IEC 63129:2020 pdf download – Determination of inrush current characteristics of lighting products.
2 Normative references There are no normative references in this document. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1 bidirectional diode thyristor DIAC two-terminal thyristor having substantially the same switching behaviour in the first and third quadrants of the current-voltage characteristic [SOURCE: IEC 60050-521 :2002, 521 -04-66] 3.2 bidirectional triode thyristor TRIAC three-terminal thyristor having substantially the same switching behaviour in the first and third quadrants of the current-voltage characteristic [SOURCE: IEC 60050-521 :2002, 521 -04-67]
3.3 circuit-breaker mechanical switching device, capable of making, carrying and breaking currents under normal circuit conditions and also making, carrying for a specified duration and breaking currents under specified abnormal circuit conditions such as those of short circuit [SOURCE: IEC 60050-441 :2000, 441 -1 4-20] 3.4 control gear controlgear <for an electric light source> unit inserted between the power supply (IEV 1 51 -1 3-75) and at least one light source, which serves to supply the light source(s) with its (their) rated voltage or rated current, and which can consist of one or more separate components Note 1 to entry: The control gear can include means for igniting, dimming, correcting the power factor and suppressing radio interference, and further control functions. Note 2 to entry: The control gear consists of a power supply (IEV 1 51 -1 3-76) and a control unit. Note 3 to entry: The control gear can be partly or totally integrated in the light source. Note 4 to entry: The terms “control gear” and “controlgear” are interchangeable. In IEC standards, the term “controlgear” is commonly used. [SOURCE: IEC 60050-845:—, 845-28-048] 3.5 I inrush inrush current transient current associated with energizing of electrical apparatus or components EXAMPLE Lighting products, transformers, cables, reactors. [SOURCE: IEC 60050-448:1 995, 448-1 1 -30, modified – In the definition, “electrical apparatus or components” replaces “transformer, cables, reactors, etc.” now given as examples.] 3.6 t Hx inrush current pulse duration time period over which the value of the inrush current is larger than x % of the peak inrush current Note 1 to entry: See also Figure 1 . Note 2 to entry: Any RF noise should be disregarded. Note 3 to entry: By this definition, the inrush current pulse duration t H50 is the full width at half maximum (FWHM) of the current pulse. Note 4 to entry: In this document values of x = 1 0 and x = 50 are used.
5 General notes on measurements In this document the term DUT (device under test) is used for the lighting product for which the inrush current characteristics are determined according to the requirements of this document. Controlgear shall be operated at maximum power (1 00 % light output) and with actual loads or dummy loads as specified by the manufacturer. 6 Inrush current measurements For the measurements, a reference (line) inductance of L ref = 1 00 µH and a reference (short circuit) peak current I ref = 400 A are used that reflect the average situation in 230 V installations. The values are based on tests conducted by switch manufacturers that suggest that they represent an appropriate average value. When a different mains voltage is used, the reference line inductance value and the reference peak current value may need to be adjusted. Inrush current measurements could be done with one DUT and the result multiplied by the number of devices in the installation considered. However, this does not reflect the situation in installations as they can be typically found. When different devices are connected in different parts of the circuit, the characteristics of the inrush current as well as the resulting voltage drop in the line are different. Therefore, the reference values defined above are used to simulate the average situation. Measuring a number of k individual DUTs in one measurement setup is equivalent to using one DUT while adjusting the impedance by a factor of k. Therefore, in particular the latter approach – which is the default approach followed in this document – results in a characterization of the inrush current of k DUTs connected to the same network.