4 General Requirement: Appliances shall be constructed so that in normal use, they function safely so as to cause no danger to persons or surroundings, even in the event of carelessness that may occur in normal use.In general, this principle is achieved by fulfilling the relevant requirements specified in this standard and compliance is checked…
The statement of standard as below:The values specified above are doubled if all controls have an off position in all poles. They are also doubled if:– the appliance has no control other than a thermal cut-out; or– all thermostats, temperature limiters and energy regulators do not have an off position; or– the appliance has radio…
room temperature: ambient temperature specified in the general conditions for the tests.Note 1 to entry: The ambient temperature is specified in 5.7. This item comes from standard IEC 60335-1:2020 edition 6.0. In commented version (CMV) of the official standard IEC 60335-1:2020 edition 6.0 allows the user to identify the changes made to the previous edition…
protective electronic circuit: electronic circuit that prevents a hazardous situation under abnormal operating conditions.NOTE Parts of the circuit may also be used for functional purposes. With the advancement of technology, more and more electronic circuits are being used in household electrical products, and these electronic circuits are usually integrated on PCBs. They use microprocessor chips…
electronic circuit: circuit incorporating at least one electronic component. The standard references electronic circuits in clause 19.11, clause 19.11.1, and clause 22.5. These requirements are additional to those for electronic circuits. The standard recognizes that electronic circuits alone cannot provide adequate protection. Electronic circuits may be susceptible to interference and malfunction, or they may be…
electronic component: part in which conduction is achieved principally by electrons moving through a vacuum, gas or semiconductor.NOTE Neon indicators are not considered to be electronic components. Early vacuum tubes were components that allowed electrons to conduct in a vacuum and were the core components of old radios and televisions.Electrons move through specific gases, colliding…
user maintenance: any maintenance operation stated in the instructions for use, or marked on the appliance, that the user is intended to perform. Allowed user-executed operations, the operation guideline was given in user manual, and it could be showed in enclosure of appliance. Since it is a allowed user-executed operation, then additional protective method should…
visibly glowing heating element: heating element that is partly or completely visible from the outside of the appliance and has a temperature of at least 650 °C when the appliance has been operated under normal operation at rated power input until steady conditions have been established. The heating element needs to be able to emit…
off position: stable position of a switching device in which the circuit controlled by the switch is disconnected from its supply or, for electronic disconnection, the circuit is de-energized.NOTE The off position does not imply an all-pole disconnection. With reference to the content in the NOTE, both all-pole disconnection and single-pole disconnection are a stable…
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