Detail of GB/T 4706.82-2024

Introduction of GB/T 4706.82-2024

GB/T 4706.82-2024 Safety of household and similar electrical appliances - Part 82: Particular requirements for flexible sheet heating elements for room heating 1 Scope This clause of Part 1 is replaced by the following. This document specifies the safety requirements for soft film heating elements for room heating. This document 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 101: Attention is drawn to the fact that ——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 102: 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 (GB/T 4706.8); ——foot warmers and heating mats (GB/T 4706.80); ——heated carpets and for heating units for room heating installed under removable floor coverings (GB/T 4706.108); ——flexible sheet heating elements incorporated in other appliances. 2 Normative references This clause of Part 1 is applicable except as follows. Addition: GB/T 2099.1-2021 Plugs and socket-outlets for household and similar purposes - Part 1: General requirements Note: There is no technical difference between the referenced content of GB/T 2099.1-2021 and the referenced content of IEC 60884-1:2013. ISO 3864-1 Graphical symbols - Safety colours and safety signs - Part 1: Design principles for safety signs and safety markings Note: GB/T 2893.1-2013, Graphical symbols - Safety colours and safety signs - Part 1: Design principles for safetry signs and safety markings (ISO 3864-1:2011, MOD) IEC 60364-7-701 Low-voltage electrical installations - Part 7-701: Requirements for special installations or locations - Locations containing a bath or shower Note: GB/T 16895.13-2022, Low-voltage electrical installations - Part 7-701: Requirements for special installations or locations - Locations containing a bath or shower (IEC 60364-7-701:2019, IDT) 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. 3.1.101 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. 3.5.101 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: This definition does not preclude other methods of combining the insulation and resistance materials. 3.5.102 heating unit flexible sheet heating element equipped with means of connection to the supply and with insulation surrounding live parts Note: The heating unit can be partly or completely prefabricated. 3.5.103 modular heating unit prefabricated assembly consisting of a heating unit and other materials to form a rigid construction for mounting on a ceiling 3.5.104 storage heating application use of heating units to heat thermal accumulating material Note: The heat is discharged naturally, the heat output being varied by adjusting the energy input. 3.6 Definitions relating to parts of an appliance 3.6.101 electrode conductive part incorporated in a flexible sheet heating element for supplying the heating material 4 General requirement This clause of Part 1 is applicable.

Contents of GB/T 4706.82-2024