Content

Abstract:
At the time of the article preparation, there were no certified methods of objective measurement of the inrush current of LED luminaries, as well as a standardized definition of the concept of inrush current of LED luminaries in our country. The authors have developed and practically tested on the method of measuring transient processes at the switching on moment of the lighting devices (LD), allowing objectively characterizing its inrush current. The method for measuring the transient characteristics at the switching on moment, allowing us to define objectively its inrush current, was suggested. The corresponding terms and definitions were presented. Transient processes observed in the LD at the moment of its switching on are systematized and described. The requirements for test equipment for inrush current measurements were presented. The order of tests and the sequence of evaluating their results were written. Analysis features of inrush current pulses and the determined accuracy of the proposed test methodology were shown. Particular attention is paid to the key element of the test setup, which ensures the activation of the start synchronizer unit at the moment of maximum values of the supply voltage. Such strict fixing of currently turning up moment allows us to minimize measurement errors and to ensure permissible reproducibility of results. It is concluded that after method certification and its inclusion in the list of recommendations for use as a standard document, it will become possible to identify the necessary parameters of LD inrush current pulses what is sufficient for the rational design of power supply systems for illumination installations (II). Thus, the today uncertain situation in the issue of measuring inrush currents will disappear. In addition, while maintaining uniformity in the approach, the technique will allow us to form statistics by real values of inrush currents in electrical systems of II supply on real objects and already on its basis to establish quality criteria for inrush currents values of certain types of II.
References:
1. Sibrikov Alexander V. and Kirichyok Andrei I. Application of Light Emitting Diodes for Illumination of Moscow and Operational Challenges// Light & Engineering, 2017, Vol. 25, #2, pp. 25–29. 2. Abramov A.V., Bogdanov A.A, Danilko A.V., Dmitriev P.B., Karev A.V., Stepanov A.V. Electrical characteristics of LD with LED light sources in turning on and requirements for protective devices mains [Elektricheskiye kharakteristiki OP so svetodiodnymi istochnikami sveta pri vklyuchenii i trebovaniya k ustroystvam zashchity seti elektropitaniya] // Semiconductor lighting fixtures [Poluprovodnikovaya Svetotekhnika], 2020, # 2, pp. 28–31. 3. Impact of LED Lighting on Electrical Networks / EN // White Paper // 998–2095–10–07–17AR0_EN. URL: https:// download. schneider – electric. com / files? p _ Doc _ Ref = 998–2095–10–15–14 the AR0_ to EN (reference date: 12.05. 2020). 4. ANSI C82.16–2015 American National Standard for Light Emitting Diode Drivers – Methods of Measurement. 5. Standard IEC61009–1–2014 “ Automatic switch, triggered by about a residual current, with built-in protection of over-current, household and similar purpose. Part1. General rules”. 6. Standard to IEC60269–1–2016 “ Safety locks fusible low-voltage. Part1. General Rules”. 7. IEC60898–1: 2015 / AMD1: 2019 Amendment 1 – Electrical accessories – Circuit-breakers for over-current protection for household and similar installations – Part 1: Circuit-breakers for AC operation. 8. An overview of circuit breakers, LED Driver input and inrush current, and how to load a circuit breaker with Inventronics LED Drivers. / Inventronics Circuit Breakers. URL: https: // www. inventronics – co. com / wp – content / uploads / 2018/04 / Circuit – Breaker – App – Note. pdf (reference date: 12.05. 2020).
Keywords
- lighting device
- light emitting diodes
- the inrush current
- the inrush current amplitude
- inrush current duration
- a current pulse
- the moment of switching
- transient moment of inclusion
- measuring installation
- synchronizer control unit
- Joule integral
- design of lighting systems
- electrical systems supply of lighting installations
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