AS/NZS 3350.2.74:1996

1 - AS/NZS 3350.2.74:1996 SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - PARTICULAR REQUIREMENTS-PORTABLE IMMERSION HEATERS
4 - PREFACE
6 - CONTENTS
7 - 1 Scope
7 - 2 Definitions
8 - 3 General requirement
8 - 4 General conditions for the tests
8 - 5 Void
8 - 6 Classification
8 - 7 Marking and instructions
9 - 8 Protection against access to live parts
9 - 9 Starting of motor-operated appliances
9 - 10 Power input and current
9 - 11 Heating
9 - 12 Void
9 - 13 Leakage current and electric strength at operating temperature
9 - 14 Void
9 - 15 Moisture resistance
9 - 16 Leakage current and electric strength
10 - 17 Overload protection of tranformers and associated circuits
10 - 18 Endurance
10 - 19 Abnormal operation
10 - 20 Stability and mechanical hazards
10 - 21 Mechanical strength
10 - 22 Construction
11 - 23 Internal wiring
11 - 24 Components
11 - 25 Supply connection and external flexible cords
11 - 26 Terminals for external conductors
11 - 27 Provision for earthing
11 - 28 Screws and connections
11 - 29 Creepage distances, clearances and distances through insulation
11 - 30 Resistance to heat, fire and tracking
11 - 31 Resistance to rusting
11 - 32 Radiation, toxicity and similar hazards
13 - ANNEX ZZ - VARIATIONS BETWEEN THIS STANDARD AND IEC 335-2-74:1994

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 has been reproduced from IEC 335-2-74:1994.

This clause of part 1 is replaced by:This standard deals with the safety of portable immersion heaters for household and similar purposes, their rated voltage being not more than 250 V.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.So far as it is practicable, this standard deals with the common hazards presented by appliances which are encountered by all persons in and around the home.This standard does not in general take into account- the use of appliances by young children or infirm persons without supervision;- playing with the appliance by young children.NOTES1 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;- 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.2 This standard does not apply to:- appliances intended exclusively for industrial purposes;- 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);- aquarium heaters (IEC 335-2-55);- fixed immersion heaters (IEC 335-2-73);- heating elements incorporated in portable appliances such as appliances for heating liquids (IEC 335-2-15).

First published in Australia as AS C104-1937.
Redated 1938.
Redated 1939.
Second edition 1940.
Redated 1948.
Third edition 1960.
Revised and redesignated AS 3104-1975.
Second edition 1982.
Third edition 1987.
Fourth edition 1995.
First published in New Zealand as NZS 952-1952.
AS 3104-1995 and NZS 952-1952 jointly revised, amalgamated and redesiganted AS/NZS 3350.2.74:1996.