IEC 61255-2014 pdf download.Household electric heating pads – Methods for measuring performance.
This International Standard applies to electric heating pads for household use.
This International Standard defines the main performance characteristics of electric heating pads and specifies methods for measuring these characteristics, for the information of users.
This International Standard does not specify values for performance characteristics.
NOTE This International Standard does not deal with safety requirements that are covered by IEC 60335-2-1 7.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 62301 :201 1 , Household electrical appliances – Measurement of standby power
ISO 2439, Polymeric materials, cellular flexible – Determination of hardness (indentation technique)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 heating pad
appliance comprising a flexible part having a heated area not exceeding 0,3 m 2 on each face and which is intended to heat part of the human body
Note 1 to entry: If the pad is constructed in a cylindrical or similar form, the limit for heated area is 0,6 m 2 .
3.2 flexible part
all layers of material forming the permanent enclosure of the appliance together with the heating element, thermostats and all other current-carrying parts contained within it
Note 1 to entry: The flexible part may be inside a detachable cover.
3.3 heated area
area of the flexible part enclosed within the outer perimeter of the heating element or electro-conductive textile
Note 1 to entry: The heated area includes a margin outside the perimeter that has a width equal to 0,5 times the average distance between adjacent runs of the heating element.
Note 2 to entry: The heated area includes the return length of the heating element if the average distance between this part and the adjacent heating element does not exceed the average distance between adjacent runs of the heating element.
4 Classification of heating pads
4.1 General
The classifications of the appliance are stated.
4.2 Means of temperature regulation
Heating pads are classified according to the means of temperature regulation:
– heating pad with a control having continuously variable settings;
– heating pad with a control having step settings.
4.3 Type of supply
Heating pads are classified according to the type of supply:
– heating pad for direct connection to the supply mains;
– extra low voltage heating pad.
NOTE An extra low voltage heating pad has a rated voltage not exceeding 24 V.
4.4 Application
Heating pads are classified according to their application:
– heating pad for dry application;
– heating pad for moist application including cosmetics.
4.5 Method of cleaning
Heating pads are classified according to the method of cleaning:
– washable by hand
– machine washable
– not washable
4.6 Period of use
Heating pads are classified according to the period of use:
– heating pads having a time-based operation
– heating pads for continuous use.IEC 61255 pdf download.