This standard specifies the terms and definitions, classification, main technical parameters and models, technical requirements, test methods, inspection rules and markings, packaging, transportation, and storage of tubular electric heating elements (hereinafter referred to as "elements") for daily use. This standard applies to components installed in household appliances with a rated voltage not exceeding 480 V and a single tube rated power not exceeding 6000 W. This standard does not apply to components specifically designed for industrial use-- Components operating in a vacuum or absolute pressure exceeding 1MPa are components operating in flammable and explosive environments. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T 1804-2000 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerances GB 4706.1-2005- Safety of Household and Similar Electrical Appliances - Part 1: General Requirements GB 4706.12-2006- Safety of Household and Similar Electrical Appliances - Special Requirements for Water Storage Water Heaters
GB 17196-1997- Safety Requirements for Flat Quick Connect Ends for Connecting Copper Conductors -
3 Terms and Definitions The following terms and definitions apply to this article Pieces. Daily use metal tube electric heating elements. Daily use metal tube electric heating elements are a type of heating element that uses a metal tube as the outer shell, an alloy electric heating wire as the heating element, and a dense magnesium oxide powder or similar insulation material as the insulation medium between the two, and is connected to the power supply through a lead out rod
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