1 Scope
This clause of GB 4706.1-2005 is replaced by the following:
This part deals with the safety of electric room heaters for household and similar purposes, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances.
Note 1: Examples of appliances that are within the scope of this standard are:
— convector heaters;
— fan heaters;
— heaters for use in greenhouses.
— liquid-filled radiators;
— panel heaters;
— radiant heaters;
— tubular heaters;
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 the shops, in light industry and on farms, are within the scope of this standard.
As far as is practicable, this part deals with the common hazards presented by appliances which are encountered by all persons in and around the home. However, in general, it does not take into account:
— the use of appliances by young children or infirm persons without supervision;
— playing with the appliance by young children.
Note 2: 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;
— in many countries additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities;
— for appliances intended to be used in the presence of combustible dust, for example in barns or stables, additional requirements may be necessary.
Note 3: This standard does not apply to
— appliances intended exclusively for industrial purposes;
— appliances intended to be used where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas);
— heaters that are built into air conditioners (GB 4706.32);
— clothes dryers and towel rails (GB 4706.60);
1 Scope
2 Normative References
3 Definitions
4 General Requirement
5 General Conditions for the Tests
6 Classification
7 Marking and Instructions
8 Protection Against Access to Live Parts
9 Starting of Motor-operated Appliances
10 Power Input and Current
11 Heating
12 Void
13 Leakage Current and Electric Strength at Operating Temperature
14 Transient Overvoltages
15 Moisture Resistance
16 Leakage Current and Electric Strength
17 Overload Protection of Transformers and Associated Circuits
18 Endurance
19 Abnormal Operation
20 Stability and Mechanical Hazards
21 Mechanical Strength
22 Construction
23 Internal Wiring
24 Components
25 Supply Connection and External Flexible Cords
26 Terminals for External Conductors
27 Provision for Earthing
28 Screws and Connections
29 Clearances, Creepage Distances and Solid Insulation
30 Resistance to Heat and Fire
31 Resistance to Rusting
32 Radiation, Toxicity and Similar Hazards
Annexes
Bibliography
Figure 101 Examples of Immediate Surrounds of Air-outlet Grilles
Figure 102 Examples of the Immediate Surrounds of Fireguards
Table 101 Temperature Rises for Surfaces
