory made assemblies. If provided in more than one assembly, the separate assemblies are to be used together, and the requirements are based on the use of matched assemblies.NOTES1 A definition of sealed motor-compressor is given in IEC 335-2-34.2 Requirements for refrigeration safety are covered by ISO 5149, and requirements for containers intended for storage of the heated water included in sanitary hot water heat pumps are, in addition. covered by IEC 335-2-21.3 For appliances using flammable refrigerants, additional requirements are under consideration.Supplementary heaters, or a provision for their separate installation, are within the scope of this standard, but only heaters which are designed as a part of the appliance package, the controls being incorporated in the appliance.NOTES4 Attention is drawn to the fact that for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary; for appliances intended to be used in tropical countries special requirements may be necessary; for appliances subjected to pressure, additional requirements may be necessary: in many countries additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities. In the case of appliances for permanent connection to the water supply system, all relevant requirements need to be observed.5 This standard does not apply to humidifiers intended for use with heating and cooling equipment (IEC 335-2-88); appliances designed exclusively for industrial processing; appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).

First published in Australia as AS C179-1970 Revised and redesignated AS 3179-1979.
Second edition 1982.
Third edition 1986.
Fourth edition 1989.
Jointly revised and designated AS/NZS 3179:1993.
Jointly revised and redesignated AS/NZS 3350.2.40:1997.